Dimethyl sulfoxide-hydrobromic acid as a novel reagent for convenient oxidation on a preparative scale of stilbenes and some derivatives of diphenylethane to benzils
摘要:
We have found that the systems HBr-H2O2-DMSO and HBr-DMSO are mild and selective reagents for the high-yield oxidation of the C = C bond in stilbenes to benzils. These reagents also successfully oxidate 1,2-diphenyl-1,2-dibromoethane and a number of its derivatives to benzils. We have evaluated the preparative potentialities of the novel reagents.
A simple and efficient bromoformyloxylation and bromoacetoxylation reaction using TsNBr2
摘要:
Bromoformyloxylation and bromoacetoxylation of olefins proceed smoothly and instantaneously in the presence of N,N-dibromo-p-toluene sulfonamide without any catalyst. The one step reactions can be carried out with all kinds of olefins in high yield and high regio and stereoselectivities. (C) 2011 Elsevier Ltd. All rights reserved.