反应详情

A slurry of tert-butyl 6-amino-2-chloro-4,5-dimethylnicotinate (1.2 g, 4.7 mmol, 1 equiv) and 1-bromo-3-(2-bromo-1,1-dimethoxyethyl)benzene (2.3 g, 7.0 mmol, 1.5 equiv) in chlorobenzene (23 mL) was heated at reflux for 1.5 h. Upon cooling to ambient temperature, the reaction was added slowly to ether. The slurry was stirred for 15 min and the filtered to provide the product as a HBr salt (1.86 g, 85%). 1H NMR (400 MHz, DMSO-d6) δ 8.73 (s, 1H), 8.32 (s, 1H), 8.12 (d, J=7.8 Hz, 1H), 7.56 (d, J=8.0 Hz, 1H), 7.47-7.40 (m, 1H), 2.56 (s, 3H), 2.30 (s, 3H), 1.60 (s, 9H); LCMS (ESI, M+1): 435.05.

1. temperatureat reflux for 1.5 h
2. filtrationthe filtered