作者:Zbigniew florjańczyk、Ewa Szymańska-Zachara
DOI:10.1016/0022-328x(83)87156-3
日期:1983.12
obtained in the reactions of chlorine derivatives of 1,4-benzo-quinone. The results are discussed in terms of a radical mechanism involving a homolytic cleavage of the AlC bond in the donor-acceptor complex formed between the reactants followed by combination of alkyl radicals and aluminium derivatives of semiquinone within a cage. The stable donor-acceptor complexes and aluminium derivative of semiquinone
乙基,正丁基和异丁基铝二氯化物经历1,6-除了共轭键体系OCCCCO第-醌,二氯化甲基铝是不活泼的,三乙基铝的收率很低。醌的反应性随其电子极限而变化,并且在1,4-苯并醌的氯衍生物的反应中获得最高的1,6-加成产率。根据自由基机理对结果进行了讨论,该机理涉及在反应物之间形成的供体-受体络合物中AlC键的均相裂解,然后在笼中结合烷基和半醌的铝衍生物。从三氯化铝与2,3,5,6-四甲基-1,4-苯醌和2,3,5,6-四氯-1,分别为4-苯醌。