反应详情

Trans-4-Amino-cyclohexanecarboxylic acid methyl ester (2.14 g, 11.05 mmol) was suspended in THF (50 ml) and Et3N (2.79 g, 27.6 mmol) and cooled to 0° C. 5-Chloro-2-methylnicotinoyl chloride (Intermediate C) (2.20 g, 11.05 mmol) was slowly added portionwise and the reaction mixture was stirred at RT for 2 hours. The reaction mixture was partitioned between EtOAc and 1M HCl. The organic phase was washed with water, brine, dried over MgSO4, filtered and the solvent was removed in vacuo to afford the title product which was used in the next step without further purification. 1H NMR (400 MHz, DMSO-d6) δ 8.53 (1H, d), 7.42 (1H, 5), 7.80 (1H, d), 3.70 (1H, m), 3.60 (3H, s), 2.49 (3H, s), 2.29 (1H, m), 1.95 (4H, m), 1.42 (2H, m), 1.29 (2H, m); [M+H]+311.26.

1. customThe reaction mixture was partitioned between EtOAc and 1M HCl
2. washThe organic phase was washed with water, brine
3. dry with materialdried over MgSO4
4. filtrationfiltered
5. customthe solvent was removed in vacuo