Convenient Synthesis of Cyclic α-Aminophosphonates by Alkylation-Cyclization Reaction of Iminophosphoglycinates Using Phase-Transfer Catalysis
作者:Oscar Abelardo Ramírez-Marroquín、Iván Romero-Estudillo、José Luis Viveros-Ceballos、Carlos Cativiela、Mario Ordóñez
DOI:10.1002/ejoc.201501203
日期:2016.1
The alkylation reaction of diethyl N-(diphenylmethylene)aminomethylphosphonate (6) with alkyldihalides under phase-transfer catalysis followed by hydrolysis of the benzophenone imine moiety and subsequent cyclization provides a simple and convenient method for the synthesis of known and new cyclic α-aminophosphonates 1–5 in moderate to good yields.