Preparation of α-ketophosphonates by oxidation of α-hydroxyphosphonates with neutral alumina supported potassium permanganate (NASPP) under solvent-free conditions and potassium permanganate in dry benzene
作者:Habib Firouzabadi、Nasser Iranpoor、Sara Sobhani
DOI:10.1016/s0040-4039(01)02146-3
日期:2002.1
Various types of α-hydroxyphosphonates were converted to α-ketophosphonates in high yields by potassiumpermanganate in dry benzene or by neutral alumina supported potassiumpermanganate (NASPP) under solvent-free conditions.
Surface-mediated solid-phase reactions: the preparation of acyl phosphonates by oxidation of 1-hydroxyphosphonates on the solid surface
作者:Babak Kaboudin
DOI:10.1016/s0040-4039(00)00323-3
日期:2000.4
Alumina-supported CrO3, under solvent-free conditions, was found to be an efficient oxidizing reagent for the preparation of acyl phosphonates from 1-hydroxyphosphonates. This method is an easy, rapid, and high-yielding reaction for the preparation of acyl phosphonates from 1-hydroxyphosphonates. (C) 2000 Elsevier Science Ltd. All rights reserved.
A CONVENIENT AND MILD PROCEDURE FOR THE PREPARATION OF α-KETO PHOSPHONATES OF 1-HYDROXYPHOSPHONATES UNDER SOLVENT-FREE CONDITIONS USING MICROWAVE
作者:Babak Kaboudin、Rahman Nazari
DOI:10.1081/scc-100104822
日期:2001.1
The Reactions of 1-hydroxyphosphonates on the alumina-supported CrO3 are accelerated by microwave irradiation under solvent-free conditions to afford a high yielding synthesis of alpha -keto phosphonates.
Diametric Stereocontrol in Dynamic Catalytic Reduction of Racemic Acyl Phosphonates: Divergence from α-Keto Ester Congeners
作者:Michael T. Corbett、Jeffrey S. Johnson
DOI:10.1021/ja310980q
日期:2013.1.16
Ru-catalyzed asymmetric transfer hydrogenation of acyl phosphonates: reduction proceeded from the opposite face relative to that observed in the analogous reduction of α-keto esters. The first highly selective catalytic hydrogenation of acyl phosphonates was utilized in the dynamic kinetic resolution of α-aryl acyl phosphonates, providing β-stereogenic α-hydroxy phosphonic acidderivatives.