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Catalytic asymmetric synthesis of new halogenated chiral synthons
Author(s) -
Vanhessche Koen P. M.,
Barry Sharpless K.
Publication year - 1997
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.19970030406
Subject(s) - synthon , dihydroxylation , enantioselective synthesis , chemistry , catalysis , sulfuryl chloride , nucleophile , sulfate , organic chemistry , chloride , trifluoromethyl , combinatorial chemistry , alkyl
Two‐step and practical asymmetric syntheses of enantiomerically pure 4‐trifluoromethyl‐2,2‐dioxo‐1,3,2‐dioxathiolane and 4‐trichloromethyl‐2,2‐dioxo‐1,3,2‐dioxathiolane (>98% ee ) have been achieved. Catalytic asymmetric dihydroxylation (AD) of 3,3,3‐trifluoropropene and 3,3,3‐trichloropropene, respectively, is followed by direct cyclic sulfate formation by reaction with sulfuryl chloride. Opening of the cyclic sulfates with various nucleophiles provides easy access to important chiral synthons.