Engaging Alkenes and Alkynes in Deaminative Alkyl–Alkyl and Alkyl–Vinyl Cross-Couplings of Alkylpyridinium Salts
作者:Kristen M. Baker、Diana Lucas Baca、Shane Plunkett、Mitchell E. Daneker、Mary P. Watson
DOI:10.1021/acs.orglett.9b03899
日期:2019.12.6
An alkyl-alkyl cross-coupling of Katritzky alkylpyridinium salts and organoboranes, formed in situ via hydroboration of alkenes, has been developed. This method utilizes the abundance of both alkyl amine precursors and alkenes to form C(sp3)-C(sp3) bonds. This strategy is also effective with alkynes, enabling a C(sp3)-C(sp2) cross-coupling. Under these mild conditions, a broad range of functional groups
已经开发了通过烯烃的氢硼化原位形成的卡特立斯基烷基吡啶鎓盐和有机硼烷的烷基-烷基交叉偶联。此方法利用烷基胺前体和烯烃的丰度来形成C(sp3)-C(sp3)键。此策略对炔烃也有效,可实现C(sp3)-C(sp2)交叉偶联。在这些温和的条件下,可以耐受包括质子基团在内的各种官能团。如以前的烷基吡啶鎓交叉偶联所见,机理研究支持烷基自由基中间体。