ethyl 5-[(diethoxyphosphinyl)hydroxymethyl]imidazo-[1,2-a]pyridine-2-carboxylate 、 8-(phosphonomethyl)imidazo[1,2-a]pyridine-2-carboxylic acid 、
1,4-二氧六环 、
氯 在
乙醚 作用下,
以to give 1.3 g (99%) of the title product的产率得到ethyl 5-[(diethoxyphosphinyl)hydroxymethyl]imidazo-[1,2-a]pyridine-2-carboxylate, monohydrochloride