A process for the preparation of a straight-chain or branched alkene which has 20 to 24 carbon atoms and in which the ethylenic bond is located after a carbon atom numbered between 8 and 11, which process comprises reacting, in an anhydrous solvent, preferably in an oxahydrocarbon an organometallic copper compound with an alkyl or alkenylsulfonate.
A cobalt-catalyzed decarboxylative methylation of aliphatic redox-active esters [N-(acyloxy)phthalimides; RAEs] with trimethylaluminum under mild conditions was developed, providing a method for transforming a carboxylate group into a methyl group without redox fluctuation. Primary and secondary RAEs were both amenable substrates, whereas a tertiary RAE delivered an elimination product. Triethylaluminum
脂肪族氧化还原活性酯 [N-(酰氧基)邻苯二甲酰亚胺;RAEs] 与三甲基铝在温和条件下的开发,提供了一种将羧酸盐基团转化为甲基基团而没有氧化还原波动的方法。一级和二级 RAE 都是适合的底物,而三级 RAE 提供消除产物。三乙基铝也用于提供脱羧乙基化产物。