The preparation of perfluoroalkenyl allenes (trienes) and pentafluorophenyl allenes
作者:Donald J. Burton、Greg A. Hartgraves
DOI:10.1016/j.jfluchem.2008.10.008
日期:2009.2
substrates, mixtures of alkyne/allene are obtained; the allene product is the major product. With tertiary propargylic substrates, the allene is regiospecifically and stereospecifically formed in good isolated yields. With pentafluorophenyl copper and primary propargylic substrates, the major product is pentafluorobenzene. With secondary and tertiary propargylic substrates, the allene is regiospecifically formed
三氟乙烯基-和(Z)-五氟丙烯基铜试剂容易与炔丙基卤化物或甲苯磺酸盐反应。对于主要的炔丙基底物,主要产物是炔烃。在第二炔丙酸酯底物下,得到炔烃/丙二烯的混合物。丙二烯产品是主要产品。对于叔炔丙基底物,丙二烯以良好的分离产率在区域上和立体上形成。具有五氟苯基铜和主要炔丙基底物,主要产品是五氟苯。对于第二和第三炔丙基底物,丙二烯以良好的分离产率在区域上特异性形成。