Highly efficient metal-free one-pot synthesis of <font>α</font>-aminophosphonates through reduction followed by Kabachnik–fields reaction using three-component system
作者:Murali Krishna Kolli、Palani Elamathi、Govindasamy Chandrasekar、Vishweshwar Rao Katta、Gajendrasinh Balvantsinh Raolji
DOI:10.1080/00397911.2017.1385083
日期:2018.3.19
ABSTRACT One-pot synthesis of α-aminophosphonates directly from aryl nitro compounds, aldehydes/ketones, and diethyl phosphite using sodium dithionite through reduction and followed by Kabachnik–Fields reaction under metal-free conditions is reported. The major advantages are excellent yield, high chemoselectivity, neutral reaction medium, and simple experimental procedure. This methodology consists
摘要报道了使用连二亚硫酸钠通过还原,然后在无金属条件下进行 Kabachnik-Fields 反应,直接从芳基硝基化合物、醛/酮和亚磷酸二乙酯一锅法合成 α-氨基膦酸酯。主要优点是收率高、化学选择性高、反应介质中性、实验过程简单。该方法包括以下步骤:1) 硝基化合物形成胺,2) 胺和醛/酮形成亚胺,3) 磷酸盐加成到亚胺。图形概要