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Zinc Silicates: Very Efficient Heterogeneous Catalysts for the Addition of Primary Alcohols to Alkynes and Allenes
Author(s) -
Breuer Klaus,
Teles J. Henrique,
Demuth Dirk,
Hibst Hartmut,
Schäfer Ansgar,
Brode Stefan,
Domgörgen Hilde
Publication year - 1999
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/(sici)1521-3773(19990517)38:10<1401::aid-anie1401>3.0.co;2-4
Subject(s) - zinc , catalysis , allene , chemistry , carbonic anhydrase , silicate , primary (astronomy) , methanol , organic chemistry , enzyme , physics , astronomy
There is an astonishing parallel between the mechanism generally accepted for the addition of water to CO 2 catalyzed by the enzyme carbonic anhydrase and the mechanism calculated for the addition of methanol to allene catalyzed by the naturally occurring zinc silicate hemimorphite. The latter reaction was investigated in detail following the observation that hemimorphite as well as an amorphous zinc silicate prepared in situ are excellent heterogeneous catalysts for the addition of primary alcohols to alkynes and allenes [Eq. (1)].