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Indexed by:期刊论文

Date of Publication:2005-08-15

Journal:BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN

Included Journals:SCIE、EI、Scopus

Volume:78

Issue:8

Page Number:1575-1579

ISSN No.:0009-2673

Abstract:A new reaction-controlled phase-transfer catalyst system has been designed and synthesized. In this system, heteropoly blue, [C7H7N(CH3)(3)](3)PMo4O16, is used for the catalytic epoxidation of olefins with H2O2 as the oxidant. In this system, the catalyst not only can be recovered, like heterogeneous catalyst, but also acts as a homogeneous catalyst. The main products are epoxide of olefins and H2O; no co-product forms. The system exhibits high conversion and selectivity as well as excellent catalyst stability. (PNMR)-P-31 spectra, UV-vis spectra, and infrared spectra are used to analyze the reason for the phase transfer of the catalyst, indicating that the change of structure leads to the formation of reaction-controlled phase-transfer catalyst.