Catalyst-free ultrasonic-promoted multicomponent synthesis of tertiary α-amino phosphonates
作者:Reddi Mohan Naidu Kalla、Jaeyeong Bae、Il Kim
DOI:10.1039/c7nj00944e
日期:——
developed for the synthesis of a new class of tertiary α-aminophosphonates (TAPs) via the Kabachnik–Fields reactions of substituted salicylaldehydes and 2-hydroxy naphthaldehyde, di-n-butylamine, and di-or tri-alkylphosphites in water under ultrasound irradiation as well as under conventional conditions. These multi-component reactions were performed at room temperature without using any catalysts in
An Auto-catalyzed Mannich-TypeReaction for Synthesis of Highly Substituted α-Aminomethylphosphonates
作者:Rifang Yang、Rusheng Zhao、Lizhi Zhao、Liuhong Yun、Hai Wang
DOI:10.1055/s-2003-38679
日期:——
It has been found that a Mannich-type reaction catalyzed by an intramolecular phenolic hydroxy group involves simply heating a hydroxybenzaldehyde with a secondary amine and a dialkyl phosphite in alcohol, produced highly substituted α-aminomethylphosphonates. The corresponding reaction can hardly be detected if the hydoxy group of the benzaldehyde is absent or blocked, or the hydroxybenzaldehyde is replaced by 2′-hydroxyacetophenone.