作者:Gérard Cahiez、Olivier Gager、Vanessa Habiak
DOI:10.1055/s-2008-1067194
日期:2008.8
Stereoselective preparation of trisubstituted olefins can be easily performed from an Z/E-mixture of enol phosphates by reacting only the E-isomer with a Grignard reagent in the presence of Fe(acac) 3 . This procedure combines a kinetic differentiation and a stereoselective reaction. The coupling is very chemoselective in the presence of an alkyl chloride, an ester, a ketone or a nitrile.
通过在 Fe(acac) 3 存在下仅使 E-异构体与格氏试剂反应,可以很容易地从烯醇磷酸酯的 Z/E-混合物进行三取代烯烃的立体选择性制备。该过程结合了动力学微分和立体选择性反应。在烷基氯、酯、酮或腈的存在下,偶联是非常化学选择性的。