Room Temperature Highly Diastereoselective Zn-Mediated. Allylation of Chiral N-tert-Butanesulfinyl Imines: Remarkable Reaction Condition Controlled
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- Μνήμη Λύκος
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1 Supporting Information for: Room Temperature Highly Diastereoselective Zn-Mediated Allylation of Chiral N-tert-Butanesulfinyl Imines: Remarkable Reaction Condition Controlled Stereoselectivity Reversal Xing-Wen Sun, Ming-Hua Xu,* and Guo-Qiang Lin* Shanghai Institute of rganic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai , and Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai , China. Table of Contents 1. General Procedure for the Allylation of Chiral N-tert-Butanesulfinyl Aldimines in THF System.. S2 2. General Procedure for the Allylation of Chiral N-tert-Butanesulfinyl Aldimines in HMPA System.. S2 3. General Procedure for the Allylation of Chiral N-tert-Butanesulfinyl Ketimines in THF System. 4. Determination of the Diastereoselectivity / Enantiomeric Excess. 5. The Configuration Assignment. 6. The Influence of the Amount of H 2 in HMPA System.. S2 S3. S3. S3 S4. S4 7. Characterization Data of the btained Enantioenriched Homoallylic Amines.. S5 S14 8. Copies of NMR Spectra.. S15 S96 S1
2 1. General Procedure for the Allylation of Chiral N-tert-Butanesulfinyl Aldimines in THF System. R N S + Br 2.0eq Zn 1.1eq In(Tf)3 THF, rt, 10h R Under argon, to a suspension of actived zinc powder (32 mg, 0.5 mmol), In(Tf) 3 (154 mg, mmol) and (R)-N-tert-butanesulfinyl imines (0.25 mmol) in freshly distilled dry THF (5 ml) was added allyl bromide (0.04 ml, 0.5 mmol) at room temperature. The resultant mixture was then stirred at rt for 10 hours. The reaction was quenched with 5 ml of saturated aqueous NaCl. Extraction with ethyl acetate, dried over anhydrous Na 2 S 4. After concentrated, the residue was purified by flash column chromatography to afford the desired allylation product. 2. General Procedure for the Allylation of Chiral N-tert-Butanesulfinyl Aldimines in HMPA System. R N S + Br 2.0eq Zn H 2 HMPA, rt, 12h R Under argon, to a suspension of actived zinc powder (32 mg, 0.5 mmol), (R)-N-tert-butanesulfinyl imines (0.25 mmol) in dry HMPA (5 ml) was added 10µL of H 2 and allyl bromide (0.04 ml, 0.5 mmol) at room temperature. The resultant mixture was stirred at rt for 12 hours. The reaction was quenched with 5 ml of 1N aqueous HCl. The solution was extracted with ethyl acetate, washed with brine and dried over anhydrous Na 2 S 4. After concentrated, the residue was purified by flash column chromatography to afford the desired allylation product. [Caution]: HMPA is a suspected human carcinogen. 3. General Procedure for the Allylation of Chiral N-tert-Butanesulfinyl Ketimines in THF System. R N S + Br 3.0eq Zn 1.3eq In(Tf)3 THF, rt, 24h R Under argon, to a suspension of actived zinc powder (48 mg, 0.75 mmol), In(Tf) 3 (183 mg, mmol) and (R)-N-tert-butanesulfinyl imines (0.25 mmol) in freshly distilled dry THF (5 ml) was added allyl bromide (0.06 ml, 0.75 mmol) at room temperature. The resultant mixture was then stirred at rt for 24 hours. The S2
3 reaction was quenched with 5 ml of saturated aqueous NaCl. Extraction with ethyl acetate, dried over anhydrous Na 2 S 4. After concentrated, the residue was purified by flash column chromatography to afford the desired allylation product. 4. Determination of the Diastereoselectivity / Enantiomeric Excess. The diastereoselectivity of the allylation product was determined according to 1 H NMR of the crude materials. In the case of product 2a, the enantiomeric excess was further measured by chiral HPLC of its acetate derivative to ensure the accuracy. N S Zn Br conditions NHAc * 1) HCl, MeH 2) Ac 2, Et 3 N, CH 2 Cl 2 * 1a 2a HPLC: Daicel Chiralpak AD column, detected at 254 nm, eluent: n-hexane/iso-propanol 9:1. 1 H NMR (300 MHz, CDCl 3 ): δ 1.92 (s, 9H), 2.52 (t, 3H, J = 6.9 Hz), (m, 3H), (m, 1H), 6.52 (d, 1H, J = 7.5 Hz), (m, 5H) ppm; ESI-MS (m/z, %): (M + +H). 5. The Configuration Assignment The configuration of the allylation product was assigned by comparison with literature data for the free homoallylic amines: a) N S Br 2.0 eq. Zn 1.1eq In(Tf) 3 THF, rt, 10h R, S 1) HCl, MeH 2) 3N NaH NH 2 S [α] D , (C 1.5, CHCl 3 ) lit. [α] D , (C 2.0, CHCl 3 ) R Br NH eq. Zn 1) HCl, MeH H 2 HMPA, rt, 12h R, R 2) 3N NaH R [α] 20 D +42.8, (C 0.45, CHCl 3 ) Lit: Yanada, R.; Negoro, N.; kaniwa, M.; Ibuka, T.; Tetrahedron; 1999, 55, S3
4 b) N S Br 3.0 eq. Zn 1.3eq In(Tf) 3 1) HCl, MeH NH 2 rt, THF, 10h 2) 3N NaH R R, S [a] 24 D -42.3, (C 1.5, CH 2 Cl 2 ) lit. [a] 23 D -44.1, (C 0.86, CH 2 Cl 2 ) S Lit: Hua, D. H.; Miao, S. W.; Chen, J. S.; Iguchi, S. J. rg. Chem. 1991, 56, The Influence of the Amount of H 2 in HMPA System. N S Br Zn H HMPA, H 2, rt 1a 2a' entry a solvent b time (h) yield (%) c dr d 1 HMPA :74 2 HMPA + 5 µl H :97 3 HMPA + 10 µl H :99 4 HMPA + 15 µl H :98 5 HMPA + 20 µl H :98 6 HMPA + 25 µl H :97 7 HMPA + 50 µl H :97 8 HMPA µl H :98 a Reactions were carried out with 0.25 mmol of imine 1a, 0.5 mmol of Zn/allyl bromide, and H 2 (additive) in 5 ml of dry solvent at rt. b HMPA was first distilled under vacuum from CaH 2, then distilled from sodium carefully, see Purification of Laboratory Chemicals, 5th Edition, Elseiver, 2002, 428. c isolated yield. d determined by 1 H NMR of the crude materials. S4
5 7. Characterization Data of the btained Enantioenriched Homoallylic Amines. 2a [α] D (c 1.90, CHCl 3 ) ; 1 H NMR (400 MHz, CDCl 3 ): δ 1.19 (s, 9H), (m, 1H), (m, 1H), 3.69 (s, 1H), (ddd, 1H, J = 2.35, 5.47, 8.00 Hz), (m, 2H), (m, 1H), (m, 5H) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.51, 43.30, 55.53, 57.06, , , , , , ppm; FT-IR (film, cm -1 ) ν 3033, 2927, 2869, 2235, 1640, 1456, 1058, 911, 734, 701; ESI-MS (m/z, %): (M + +H), (M + +Na).; HRMS (EI) for C 14 H 21 NS: calcd , found a' [α] D (c 2.46, CHCl 3 ); 1 H NMR (300 MHz, CDCl 3 ): δ 1.22 (s, 9H), (m, 1H), (m, 1H), 3.52 (s, 1H), 4.45(d, 1H, J = 1.8 Hz), (m, 2H), (dt, 1H, J = 7.2, 24.3 Hz), (m, 5H) ppm; 13 C NMR (75 MHz, CDCl 3 ): δ 22.66, 41.23, 55.97, 58.52, , , , , , ppm; ESI-MS (m/z, %): (M + +H), 274(M + +Na). F 2b [α] D (c 1.52, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.19 (s, 9H), (m, 1H), (m, 1H), 3.69 (s, 1H), 4.45 (ddd, 1H, J = 1.89, 5.57, 7.81 Hz), (m, 2H), (m, 1H), 7.02 (t, 2H, J = 8.67Hz), 7.29 (dt, 2H, J = 2.09, 5.32 Hz) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.49, 43.32, 55.54, 56.33, , , , , , , , , , ppm; FT-IR (film, cm -1 ) ν 3428, 3206, 3078, 2959, 2937, 2870, 1641, 1605, 1511, 1058, 836, 795; ESI-MS (m/z, %): (M + +H), (M + +Na); HRMS (EI) for C 14 H 20 NS: calcd , found F 2b' [α] D (c 2.65, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.22 (s, 9H), (m, 1H), (m, 1H), 3.49 (d, 1H, J = 3.39 Hz ), 4.44 (dd, 1H, J = 5.99, 11.6 Hz), (m, 2H), (m, 1H), 7.03 (t, 2H, J = 8.6 Hz), 7.30 (dt, 2H, J = 2.87, 8.15 Hz) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.54, 41.22, 55.93, 57.89, , , , , , , , , , ppm; ESI-MS (m/z, %): (M + +H), (M + +Na). S5
6 Cl [α] D (c 2.30, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.19 (s, 9H), (m, 1H), (m, 1H), 3.67 (s, 1H), 4.45 (ddd, 1H, J = 2.04, 5.53, 7.86 Hz), (m, 2H), (m, 1H), (m, 5H) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.52, 43.22, 55.64, 55.41, , , , , , ppm; FT-IR (KBr, cm -1 ) ν 3201, 2c 3079, 2981, 2956, 2867, 1489, 1408, 1900, 827, 647; ESI-MS (m/z, %): (M + +H); HRMS (EI) for C 14 H 20 ClNS: calcd , found Cl 2c' (M + +H). [α] D (c 3.10, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.22 (s, 9H), (m, 1H), (m, 1H), 3.50 (d, 1H, J = 4.00 Hz), 4.43 (ddd, 1H, J = 0.63, 2.97, 8.9 Hz), (m, 2H), (m, 1H), (m, 4H) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.55, 41.13, 56.00, 57.91, , , , , , ppm; ESI-MS (m/z, %): Br 2d [α] D (c 2.75, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.19 (s, 9H), (m, 1H), (m, 1H), 3.68 (d, 1H, J = 1.22 Hz ), 4.43(ddd, 1H, J = 2.06, 5.55, 7.87 Hz), (m, 2H), (m, 1H), 7.20 (dd, 2H, J = 1.67, 6.63 Hz), 7.46 (dd, 2H, J = 1.86, 6.59 Hz) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.47, 43.11, 55.59, 55.43, , , , , , ppm; FT-IR (KBr, cm -1 ) ν 3198, 3077, 2923, 1643, 1484, 1055, 842, 779; ESI-MS (m/z, %): (M + +H); HRMS (EI) for C 14 H 20 BrNS: calcd , found Br 2d' [α] D (c 3.95, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ1.21 (s, 9H), (m, 1H), (m, 1H), 3.54 (d, 1H, J = 4.33 Hz), 4.41 (dd, 1H, J = 5.96, Hz), (m, 2H), (m, 1H), 7.21 (dd, 2H, J = 1.63, 6.69 Hz), 7.47 (dd, 2H, J = 1.88, 6.61 Hz) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.52, 41.05, 56.00, 57.96, , , , , , ppm; ESI-MS (m/z, %): (M + +H). Me 2e [α] D (c 1.38, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.19 (s, 9H), 2.34 (s, 3H), (m, 1H), (m, 1H), 3.66 (s, 1H), 4.43 (ddd, 1H, J = 2.16, 5.44, 7.9 Hz), (m, 2H), (m, 1H),7.14 (d, 2H, J = 7.9 Hz), 7.18 (d, 2H, J = 8.1 Hz) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ S6
7 21.09, 22.56, 43.41, 55.54, 56.81, , , , , , ppm; FT-IR (film, cm -1 ) ν 3204, 2976, 2863, 1643, 1053, 816; ESI-MS (m/z, %):266.2 (M + +H), 288.2(M + +Na); HRMS (EI) for C 15 H 23 NS: calcd , found Me 2e' [α] D (c 2.27, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.21 (s, 9H), 2.33 (s, 3H), (m, 1H), (m, 1H), 3.47 (d, 1H, J = 3.61 Hz), (m, 1H), (m, 2H), (m, 1H), 7.14 (d, 2H, J = 7.99 Hz), 7.21 (d, 2H, J = 8.1 Hz) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 21.02, 22.58, 41.10, 55.83, 58.24, , , , , , ppm; ESI-MS (m/z, %):266.2 (M + +H), (M + +Na). Me 2f [α] D (c 1.85, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.18 (s, 9H), (m, 2H), 3.65 (d, 1H, J = 1.19 Hz), 3.80 (s, 3H), 4.41 (ddd, 1H, J = 2.08, 5.58, 7.91 Hz), (m, 2H), (m, 1H), 6.87 (dd, 2H, J = 2.01, 6.7 Hz), 7.24 (dd, 2H, J = 2.01, 6.81 Hz) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.55, 43.38, 55.14, 55.46, 56.49, , , , , , ppm; FT-IR (KBr, cm -1 ) ν3450, 3283, 3216, 3076, 2958, 2869, 1612, 1514, 7247, 1056, 832; ESI-MS (m/z, %):282.2 (M + +H), 304.2(M + +Na); HRMS (EI) for C 15 H 23 N 2 S: calcd , found Me 2f ' [α] D (c 2.28, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.21 (s, 9H), (m, 1H), (m, 1H), 3.43 (d, 1H, J = 3.36 Hz), 3.79 (s, 3H), (m, 1H), (m, 2H), (m, 1H), (m, 2H), 7.25 (dd, 2H, J = 2.03, 6.71 Hz) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.60, 41.12, 55.19, 55.80, 57.94, , , , , , ppm. ESI-MS (m/z, %):282.2 (M + +H). Cl 2g [α] D (c 3.45, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.21 (s, 9H), (m, 1H), (m, 1H), 3.72 (d, 1H, J = 2.68 Hz), 5.01(ddd, 1H, J = 3.45, 5.15, 8.28 Hz), (m, 2H), (m, 1H), (m, 2H), (m, 2H) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.54, 42.37, 53.70, 55.80, , , , , , , , ppm; FT-IR (film, cm-1) ν 3219, 3073, 2924, 2866, 1640, 1573, 1474, 1440, 1364, 915, 754, 648; ESI-MS (m/z, %):286.2 (M + +H); HRMS (EI) for C 14 H 20 ClNS: calcd , found S7
8 Cl 2g' [α] D (c 2.35, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.21 (s, 9H), (m, 2H), 3.78 (d, 1H, J = 6.05 Hz), 4.92 (dd, 1H, J = 6.35, Hz), (m, 2H), (m, 1H), 7.22 (dd, 1H, J = 1.73, 7.52Hz), 7.27 (dd, 1H, J = 1.38, 7.83 Hz), 7.35 (dd, 1H, J = 1.32, 7.86Hz), 7.42 (dd, 1H, J = 1.55, 7.69 Hz) ppm; δ 13 C NMR (100 MHz, CDCl 3 ): δ 22.54, 40.23, 55.17, 56.29, , , , , , , , ppm; ESI-MS (m/z, %):286.2 (M + +H). Me 2h [α] D (c 2.20, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.19 (s, 9H), 2.40 (s, 3h), (m, 1H), (m, 1H), 3.67 (d, 1H, J = 1.46 Hz), 4.74 (ddd, 1H, J = 2.56, 5.48, 8.14 Hz), (m, 2H), (m, 1H), (m, 3H), (m, 1H) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 19.36, 22.54, 42.25, 52.62, 55.57, , , , , , , , ppm; FT-IR (film, cm -1 ) ν 3216, 3075, 2924, 2866, 1639, 1605, 1463, 1364, 1180, 1064, 911, 765, 727; ESI-MS (m/z, %): (M + +H), (M + +Na); HRMS (EI) for C 15 H 22 NNaS: calcd , found Me 2h' [α] D (c 1.98, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.21 (s, 9H), 2.38 (s, 3H), (m, 1H), (m, 1H), 3.44 (d, 1H, J = 2.85 Hz), (m, 1H), (m, 2H), (m, 1H), (m, 3h), 7.36 (d, 1H, J = 1.19 Hz) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 19.39, 22.58, 40.55, 53.60, 55.78, , , , , , , , ppm; ESI-MS (m/z, %): (M + +H). Br 2i [α] D (c 2.95, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.20 (s, 9H), (m, 1H), (m, 1H), 3.68 (s, 1H), 4.44 (ddd, 1H, J = 2.08, 5.38, 7.86 Hz), (m, 2H), (m, 1H), (m, 2H), 7.40 (dd, 1H, J = 1.89, 3.31 Hz), 7.48 (dd, 1H, J = 0.3, 1.86 Hz) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.52, 43.21, 55.74, 56.49, , , , , , , , ppm; FT-IR (film, cm -1 ) ν 3281, 3201, 3076, 2957, 2923, 2867, 1604, 1570, 1056, 996, 916, 784, 696; ESI-MS (m/z, %): (M + +H); HRMS (EI) for C 14 H 20 BrNS: calcd , found S8
9 Br 2i' [α] D (c 3.79, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.22 (s, 9H), (m, 1H), (m, 1H), 3.54 (d, 1H, J = 3.38 Hz), 4.41 (dd, 1H, J = 5.93, Hz), (m, 2H), (m, 1H), (m, 2h), (m, 1H), 7.47 (s, 1H) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.55, 41.11, 56.05, 57.99, , , , , , , ppm; ESI-MS (m/z, %): (M + +H). 2j [α] D (c 1.51, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.19 (s, 9H), (m, 1H), (m, 1H), 3.76 (d, 1H, J = 1.47 Hz), 4.64 (ddd, 1H, J = 2.01, 5.59, 7.88 Hz), (m, 2H), (m, 1H), (m, 3H), (m, 4H) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.51, 43.09, 55.53, 57.24, , , , , , , , , , , , ppm; FT-IR (KBr, cm-1) ν 3254, 3057, 2980, 2962, 2924, 2866, 1366, 1053, 925, 827, 756, 650, 598; ESI-MS (m/z, %): (M + +H), (M + +Na).; HRMS (EI) for C 18 H 23 NS: calcd , found j' [α] D (c 1.03, CHCl 3 ); 1 H NMR (500 MHz, CDCl 3 ): δ 1.22 (s, 9H), (m, 1H), (m, 1H), 3.63 (d, 1H, J = 3.73 Hz), 4.59 (m, 1H), (m, 2H), (m, 1H), (m, 3H), 7.77 (s, 1H), (m, 3H) ppm; 13 C NMR (125 MHz, CDCl 3 ): δ 22.59, 41.00, 55.97, 58.58, , , , , , , , , , , , ppm; ESI-MS (m/z, %): (M + +H), (M + +Na). 2k [α] D (c 0.45, CHCl 3 ); 1 H NMR (300 MHz, CDCl 3 ): δ (m, 1H), (m, 3H), (m, 1H), (m, 1H), 1.15 (s, 9H), (m, 3H), 3.35 (d, 1H, J = 3.0 Hz), (m, 2H), (m, 1H) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 4.21, 4.73, 16.08, 22.65, 41.29, 55.48, 58.77, , ppm; FT-IR (film, cm-1) ν 3223, 3078, 2979, 2924, 2668, 1641, 1473, 1363, 1060, 909, 822; ESI-MS (m/z, %): (M++H); HRMS (EI) for C 11 H 21 NS: calcd , found S9
10 2k' (c 1.55, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ (m, 1H), (m, 1H), (m, 2H), (m, 1H), 1.21 (s, 9H), (m, 2H), (m, 1H), 3.24 (d, 1H, J = 3.73 Hz), (m, 2H), (m, 1H) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 4.15, 4.68, 16.87, 22.60, 40.28, 55.61, 60.88, , ppm; ESI-MS (m/z, %): (M + +H). [α] D 26 2l (c 3.83, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ (m, 14H), (m, 1H), (m, 5H), (m, 2H), (m, 2H), (m, 2H), (m, 1H) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.70, 26.20, 26.24, 28.52, 29.05, 29.60, 37.14, 41.20, 55.88, 59.64, , ppm; FT-IR (film, cm-1) ν 3244, 3071, 3977, 2925, 2853, 1449, 1055, [α] D , 505; ESI-MS (m/z, %): (M++H); HRMS (EI) for C 14 H 27 NS: calcd , found l' (c 2.65, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ (m, 15H), (m, 1H), (m, 5H), (m, 2H), (m, 2H), (m, 2H), (m, 1H) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.66, 26.16, 26.18, 26.34, 28.81, 28.89, 37.12, 41.95, 55.96, 60.93, , ppm; ESI-MS (m/z, %): (M + +H). [α] D 26 2m [α] D (c 0.45, CHCl 3 ); 1 H NMR (500 MHz, CDCl 3 ): δ 0.92 (t, 3H, J = 7.41 Hz), 1.21 (s, 9H), (m, 2H), (m, 1H), (m, 1H), (m, 1H), (m, 1H), (d, 1H, J = 5.87 Hz), 3.24 (dt, 1H, J = 6.26, Hz), (m, 2H), (m, 1H) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 9.81, 22.68, 27.68, 39.88, 55.77, 56.05, , ppm; FT-IR (film, cm -1 ) ν 3236, 3076, 2958, 2927, 2871, 1640, 1457, 1364, 1055, 910; ESI-MS (m/z, %): (M + +H); HRMS (EI) for C 10 H 21 NS: calcd , found m' [α] D (c 1.61, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ.97 (t, 3H, J = 7.42 Hz), 1.21 (s, 9H), 1.62 (dt, 2H, J = 7.37, 13.97Hz), (m, 2H), 3.09 (d, 1H, J = 5.87 Hz), 3.24 (dt, 1H, J = 6.26, Hz), (m, 2H), (m, 1H) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 10.06, 22.64, 28.46, 39.29, 55.80, 57.30, , ppm;esi-ms (m/z, %): (M + +H). S10
11 [α] 26 D (c 1.56, CHCl 3 ); 1 H NMR (500 MHz, CDCl 3 ): δ 0.89 (d, 6H, J = Hz), 1.22 (s, 9H), (m, 1H), (m, 1H), (m, 1H), (m, 2H), (m, 2H), (m, 1H) ppm; 13 C NMR (125 MHz, CDCl 3 ): δ 17.82, 18.40, 31.01, 37.00, 55.94, 59.99, , ppm; FT-IR (film, cm -1 ) ν 3234, 2n 3076, 2956, 2926, 2871, 1640, 1465, 1389, 1056, 908; ESI-MS (m/z, %): (M + +H); HRMS (EI) for C 11 H 23 NS: calcd , found n' [α] D (c 1.15, CHCl 3 ) ; 1 H NMR (500 MHz, CDCl 3 ): δ 0.96 (dd, 6H, J = 6.85, Hz), 1.21(s, 9H), (m, 1H), (m, 2H), (m, 2H), (m, 2H), (m, 1H) ppm; 13 C NMR (125 MHz, CDCl 3 ): δ 18.13, 18.34, 31.87, 36.88, 56.04, 61.40, , ppm; ESI-MS (m/z, %): (M + +H). 2o [α] D (c 3.95, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.23 (s, 9H), (m, 2H), (m, 2H), (m, 2H), 3.30 (d. 1H, J = 6.48Hz), 3.36 (dt, 1H, J = 5.86, Hz), (m, 2H), (m, 1H), (m, 3H), (m, 2H) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.66, 31.81, 36.86, 40.41, 54.60, 55.84, , , , , , ppm; FT-IR (film, cm -1 ) ν 3215, 3063, 3026, 2856, 1673, 1640, 1455, 1363, 1054, 911, 745, 699; ESI-MS (m/z, %): (M + +H); HRMS (EI) for C 16 H 25 NS: calcd , found o' [α] D (c 2.75, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.19 (s, 9H), m, 2H), 2.33 (dd, 2H, J = 6.15, 6.92 Hz), (m, 2H), 3.16 (d, 1H, J = 6.08 Hz), 3.35 (dt, 1H, J = 6.17, Hz), (m, 2H), (m, 1H), (m, 3H), 7.28 (dd, 2H, J = 1.82, 7.31 Hz) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.58, 31.85, 37.04, 40.02, 55.47, 55.78, , , , , , ppm; ESI-MS (m/z, %): (M + +H). 2p [α] D (c 1.75, CHCl 3 ); 1 H NMR (300 MHz, CDCl 3 ): δ 1.21 (s, 9H), (m, 2H), 3.34 (d, 1H, J = 5.4 Hz), 4.02 (dt, 1H, J = 6.9, 12.9 Hz), (m, 2H), (m, 1H), 6.20 (dd, 1H, J = 7.2, 15.9 Hz), 6.60 (d, 1H, J = 16.2 Hz), (m, 5H) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.63, 41.29, 55.55, 55.87, , , , , , S11
12 132.36, , ppm; FT-IR (KBr, cm-1) ν 3199, 3073, 2976, 2867, 1640, 1053, 964, 910, ; ESI-MS (m/z, %): (M + +H); HRMS (EI) for C 16 H 23 NS: calcd , found p' [α] D (c 2.55, CHCl 3 ); 1 H NMR (300 MHz, CDCl 3 ): δ 1.22 (s, 9H), (m, 2H), 3.49 (d, 1H, 2.1 Hz), 4.07 (dd, 1H, J = 7.5, 15.0Hz), (m, 2H), (m, 1H), 6.02 (dd, 1H, J = 7.8, 15.9 Hz), 6.61 (d, 1H, J = 15.9 Hz), (m, 5H) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.55, 40.11, 55.88, 57.31, , , , , , , , ppm; ESI-MS (m/z, %): (M + +H). 4a [α] D (c 3.15, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.24 (s, 9H), 1.77 (s, 3H), 2.05 (s, 1H), 2.69 (d, 2H, J = 7.35 Hz), 3.77 (s, 1H), (m, 2H), (m, 1H), (m, 1H), 7.34 (dd, 2H, J = 6.45, 7.89 Hz), 7.44 (dd, 2H, 0.66, 7.9 Hz) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.81, 27.77, 49.04, 56.20, 59.93, , , , , , ppm; FT-IR (film, cm -1 ) ν 3215, 3066, 2977, 2926, 2854, 1447, 1378, 1268, 1070, 913, 763, 700, 663; ESI-MS (m/z, %): (M + +H); HRMS (EI) for C 15 H 23 NS: calcd , found Me 4b [α] D (c 1.70, CHCl 3 ); 1 H NMR (300 MHz, CDCl 3 ): δ 1.22 (s, 9H), 1.75 (s, 3H), 2.34 (s, 3H), 2.66 (d, 2H, J = 7.3 Hz), 3.74(s, 1H), (m, 2H), (m, 1H), 7.15 (d, 2H, J = 7.8 Hz), 7.19 (d, 2H, J = 8.1 Hz) ppm; 13 C NMR (75 MHz, CDCl 3 ): δ 20.90, 22.81, 27.80, 30.13, 49.08, 56.13, 59.73, , , , , , ppm; FT-IR (film, cm -1 ) ν 2977, 2955, 2923, 2867, 1455, 1069, 935, 915, 817, 653; ESI-MS (m/z, %): (M + +H); HRMS (EI) for C 16 H 25 NS: calcd , found F 3 C 4c [α] D (c 3.15, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.24 (s, 9H), 1.80 (s, 3H), 2.69 (d, 2H, J = 7.35 Hz), 3.82 (s, 1H), (m, 2H), (m, 1H), 7.59 (dd, 4H, J = 8.57, Hz) ppm 13 C NMR (100 MHz, CDCl 3 ): δ 22.76, 27.68, 29.64, 48.94, 56.40, 59.91, , , , , , , , , ppm; FT-IR (film, cm -1 ) ν 2979, 2868, 1411, 1328, 1167, 1124, 1070, 1015, 841, 600; ESI-MS (m/z, %): (M + +H), 356.2(M + +Na); HRMS (EI) for C 16 H 22 F 3 NNaS: calcd , found S12
13 Me 4d [α] D (c 1.03, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.21 (s, 9H), 1.74 (s, 3H), 2.65 (d, 1H, J =7.35 Hz), 3.70 (s, 1H), 3.80 (d, 3H, J = 2.19 Hz), (m, 2.0 Hz), (m, 1H), (m, 2H), 7.35 (dd, 2H, J = 2.16, 6.82 Hz) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.85, , 49.24, 55.21, 56.16, 59.60, , , , , , ppm; FT-IR (film, cm -1 ) ν 2926, 2854, 1611, 1513, 1378, 1251, 1182, 1070, 1036, 830, 668; ESI-MS (m/z, %): (M + +H); HRMS (EI) for C 16 H 25 N 2 S: calcd , found Cl 4e [α] D (c 2.55, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.22 (s, 9H), 1.76 (s, 3H), 2.04 (s, 1H), 2.64( d, 2H, J = 7.29Hz), 3.73 (s, 1H), (m, 2H), (m, 1H), (m, 4H) ppm 13 C NMR (100 MHz, CDCl 3 ): δ 22.77, 27.66, 49.04, 56.27, 59.66, , , , , , ppm; FT-IR (film, cm -1 ) ν 3286, 3219, 3076, 2978, 2926, 2867, 1636, 1492, 1095, 1058, 1012, 828, 752, 609; ESI-MS (m/z, %): (M + +H), 322.2(M + +Na); HRMS (EI) for C 15 H 22 ClNS: calcd , found Br 4f [α] D (c 2.81, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.22 (s, 9H), 1.75 (s, 3H), 2.03 (s, 1H), 2.64 (d, 2H, J = 7.36 Hz), (m, 2H), (m, 1H), 7.31 (dd, 2H, J = 2.04, 6.71 Hz), 7.46 (dd, 2H, J = 2.08, 6.74 Hz) ppm ; 13 C NMR (100 MHz, CDCl 3 ): δ 22.77, 27.60, 48.97, 56.27, 59.71, , , , , , ppm; FT-IR (film, cm -1 ) ν 3216, 2977, 2925, 2867, 1487, 1396, 1364, 1059, 1008, 825, 600; ESI-MS (m/z, %): (M + +H), 368.1(M + +Na); HRMS (EI) for C 15 H 22 BrNS: calcd , found F 4g [α] D (c 2.87, CHCl 3 ); 1 H NMR (400 MHz, CDCl3): δ 1.22 (s, 9H), 1.76 (s, 3H), 2.65 (d, 2H, J = 7.41 Hz ), 3.73 (s, 1H), (m, 2H), (m, 1H), (m, 2H), (m, 2H) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.75, 27.79, 49.16, 56.18, 59.60, , , , , , , , , , ppm; FT-IR (film, cm-1) ν 3209, 3076, 2958, 2925, 2855, 1603, 1510, 1456, 1376, 1227, 1163, 1055, 918, 836, 817, 594; ESI-MS (m/z, %): (M + +H); HRMS (EI) for C 15 H 22 FNS: calcd , found S13
14 H 3 C 4h [α] D (c 2.02, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.23 (s, 9H), 1.75 (s, 3H), 2.35 (s, 3H), 2.67 (d, 2H, J = 7.31 Hz), 3.75 (s, 1H), (m, 2H), (m, 1H), (m, 1H), (m, 3H) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 21.64, (22.73), 27.75, 49.12, 56.21, 59.87, , , , , , , , ppm; FT-IR (film, cm-1) ν 3208, 2923, 2853, 1606, 1456, 1377, 1184, 1056, 914, 787, 706, 643; ESI-MS (m/z, %): (M + +H); HRMS (EI) for C 16 H 25 NS: calcd , found Cl 4i [α] D (c 4.68, CHCl 3 ); 1 H NMR (400 MHz, CDCl 3 ): δ 1.24 (s, 9H), 1.77 (s, 3H), 2.65 (d, 2H, J = 7.35 Hz), 3.76 (s, 1H), (m, 2H), (m, 1H), (m, 3H), 7.43 (t, 1H, J = 1.61Hz) ppm; 13 C NMR (100 MHz, CDCl 3 ): δ 22.75, 27.60, 48.99, 56.30, 59.72, , , , , , , , ppm; FT-IR (film, cm-1) ν 3209, 3079, 2977, 2955, 2922, 2851, 1595, 1573, 1474, 1056, 918, 785, 698; ESI-MS (m/z, %): (M + +H); HRMS (EI) for C 15 H 22 ClNS: calcd , found S14
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