The invention of radical reactions. Part XXXI. Diphenylsilane: a reagent for deoxygenation of alcohols via their thiocarbonyl derivatives, deamination via isonitriles, and dehalogenation of bromo- and iodo- compounds by radical chain chemistry
作者:Derek H.R. Barton、Doo Ok Jang、Joseph Cs. Jaszberenyi
DOI:10.1016/s0040-4020(01)87198-2
日期:1993.8
Various thionocarbonates and xanthates of alcohols and bis-xanthates of vic-diols are readily deoxygenated to the corresponding hydrocarbons or olefins, while bromides and iodides are dehalogenated with diphenylphenylsilane in good yield.
作者:Derek H.R. Barton、Doo Ok Jang、Joseph Cs. Jaszberenyi
DOI:10.1016/s0040-4039(00)78787-9
日期:1991.6
Dixanthates, formed from vic-diols, can easily be transformed to the corresponding olefins with diphenylsilane in a new, high-yielding radical reaction.
The invention of radical reactions. Part XXIX. Radical mono- and dideoxygenations with silanes
作者:Derek H.R. Barton、Doo Ok Jang、Joseph Cs. Jaszberenyi
DOI:10.1016/s0040-4020(01)80380-x
日期:1993.4
Thionocarbonates and xanthates of primary and secondary alcohols, as well as bis-xanthates of vic-diols are readily deoxygenated to the corresponding hydrocarbons or olefins with phenylsilane, triphenylsilane, and triethylsilane in good yield.
Radical mono- and dideoxygenations with the triethylsilane + benzoyl peroxide system.
作者:Derek H.R. Barton、Doo Ok Jang、Joseph Cs. Jaszberenyi
DOI:10.1016/0040-4039(91)80472-i
日期:1991.12
Thionocarbonates and xanthates of primary and secondary alcohols, as well as dixanthates of vic-diols can easily be deoxygenated to the corresponding hydrocarbons or olefins with triethylsilane and benzoyl peroxide in high-yielding radical reactions.
The invention of radical reactions. Part 32. Radical deoxygenations, dehalogenations, and deaminations with dialkyl phosphites and hypophosphorous acid as hydrogen sources
作者:Derek H. R. Barton、Doo Ok Jang、Joseph C. Jaszberenyi
DOI:10.1021/jo00076a054
日期:1993.11
Reagents, containing a P-H bond, such as dimethyl phosphite, diethyl phosphite, hypophosphorous acid and various salts of hypophosphorous acid are effective radical reducing agents for organic halides, thionoesters, and isocyanides affording high yields of the corresponding hydrocarbons. Reduction of tertiary phenyl selenides and tertiary nitro compounds are not efficient under these conditions. Olefination of 1,2-diols is also accomplished via the corresponding thiocarbonyl derivatives using hypophosphorous acid and triethylamine in the presence of a suitable ''sacrificial olefin'' in moderate to good yields.