EVALUATION OF ADDITION RATES OF THE THIYL RADICALS TO VINYL MONOMERS BY FLASH-PHOTOLYSIS .2. SUBSTITUENT EFFECT ON ADDITION OF SUBSTITUTED BENZENETHIYL RADICALS TO METHYL-METHACRYLATE OR STYRENE
EVALUATION OF ADDITION RATES OF THE THIYL RADICALS TO VINYL MONOMERS BY FLASH-PHOTOLYSIS .2. SUBSTITUENT EFFECT ON ADDITION OF SUBSTITUTED BENZENETHIYL RADICALS TO METHYL-METHACRYLATE OR STYRENE
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DOI：
10.1021/ja00513a045
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发表时间：
1979-01-01
影响因子：
15
通讯作者：
MATSUDA, M
中科院分区：
文献类型：
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作者：
ITO, O;MATSUDA, M
美国化学学会杂志/101：19/9月12日，979硅胶(正己烷/苯：80/20)。硫醇用乙醚提取，二氯甲烷用索氏萃取器提取。用氢化三氯甲烷代替溶剂，加入0.55 mg的呋喃甲腈，样品用1H核磁共振进行分析。测定了2.85(一个硫醇异构体的甲基质子)、0.55(两个硫醇的甲基质子)、0.32(两个硫醇的环丙基质子)和6.15(富马腈的质子)的峰面积。硫醇的摩尔比为3：1，生成硫醇的量子产率下限为0.03。
5732 Journal of the American Chemical Society/101: 19/September 12,¡ 979 chromatographed over silica gel (hexane/benzene: 80/20). The thiols were extracted with ethyl ether and dichloromethane with a Soxhlet extractor. The solvent was replaced by deuteriated chloroform, fu-maronitrile (0.55 mg) added, and the sample was analyzed by 1H NMR. The areas of peaks 2.85 (methine proton of one thiol isomer), 0.55 (methyl protons of both thiols), 0.32 (cyclopropyl protons of both thiols), and 6.15 (protons of fumaronitrile) were measured carefully. The ratio of the thiols were found to be 3: 1, and thelower limit of quantum yield of formation of thiols was 0.03.