Treatment of a tertiary phosphoramidate bearing a secondary amino group by hard bases leads by intramolecular cyclization to good yields of diazaphospholanes. The conversion into amides by exchange reactions with butyllithium, lithium alkylamides and complex bases is reported.
通过硬碱处理带有仲
氨基的叔
氨基
磷酸酯可导致分子内环化,从而产生高产率的二氮杂膦酮。据报道,通过与丁基
锂,烷基酰胺化
锂和复杂的碱进行交换反应而转化为酰胺。