Alkyl Group Migration in Ni-Catalyzed Conjunctive Coupling with C(sp<sup>3</sup>) Electrophiles: Reaction Development and Application to Targets of Interest
作者:Seung Moh Koo、Alex J. Vendola、Sarah Noemi Momm、James P. Morken
DOI:10.1021/acs.orglett.9b04453
日期:2020.1.17
cross-coupling reaction is developed that allows the construction of chiral organoboronic esters from alkylboron ate complexes and alkyl iodide electrophiles. The process occurs most efficiently with a Ni/Pybox-comprised catalyst and with an acenapthoquinone-derived boron ligand. Because of the broad functional group tolerance of this reaction, it can be a versatile tool for organicsynthesis. Applications
smetalation/acylation sequence applied to Boc-protected 1-aminobut-3-enes is presented. This method was applied to the stereoselectivesynthesis of cyclic imines (or iminiums) which were diastereoselectively converted into 2-cis-substituted and 2,6-cis-disubstituted piperidines. The potential of this approach in the field of alkaloid synthesis was illustrated by the synthesis of (−)-coniine and (−)-indolizidine