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刘云浦与魏天骥二氏(21)对三甲基代乙烯与甲乙基代乙烯在含盐的溶液中与在水中的活泼系数与水化速度,曾藉其在CCl_4与在含KNO_3的水中分配常数的测定而求得之。并发现此两种化合物活泼系数之比与水化速度之比,均隨KNO_3的离子强度增加而增大,但后者增大更为迅速。袁翰青与曹谟二氏曾想用阿尔曼反应(Ull-mann reaction)制备2,2′—二溴—4.4′—二甲基—6,6′—二硝基联苯(22),所得结果不完全正常。袁氏等使3—溴—4碘—5—硝基甲苯(A)与铜起
Liu Yunpu and Wei Tianji Er Shi (21) of trimethylvinylidene and methyl ethyl vinyl ethylene in salt solution with the active factor in the water and the rate of hydration, had by its CCl_4 and KNO_3-containing water in the distribution of constants Determination and obtained. It was found that the ratio of the active coefficients of these two compounds to the hydration rate increased with increasing ionic strength of KNO3, but the latter increased more rapidly. Yuan Hanqing and Cao Moji had wanted to use 2,2’-dibromo-4,4’-dimethyl-6,6’-dinitrobiphenyl (22) by the Ullmann reaction. The results Not completely normal. Yuan et al 3-bromo-4 iodine-5-nitrotoluene (A) and copper from