Silica-Supported Ammonium Hydrogen Carbonate as an Efficient Reagent for One-Pot Synthesis of 1-Aminophosphonates from Aldehydes
作者:Babak Kaboudin、Abbas Rahmani
DOI:10.1055/s-2003-42427
日期:——
Silica-supported ammonium hydrogen carbonate was found to be an efficient reagent for the synthesis of 1-aminophosphonates under microwave irradiation in solvent-free conditions. This method is an easy, rapid, one-pot, and good-yielding reaction for the synthesis of 1-aminophosphonates.
Three novel dental monomers containing phosphonic acid groups (1a and 2a, based on diethyl amino(phenyl)methylphosphonate and 3a based on diethyl 1‐aminoheptylphosphonate) were synthesized in two steps: the reaction of α‐aminophosphonates with acryloyl chloride (for monomers 1a and 3a) or methacryloyl chloride (for 2a) to give monomers with phosphonate groups, and the hydrolysis of phosphonate groups
分两个步骤合成了三种含有膦酸基团的新型牙科单体(分别基于氨基(苯基)甲基二膦酸二乙酯的1a和2a和基于1-氨基庚基膦酸二乙酯的3a):α-氨基膦酸酯与丙烯酰氯的反应(对于单体1a和1a)3a)或甲基丙烯酰氯(2a)生成具有膦酸酯基团的单体,并使用三甲基甲硅烷基溴化物水解膦酸酯基团。FTIR,1 H,13 C和31证实了它们(和中间体)的结构1 H NMR光谱。所有的单体都很好地溶于水(1
Molecular iodine: An efficient catalyst for the one-pot synthesis of primary 1-aminophosphonates
作者:S. Sobhani、A. Vafaee
DOI:10.1007/bf03245883
日期:2010.3
A new and convenient procedure has been developed for the one-pot synthesis of different types of primary 1-aminophosphonates from aldehydes/ketones, HMDS and diethyl phosphite using I-2 as an inexpensive, non-toxic, non-metallic and readily available catalyst. These reactions proceeded under solvent-free conditions and produced the desired products in high yields.