A simple synthesis of monofluoromethylene bisphosphonic acid
作者:David W. Hutchinson、David M. Thornton
DOI:10.1016/0022-328x(88)80556-4
日期:1988.2
monofluoromethylene bisphosphonic acid has been devised, starting with an Arbusov reaction between fluorotribromomethane and triisopropylphosphite to give diisopropyl dibromofluoromethylphosphonate. A Michaelis-Becker reaction between the latter and an excess of the sodium salt of diisopropyl phosphite yields tetraisopropyl bromofluoromethylene bisphosphonate, which is not isolated but undergoes nucleophilic debromination
The synthesis of alpha-fluorinated cyclopropylphosphonates is efficiently achieved for the first time by electroreduction of diisopropyl dibromofluoromethylphosphonate in the presence of Michael accepters in a one-compartment cell equipped with a magnesium sacrificial anode. (C) 1999 Elsevier Science Ltd. All rights reserved.
A new “one-pot” conversion of trifluoroacetic ester to α-fluoro-β-trifluoromethyl-β-alkoxy-vinylphosphonates
作者:Yanchang Shen、Yuming Zhang
DOI:10.1016/s0022-1139(00)00404-8
日期:2001.3
A new ''one-pot'' conversion of trifluoroacetic esters to alpha -fluoro-beta -trifluoromethyl-beta -alkoxy-vinylphosphonates can be achieved in a process of sequential transformations. (C) 2001 Elsevier Science B.V. All rights reserved.
HUTCHINSON, DAVID W.;THORNTON, DAVID M., J. ORGANOMET. CHEM., 340,(1988) N 1, 93-99