科研之友
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摘要
Under the conditions of nickel(0) catalysis, enantiomerically enriched vinyl dioxanones engage boroxines or B-2(pin)(2) in stereospecific cross-coupling to form diverse tetrasubstituted cyclopropanes bearing all-carbon quaternary stereocenters. The collective data corroborate a mechanism involving nickel(0)-mediated benzylic oxidative addition with inversion of stereochemistry followed by reversible olefin insertion to form a (cyclopropylcarbinyl)nickel complex, which upon reductive elimination releases the cyclopropane.
- 出版日期2017-5-24
