A novel catalytic system has been developed to accomplish the hydrophosphorylation of terminal and internal alkynes with high isolated yields (up to 96%) and excellent regio- and stereoselectivity (>99:1). The key factor was to apply a low-ligated palladium/triphenylphosphane (1:2) catalytic system in the presence of a catalytic amount of trifluoroacetic acid. The catalytic system so developed has been applied successfully to permit the formation of diverse alkenylphosphonates utilizing a variety of available H-phosphonates and alkynes.
开发了一种新型催化体系,以高分离收率(高达96%)和优异的区域及立体选择性(>99:1)实现末端和内部
炔烃的亲
水磷酸化。关键因素是在
三氟乙酸催化剂量的存在下,应用低配位
钯/
三苯基膦(1:2)催化体系。所开发的催化体系已成功应用于利用多种可用H-
膦酸酯和
炔烃形成多种烯基
膦酸酯。