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- W2484582017 abstract "Cinnamyl chlorides undergo selective S N2' allylic substi- tution by Grignard reagents using catalytic amount (1 mol%) of CuCN and 1-2 mol% trivalent phosphorus ligand, in dichlo- romethane. With chiral phosphorus ligands derived from TADDOL ee's up to 73% could be obtained. Allylic compounds have been of synthetic, mechanistic and biological importance for over 50 years. Catalytic asymmetric allylic substitutions are therefore potentially useful methods for the preparation of a wide range of chiral molecules. The copper(I)-catalyzed allylic substitu- tion reaction has generated a great deal of interest in re- cent years and several methods have been developed for the control of both regio- and stereochemistry in this reac- tion. An advantage is that a broad range of organometallic compounds, organolithium, Grignard and organozinc re- agents can be used in these allylic substitutions. 1-6 Cop-" @default.
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- W2484582017 date "2001-01-01" @default.
- W2484582017 modified "2023-09-27" @default.
- W2484582017 title "Enantioselective Copper-Catalyzed S N 2' Substitution with Grignard Reagents" @default.
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