CHIRAL LATTICE-CONTROLLED ASYMMETRIC PHOTOISOMERIZATION OF (2-CYANOETHYL)COBALOXIMES IN THE SOLID-STATE

Solid-state asymmetric photoisomerization of 2-cyanoethylcobaloxime complexes occurred to afford optically active 1-cyanoethylcobaloxime complexes with moderate to high enantioselectivities (similar to 82%ee). The X-ray crystal structure analysis of (R)-2-phenylglycinol-coordinated complex revealed...

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Bibliographic Details
Published inChemistry letters no. 4; pp. 715 - 718
Main Authors OHGO, Y, ARAI, Y, HAGIWARA, M, TAKEUCHI, S, KOGO, H, SEKINE, A, UEKUSA, H, OHASHI, Y
Format Journal Article
LanguageEnglish
Published TOKYO Chemical Soc Japan 01.04.1994
Subjects
Chemistry
Chemistry, Multidisciplinary
Physical Sciences
Science & Technology
ACHIRAL OXO AMIDE
BETA-LACTAM
CRYSTALLINE-STATE
YIELD
COMPLEXES
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Summary:Solid-state asymmetric photoisomerization of 2-cyanoethylcobaloxime complexes occurred to afford optically active 1-cyanoethylcobaloxime complexes with moderate to high enantioselectivities (similar to 82%ee). The X-ray crystal structure analysis of (R)-2-phenylglycinol-coordinated complex revealed that the 2-cyanoethyl group is forced to take a chiral conformation by chiral crystal lattice. The enantioselection mechanism is also discussed based on the X-ray results.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.1994.715