Effective lithiation of 3-bromopyridine: synthesis of 3-pyridine boronic acid and variously 3-substituted pyridines
作者:Dongwei Cai、Robert D Larsen、Paul J Reider
DOI:10.1016/s0040-4039(02)00776-1
日期:2002.6
By using toluene as a solvent, 3-lithiopyridine can be generated cleanly at -50degreesC. The addition of various electrophiles affords useful building blocks, such as the 3-pyridine boronic acid in, 87% isolated yield. (C) 2002 Elsevier Science Ltd. All rights reserved.