Effective Aerobic Allylic Oxidation of β-ionone and Series of Olefins Catalyzed by Phosphomolybdic Acid
作者:Chang-Hui Liu、Fei Li、Rui-Ren Tang
DOI:10.5012/bkcs.2010.31.6.1723
日期:2010.6.20
attention in both academia and industry due to their unique properties owing to their specific acidity, redox, high reactive selectivity, tunable catalytic ability and environmentally benign and a variety of synthetically useful transformations have been achieved in the oxidation of alco-hols,
Spectroscopic, calorimetric, and catalytic evidences of hydrophobicity on Ti-MCM-41 silylated materials for olefin epoxidations
作者:Joaquín Silvestre-Alberó、Marcelo E. Domine、José L. Jordá、María T. Navarro、Fernando Rey、Francisco Rodríguez-Reinoso、Avelino Corma
DOI:10.1016/j.apcata.2015.09.029
日期:2015.10
the catalytic process. Thus, catalyst deactivation by glycol poisoning of Ti active sites is greatly diminished, this increasing catalyst stability and leading to practically quantitative production of the corresponding epoxide. The extended use of these hydrophobic Ti-MCM-41 catalysts together with organic hydroperoxides for the highly efficient and selective epoxidation of natural terpenes is also
Three different heterocyclic amine additives, pyridine, 3-cyanopyridine and pyrazole are compared in the methyltrioxorhenium (MTO) catalyzed epoxidation of olefins using aqueous hydrogen peroxide. (C) 1999 Elsevier Science Ltd. All rights reserved.
METHOD FOR MANUFACTURING AN EPOXY COMPOUND AND METHOD FOR EPOXIDIZING A CARBON-CARBON DOUBLE BOND
申请人:Takumi Kiyoshi
公开号:US20120108830A1
公开(公告)日:2012-05-03
The present invention provides a method for producing an epoxy compound, comprising oxidizing a carbon-carbon double bond of an organic compound by hydrogen peroxide in the presence of a neutral inorganic salt and a mixed catalyst of a tungsten compound (a), at least one phosphorus compound selected from the group consisting of phosphoric acids, phosphonic acids, and salts thereof (b) and a surfactant (c), and an epoxidizing method comprising oxidizing a carbon-carbon double bond by hydrogen peroxide in the presence of the catalyst and the neutral inorganic salt.
Reaction of oxiranes with lithium: deoxygenation leading to olefins
作者:K.N. Gurudutt、B. Ravindranath
DOI:10.1016/s0040-4039(01)83943-5
日期:——
Mono-, di-, tri- and tetra-substituted epoxides undergo facile deoxygenation yielding olefins when treated with lithium in tetrahydrofuran. Aliphatic epoxides yield olefins with the same stereochemistry as the parent compound.