acids react with amino alcohols, amino mercaptans or diamines in the presence of triphenylphosphine, CCl4 and tert. bases to afford in 50–75% yield the corresponding Δ2-oxazolines, Δ2-oxazines, Δ2-thiazolines and Δ2-imidazolines.
羧酸在
三苯基膦,CCl 4和叔胺的存在下与
氨基醇,
氨基
硫醇或二胺反应。个碱基至50-75%得到得到相应的Δ 2个-oxazolines,Δ 2个-oxazines,Δ 2 -thiazolines和Δ 2个-imidazolines。