作者:Swee Hock Goh、Toh Seok Kam
DOI:10.1039/p19810000423
日期:——
A comparative study of the reactions of substituted 4-nitrobenzylidene dichlorides ArCHCl2(Ar = 3-Cl-4-NO2C6H3, 2-Cl-4-NO2C6H3, 4-NO2C6H4, 3,5-Me2-4-NO2C6H2, and 2-Me-4-NO2C6H3) with aqueous alcoholic alkali shows that chlorine substitution enhances the electron-transfer-radical mechanism, whereas methyl substitution favours the solvolysis pathway. Changes in reactivity and mechanism are discussed
取代的4-硝基亚苄基二氯化物ArCHCl 2(Ar = 3-Cl-4-NO 2 C 6 H 3,2 -Cl-4-NO 2 C 6 H 3,4 -NO 2 C 6 H含4,3,5-Me 2 -4-NO 2 C 6 H 2和2-Me-4-NO 2 C 6 H 3)的水溶液表明,氯取代增强了电子转移自由基的机理,而甲基取代有利于溶剂分解途径。讨论了反应性和机理的变化。