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Development of Chiral Catalysts by Asymmetric Activation for Highly Enantioselective Diethylzinc Addition to Imines

Liu‐Zhu Gong, Hai‐Le Zhang, Hua Liu, Xin Cui, Aiqiao Mi, Yaozhong Jiang

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Abstract

Based on the asymmetric activation concept, a library of chiral zinc complexes in situ formed by the combination of diimines derived from chiral 1,2-diphenyl-ethanene-1,2-diamine, BINOL derivatives, and diethylzinc are evaluated in the asymmetric addition of diethylzinc to N-acylimines. In the presence of 10 mol% L3ZnA1, high enantioselectivities and yields were provided for a wide range of aromatic imines in 1,2-dichloroethane at -25 °C.

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What this paper is about

Based on the asymmetric activation concept, a library of chiral zinc complexes in situ formed by the combination of diimines derived from chiral 1,2-diphenyl-ethanene-1,2-diamine, BINOL derivatives, and diethylzinc are evaluated in the asymmetric addition of diethylzinc to N-acylimines. In the presence of 10 mol% L3ZnA1, high enantioselectivities and yields were provided for a wide range of aromatic imines in 1,2-dichloroethane at -25 °C.

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Available abstract

Based on the asymmetric activation concept, a library of chiral zinc complexes in situ formed by the combination of diimines derived from chiral 1,2-diphenyl-ethanene-1,2-diamine, BINOL derivatives, and diethylzinc are evaluated in the asymmetric addition of diethylzinc to N-acylimines. In the presence of 10 mol% L3ZnA1, high enantioselectivities and yields were provided for a wide range of aromatic imines in 1,2-dichloroethane at -25 °C.

Key concepts: Diethylzinc, Chemistry, Enantioselective synthesis, Catalysis, Zinc, Organic chemistry, Combinatorial chemistry

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Development of Chiral Catalysts by Asymmetric Activation for Highly Enantioselective Diethylzinc Addition to Imines — Research Paper | ScholarLens