Convenient and Efficient Access to Fluoroalkylated Vinylphosphonates via Highly Regio- and Stereoselective Hydrometalation or Carbometalation Reactions of Fluorine-Containing Alkynylphosphonates
作者:Tsutomu Konno、Atsunori Morigaki、Kazuo Ninomiya、Tomotsugu Miyabe、Takashi Ishihara
DOI:10.1055/s-2008-1032143
日期:2008.2
The hydrostannation, carbocupration, and carbozincation reactions of fluorinated alkynylphosphonates were investigated. The hydrostannation reaction proceeded smoothly without an additive (e.g., BEt3/O2, AIBN) to give the corresponding vinylstannanes in a highly regio- and stereoselective manner. Various cuprates, prepared from organolithium, Grignard, and organozinc reagents, could participate nicely in the carbocupration reactions, the corresponding adducts were obtained in good to high yields. Dialkylzinc reagents reacted smoothly with the alkynylphosphonates even in the absence of copper salt to afford the corresponding adducts in good yields.
对氟化烷炔磷酸酯的氢锡化、碳铜化和碳锌化反应进行了研究。氢锡化反应在没有添加剂(如 BEt3/O2, AIBN)的情况下顺利进行,以高度区域选择性和立体选择性生成相应的乙烯基锡化物。多种铜盐,从有机锂、格林尼亚试剂和有机锌试剂制备的,可以很好地参与碳铜化反应,相应的加成产物以良好至高的产率获得。双烷基锌试剂即使在没有铜盐的情况下也能与烷炔磷酸酯顺利反应,获得相应的加成产物,产率良好。