Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2005-08-15

Journal: BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN

Included Journals: Scopus、EI、SCIE

Volume: 78

Issue: 8

Page Number: 1575-1579

ISSN: 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.