Novel Heterocyclic System - 2,4,1-Benzoxazaphosphinine: Convenient Substrate for Synthesis of Derivatives of 2,4-Diaminophenylphosphonic Acid
作者:Alexei O. Pushechnikov、Dmitrii G. Krotko、Dmitrii M. Volochnyuk、Andrei A. Tolmachev
DOI:10.1055/s-2001-14584
日期:——
N-Acylanilides having electron-donating substituents attached at a proper position react with phosphorus (III) bromides forming the new heterocyclic system - 2,4,1-benzoxazaphosphinine. 1-Arylamino-2,4,1-benzoxazaphosphinines are hydrolyzed with cleavage of an oxazaphosphinine ring affording mixed amides of 2,4-diaminophenylphosphonic acid in high yield.
在适当位置连接有供电子取代基的 N-酰基苯胺与溴化磷 (III) 反应形成新的杂环体系 - 2,4,1-苯并恶氮膦。 1-芳氨基-2,4,1-苯并氧氮杂膦通过氧氮杂膦环的裂解进行水解,以高产率提供 2,4-二氨基苯基膦酸的混合酰胺。