5-formyl-1H-pyrrolo[2,3-b]pyridine-2-carboxylic acid methyl ester 、
(2-methyl-5-nitrobenzyl)-triphenyl-phosphonium 在
lithium hydroxide 作用下,
以
甲醇 为溶剂,
以69%的产率得到5-[2-(2-methyl-5-nitrophenyl)-vinyl]-1H-pyrrolo[2,3-b]pyridine-2-carboxylic acid methyl ester