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Title: Stereoselective formation of trisubstituted (Z)-chloroalkenes adjacent to a tertiary carbon stereogenic center by organocuprate-mediated reduction/alkylation. Author: Narumi T, Kobayakawa T, Aikawa H, Seike S, Tamamura H. Journal: Org Lett; 2012 Sep 07; 14(17):4490-3. PubMed ID: 22900591. Abstract: A robust and efficient method for the synthesis of trisubstituted (Z)-chloroalkenes is described. A one-pot reaction of γ,γ-dichloro-α,β-enoyl sultams involving organocuprate-mediated reduction/asymmetric alkylation affords α-chiral (Z)-chloroalkene derivatives in moderate to high yields with excellent diastereoselectivity, and allylic alkylation of internal allylic gem-dichlorides is also demonstrated. This study provides the first examples of the use of allylic gem-dichlorides adjacent to the chiral center for novel 1,4-asymmetric induction.[Abstract] [Full Text] [Related] [New Search]