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Design of Chiral Bifunctional Dialkyl Sulfide Catalysts for Regio‐, Diastereo‐, and Enantioselective Bromolactonization
Author(s) -
Nishiyori Ryuichi,
Tsuchihashi Ayano,
Mochizuki Ayaka,
Kaneko Kazuma,
Yamanaka Masahiro,
Shirakawa Seiji
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201803703
Subject(s) - enantioselective synthesis , bifunctional , sulfide , moiety , catalysis , chemistry , organic chemistry , combinatorial chemistry
Although a wide variety of chiral organocatalysts have been developed for asymmetric transformations, effective chiral dialkyl sulfide organocatalysts remain relatively rare and under‐developed, despite the potential utility of dialkyl sulfide catalysts. Herein, we report the development of chiral bifunctional dialkyl sulfide catalysts possessing a urea moiety for regio‐, diastereo‐, and enantioselective bromolactonization. The importance of the bifunctional design of chiral sulfide catalysts was clearly demonstrated in the present work. The roles of both the sulfide and urea moieties of the catalyst were clarified based on the results of experimental and theoretical investigation.