我们已经介绍了我们在烷基硼烷上的全部工作细节,我们已将其引入作为铜催化的S N 2'型对映选择性烯丙基取代的新试剂。铜催化递送了富含对映体的手性产物,该手性产物包含带有官能化的sp 3-烷基的叔碳或季碳立体异构中心。通过已建立的烯烃加氢硼化反应,烷基硼烷的广泛可用性是这些转化的吸引人的特征。基板中可以容忍各种官能团。提出了一种通过烯丙基氯底物加成-消除中性烷基铜(I)物种的反应途径。
The first catalytic enantioselective allylic substitution reaction with alkylboron compounds has been achieved. The reaction between alkyl-9-BBN reagents and primary allylic chlorides proceeded with excellent γ-selectivities and high enantioselectivities under catalysis of a Cu(I)-DTBM-SEGPHOS system. The protocol produces terminal alkenes with an allylic stereogenic center branched with functionalized