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Asymmetric Synthesis of Alkylzincs by Rhodium‐Catalyzed Enantioselective Arylative Cyclization of 1,6‐Enynes with Arylzincs
Author(s) -
Chen Jiahua,
Hayashi Tamio
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202008770
Subject(s) - rhodium , transmetalation , enantioselective synthesis , alkene , alkyne , diene , intramolecular force , chemistry , catalysis , reactivity (psychology) , combinatorial chemistry , organic chemistry , medicine , natural rubber , alternative medicine , pathology
A chiral diene‐rhodium complex was found to catalyze the reaction of 1,6‐enynes with ArZnCl to give high yields of 2‐(alkylidene)cyclopentylmethylzincs with high enantioselectivity (95–99 % ee ). The enantioenriched alkylzincs were readily converted in a one‐pot approach into a wide variety of functionalized products by taking advantage of their unique reactivity. The catalytic cylcle involves arylrhodation of alkyne, intramolecular alkenylrhodation of alkene, and transmetalation of the alkyl‐rhodium intermediate into alkylzinc.