The 4-π-photocyclization of a range of 1,2-dihydropyridazines is described, generating bicyclic 1,2-diazetidines in high yields on multigram scale. The key bicyclic 1,2-diazetidines are versatile synthetic intermediates and were easily converted into a range of novel derivatives, including functionalized 1,2-diazetidines, cyclobutenes, cyclobutanes, and 1,3-dienes.
描述了一系列1,2-二氢
哒嗪的4-π-光环化,以多克规模高产率产生双环1,2-二氮杂
环丁烷。关键的双环1,2-二氮杂
环丁烷是通用的合成中间体,可以轻松转化为一系列新型衍
生物,包括功能化的1,2-二氮杂
环丁烷,
环丁烯,
环丁烷和1,3-二烯。