The use of indium organometallics in multifold and sequential cross-coupling reactions is reported. Triorganoindium reagents (R3In) react, under palladium catalysis, with oligohaloarenes affording the multiple cross-coupling products in a single operation. In the reaction, the three organic groups (alkyl, aryl, alkenyl or alkynyl) attached to indium are efficiently transferred to the electrophile, with only a slight excess of organometallic reagent. We demonstrate that indium organometallics are useful reagents for sequential cross-coupling reactions. This reaction illustrates the high chemoselectivity of R3In.
报告了
铟有机
金属在多重和序列交叉偶联反应中的应用。三有机
铟试剂(R3In)在
钯催化下与多卤代
芳烃反应,在单步操作中得到多重交叉偶联产物。在反应中,连的三个有机基团(烷基、芳基、烯基或炔基)能高效地转移到亲电试剂上,只需要略微过量的有机
金属试剂。我们证明了
铟有机
金属是序列交叉偶联反应的有用试剂。这个反应展示了R3In的高
化学选择性。