An Improved Procedure for the Preparation of [Bis(2,2,2-trifluoroethyl)phosphono]acetic Acid
作者:Antonio Burtoloso、Viviana da Silva Prado
DOI:10.1055/s-0029-1217086
日期:2010.1
A different and improved procedure for the preparation of [bis(2,2,2-trifluoroethyl)phosphono]acetic acid in just one step from bis(2,2,2-trifluoroethyl) phosphonate is described. The protocol employs a Michaelis-Becker reaction between commercially available bis(2,2,2-trifluoroethyl) phosphonate and bromoacetic acid, furnishing [bis(2,2,2-trifluoroethyl)phosphono]acetic acid in 50-54% yield. [bis(2
描述了在仅一步中由双(2,2,2-三氟乙基)膦酸酯制备[双(2,2,2-三氟乙基)膦基]乙酸的另一种改进方法。该方案在可商购获得的双(2,2,2-三氟乙基)膦酸酯和溴乙酸之间采用Michaelis-Becker反应,以50-54%的收率提供[双(2,2,2-三氟乙基)膦酰基]乙酸。 [双(2,2,2-三氟乙基)膦基]乙酸-霍纳-沃兹沃思-埃蒙斯(HWE)反应-Michaelis-Becker反应-Still-Gennari反应