The invention of new radical chain reactions. Part VIII. Radical chemistry of thiohydroxamic esters; A new method for the generation of carbon radicals from carboxylic acids
作者:Derek H.R. Barton、David Crich、William B. Motherwell
DOI:10.1016/s0040-4020(01)97173-x
日期:1985.1
by tributylstannane in a radical chain reaction to furnish nor-alkanes.1 In the absence of the stannane a smooth decarboxylatlive rearrangement occurs to give 2-substituted thiopyridines.1 The radicals present in this reaction provoke with -butylthiol an efficient radical reaction with formation of nor-alkane and 2-pyridyl--butyl disulphide.1Similarly these carbon radicals can be captured by halogen
N-羟基吡啶-2-硫酮的脂族和脂环族酯很容易在自由基链反应中被三丁基锡烷还原以提供正烷烃。1在不存在锡烷的情况下,会发生平滑的脱羧latlive重排,从而生成2-取代的硫代吡啶。1该反应中存在的自由基与-丁基硫醇一起引发有效的自由基反应,形成正构烷烃和2-吡啶基-丁基二硫化物。1类似地,这些碳自由基可通过卤素原子转移而捕获,得到正烷基氯化物,溴化物和碘化物。2在叔丁基硫醇的存在下,用氧气在另一个自由基链反应中形成相应的正烷基氢过氧化物。3