Subjecting 1,4-bis-[(pyrrolin-3-onyl)methylamino]-2-butyne to ultraviolet irradiation effects rearrangement in greater than 80% yield to 1,4-bis-[(isocyanatocycloprolpyl)methylamino]-2-butyne. The diisocyanate is useful in the synthesis of polyurethanes and polyureas and also for the in situ photochemical generation of a cross-linking agent for polyurethanes and structurally related polymers.
将1,4-双[(
吡咯烷-3-基)甲基
氨基]-
2-丁炔暴露于紫外光照射下,可使80%以上的产率发生重排反应,生成1,4-双[(异
氰酸环丙基)甲基
氨基]-
2-丁炔。该二
异氰酸酯可用于合成聚
氨酯和聚
氨酰,并且还可用于原位光
化学交联剂的产生,以用于聚
氨酯和结构相关聚合物的交联。