A Novel Method for the Preparation of Acid-Sensitive Epoxides from Olefins with the Combined Use of Molecular Oxygen and Aldoacetal Catalyzed by a Cobalt(II) Complex
An efficient synthesis of acid-sensitive epoxides, such as chromene oxide or epoxide of γ,δ-unsaturated alcohol, was successfully achieved by the oxygenation of corresponding olefins with the combined use of an atmospheric pressure of molecular oxygen and aldoacetal catalyzed by a cobalt(II) complex coordinated with the 1,3-diketone ligand. The reactions proceeded under mild and neutral conditions
Structural effects in solvolytic reactions. 49. Steric effects as a major factor in the exo:endo rate ratios for the solvolysis of 2,7,7-trimethyl- and 2,6,6-trimethyl-2-norbornyl p-nitrobenzoates
作者:Herbert C. Brown、Shiro Ikegami、David L. Vander Jagt
DOI:10.1021/jo00208a004
日期:1985.4
Tropospheric OH formation by ozonolysis of terpenes
作者:T. Pfeiffer、O. Forberich、F.J. Comes
DOI:10.1016/s0009-2614(98)01208-1
日期:1998.12
The formation of hydroxyl radicals in the reaction of ozone with a number of monoterpenes has been searched for under true atmospheric conditions. In all cases OH is produced showing efficiencies in some cases approaching unity, that is for each ozone molecule that reacts about one OH molecule is detected. This observation makes the ozonolysis of the monoterpenes a significant source of OH in the troposphere, which competes under favourable conditions with the radiation-based production via ozone photolysis in the presence of water vapor. Another product formed in this reaction which has been observed simultaneously with OH is formaldehyde. (C) 1998 Elsevier Science B.V. All rights reserved.
SATTERWHITE, D. MICHAEL;CROTEAU, RODNEY B., J. CHROMATOGR., 407,(1987) 243-252