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Chiral N-Heterocyclic Carbene−Copper(I)-Catalyzed Asymmetric Allylic Arylation of Aliphatic Allylic Bromides: Steric and Electronic Effects on γ-Selectivity

✍ Scribed by Selim, Khalid B.; Nakanishi, Hirotsugu; Matsumoto, Yasumasa; Yamamoto, Yasutomo; Yamada, Ken-ichi; Tomioka, Kiyoshi

Book ID
120049282
Publisher
American Chemical Society
Year
2011
Tongue
English
Weight
967 KB
Volume
76
Category
Article
ISSN
0022-3263

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Efficient Chiral N-Heterocyclic Carbene/
Efficient Chiral N-Heterocyclic Carbene/Copper(I)-Catalyzed Asymmetric Allylic Arylation with Aryl Grignard Reagents
✍ Khalid B. Selim; Yasumasa Matsumoto; Ken-ichi Yamada; Kiyoshi Tomioka 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 304 KB 👁 2 views

Copper-catalyzed asymmetric allylic alkylation is an efficient C À C bond-forming reaction for obtaining optically active compounds. [1] The use of hard alkyl nucleophiles such as Grignard or organozinc reagents usually produces S N 2' products (g products) with excellent regio-and enantioselectivit