Chiral Bifunctional Ferrocenylphosphine‐Catalyzed Enantioselective Allylic Alkylation of Morita−Baylis−Hillman Carbonates with Pyrazolin‐5‐ones

Wenjun Luo,Dingguo Song,Lu Fang,Sanfei Nian,Huacui Hou,Fei Ling,Weihui Zhong

ASIAN JOURNAL OF ORGANIC CHEMISTRY（2018）

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摘要

A chiral bifunctional ferrocenylphosphine catalyzed asymmetric allylic alkylation of Morita-Baylis-Hillman (MBH) carbonates with pyrazolin-5-ones was developed. The reaction afforded the desired pyrazolone derivatives in moderate to good yields (up to 80%), and with high enantioselectivities (up to 98% ee).

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关键词

asymmetric catalysis,alkylation,allylic compounds,pyrazolones,gamma-selectivity

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