A Convenient Method for ChemoselectiveO-Methylation of Hydroxypyridines
摘要:
O-Methylation of 3-hydroxypyridine derivatives (1a-g) wing ethereal-diazomethane in tert-butanol at -20 degrees C to rt, afforded the corresponding 3-methoxypyridine derivatives (2a-g) in 54-94% yield.