Mercury-photosensitized sulfination, hydrosulfination, and carbonylation of hydrocarbons: alkane and alkene conversion to sulfonic acids, ketones, and aldehydes
摘要:
Mercury-photosensitized sulfination of alkanes, RH, with SO2 forms sulfinic acids (RSOOH) and sulfinate esters (RSOOR) in high conversion and yield; oxidation of the mixture produces RSO2OH in high yield. Mercury-photosensitized hydrosulfination of alkenes with H2 and SO2 gives RSO2OH after oxidative workup. Mercury-photosensitized carbonylation of alkanes with CO gives RCHO and R2CO.
Condensation chlorure d'acide-organomagnesien en presence d'halogenure cuivreux: Competition des reactions heterolytique et homolytique. synthese de cetones aliphatiques ramifiees
作者:J.E. Dubois、M. Boussu
DOI:10.1016/0040-4020(73)80220-0
日期:1973.1
hindered acid chlorides RCOCl towards ethylmagnesium bromide in the presence of cuprouschloride has been studied. In addition to the ketones RCOEt, the compounds RCOCOR, RCOR, RR, RH and R(H) are produced by a radical reaction. The condensation of R′MgX with iPr2CHCOCl in the presence of cuprous halide proceeds via alkylcopper species R′Cu.MgXX′ which reacts with the acid chloride to produce the
photoirradiation of a methanolsolution of EuCl3 and alkenes such as cyclohexene, cyclooctene, cyclododecene, and tetramethylethylene afforded (hydroxymethyl) alkane. The dihydro dimer of alkene, hydrogen, and ethylene glycol are also formed. Reactions proceed via a radical mechanism induced by hydrogen atoms and hydroxymethylradicals, which are produced by a photoredox reaction of EuIII/EuII in methanol.