The CF3SO3H-promoted ring opening of gem-difluorocyclopropyl ketones prefers to undergo proximal bond cleavage and the subsequent cyclization with nitriles occurred smoothly to give 2-fluoropyrroles.
CF3SO3H促进的宝石-二
氟环丙基酮的开环反应倾向于进行近端键裂解,随后与腈的环化反应顺利进行,从而生成2-
氟吡咯。