Physics 版 (精华区)
发信人: zjliu (秋天的萝卜), 信区: Physics
标 题: 氢键:通过手性乙醇催化剂得到单对映体
发信站: 哈工大紫丁香 (Thu Jul 10 13:56:27 2003)
Nature 424, 146 (10 July 2003); doi:10.1038/424146a
Hydrogen bonding: Single enantiomers from a chiral-alcohol catalyst
YONG HUANG, ADITYA K. UNNI, AVINASH N. THADANI & VIRESH H. RAWAL
Department of Chemistry, University of Chicago, Chicago, Illinois 60637, USA
e-mail: vrawal@uchicago.edu
Hydrogen bonding acts as a ubiquitous glue to sustain the intricate
architecture and functionality of proteins, nucleic acids and many
supramolecular assemblies, but this weak interaction is seldom used as a
force for promoting chemical reactions. Here we show that a simple chiral
alcohol uses hydrogen bonding to catalyse an important family of
cycloaddition reactions of a diene with various aldehydes — moreover, this
reaction is highly enantioselective, generating only one of the
mirror-image forms of each dihydropyran product. This type of catalysis
mimics the action of enzymes and antibodies, and is unlike traditional,
metal-based catalysts used in organic chemistry.
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