Asymmetric addition reactions
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United States of America Patent
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Nov 5, 2019
Grant Date -
Nov 22, 2018
app pub date -
Jun 1, 2016
filing date -
Jun 9, 2015
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Abstract
Processes of forming Csp2—Csp3 bonds at the allylic carbon of a cyclic allylic compound starting material are disclosed, in which a racemic mixture of a cyclic allylic compound having a leaving group attached to the allylic carbon is reacted with a compound having a nucleophilic carbon atom in the presence of a Rh(I), Pd(II) or Cu(I) pre-catalyst and a chiral ligand. The reaction products containing the newly-formed Csp2—Csp3 bond are generated in high stereoisomeric excess, and may therefore serve as important organic building blocks in the preparation of new agrochemicals and pharmaceuticals.
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