The reaction of thionitrites with barton esters: a convenient free radical chain reaction for decarboxylative nitrosation
作者:Pierre Girard、Nadine Guillot、William B. Motherwell、Robyn S. Hay-Motherwell、Pierre Potier
DOI:10.1016/s0040-4020(98)01164-8
日期:1999.3
Tertiary thionitrite esters react with primary and secondary O-acyl derivatives of N-hydroxy-2-thiopyridone to give trans nitroso dimers as the principal products of a freeradicalchainreaction.
The catalytic decarbonylation reaction of aliphaticcarboxylicacids can be carried out in the presence of an iron complex, and it proceeds smoothly to give alpha-olefins with high selectivity.
Olefin Epoxidation with Bis(trimethylsilyl) Peroxide Catalyzed by Inorganic Oxorhenium Derivatives. Controlled Release of Hydrogen Peroxide
作者:Andrei K. Yudin、Jay P. Chiang、Hans Adolfsson、Christophe Copéret
DOI:10.1021/jo010369m
日期:2001.6.1
using bis(trimethylsilyl) peroxide (BTSP) as oxidant in place of aqueous H(2)O(2). Using a catalytic amount of a proton source, controlled release of hydrogen peroxide helps preserve sensitive peroxorhenium species and enables catalytic turnover to take place. Systematic investigation of the oxorheniumcatalyst precursors, substrate scope, and effects of various additives on olefinepoxidation with
here for the first time are the developments of an efficient method for oxidativecleavage of carbon−carbon double bonds yielding carbonyl compounds by using aryl-λ3-iodanes, which involve a combination of iodosylbenzene and HBF4 in the presence of water. The method serves as a safety alternative to ozonolysis. The oxidativecleavage of olefins probably involves the hitherto unknown direct vicinal dihydroxylations