对三种Grignard试剂与2-溴辛烷在少量二溴化钴存在下的反应作了研究。由有机溴化物衍生的2-辛基在反应条件下大部分(44—58％)歧化,生成辛烷和辛烯的混合物,也有相当一部分(26—35％)形成二聚合的产物。反应的气体产物也经过分析。结果与自由基的鏈式历程相符合。 2-辛基歧化时辛烯生成的量随所用Grignard试剂不同而有所改变。这指出不同烷基之间发生混合歧化作用的可能性。 The reaction of three Grignard reagents with 2-bromooctane in the presence of a small amount of cobalt dibromide was investigated. The 2-octyl group derived from the organic bromides disproportionated mostly (44-58%) under the reaction conditions to produce a mixture of octane and octene, and a considerable portion (26-35%) forms the dimerized product. The gas product of the reaction is also analyzed. The results are consistent with the free radical chain process. The amount of octene produced upon 2-octyl disproportionation varies with the Grignard reagent used. This indicates the possibility of mixed disproportionation between different alkyl groups.