Inter- and intramolecular palladium-catalyzed hydrocarbonation of methylenecyclopropanes with carbon pronucleophiles
作者:Naofumi Tsukada、Akinori Shibuya、Itaru Nakamura、Haruo Kitahara、Yoshinori Yamamoto
DOI:10.1016/s0040-4020(99)00447-0
日期:1999.7
intramolecular additions of pronucleophiles to methylenecyclopropanes proceeded smoothly in the presence of catalytic amounts of Pd(PPh3)4, affording hydrocarbonation products in good to high yields. The ring opening of methylenecyclopropanes mainly occurred at the distal position to the exomethylene. In some cases, proximal bond cleavage also took place. The mode of ring opening depended upon both the
在催化量的Pd(PPh 3)4存在下,亲核试剂向亚甲基环丙烷的分子间和分子内加成反应顺利进行,从而提供了高产率或高产率的烃化产物。亚甲基环丙烷的开环主要发生在外亚甲基的远端位置。在某些情况下,也发生了近端键断裂。开环的方式既取决于亲核试剂的结构,也取决于外亚甲基碳上的取代基。