Selective hydroboration of alkenes and alkynes in the presence of aldehydes and ketones
作者:George W Kabalka、Su Yu、Nan-Sheng Li
DOI:10.1139/v98-042
日期:1998.6.1
reactions of terminal alkenes in the presence of ketones or aldehydes with a variety of borane reagents have been investigated. It was found that the selective hydroboration of a terminal alkene in the presence of a ketone or an aldehyde is most efficient when dicyclohexylborane is used as the hydroborating agent. The hydroboration of olefinic ketones and olefinic aldehydes with dicyclohexylborane generates
已经研究了在酮或醛存在下末端烯烃与各种硼烷试剂的反应。发现当二环己基硼烷用作硼氢化剂时,在酮或醛存在下末端烯烃的选择性硼氢化是最有效的。烯酮和烯醛与二环己基硼烷的硼氢化反应在用过硼酸钠氧化后以良好的产率生成相应的羟基醛和羟基酮。炔基酮和炔基醛与二环己基硼烷发生硼氢化反应,质子化后生成相应的烯烃羰基化合物,氧化后生成二羰基化合物。关键词:硼氢化,还原,二环己基硼烷,羟基醛,羟基酮。