| 胡椒基类化合物与苯醌光反应的CIDNP研究 |
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| 引用本文： | 王婷,严宝珍.胡椒基类化合物与苯醌光反应的CIDNP研究[J].北京化工大学学报(自然科学版),2001,28(3):72-75. |
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| 作者姓名： | 王婷 严宝珍 |
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| 作者单位： | 北京化工大学理学院, 北京 100029 |
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| 基金项目： | 国家自然科学基金;29975002; |
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| 摘 要： | 光照的1H化学诱导动态核极化(CIDNP)技术用于研究胡椒基类化合物与苯醌的光化反应。Photo-CIDNP谱上胡椒基的亚甲基质子(—O—CH2—O—)在氘乙腈中产生发射极化信号,在氘苯中产生增强吸收信号,证实了在乙腈和苯中分别形成“溶剂分离离子化自由基对(SSIP)”和中性的半醌-苯并间二氧杂环戊烯自由基对(RP)。在氘苯中,产物三苯基原甲酸酯衍生物的次甲基质子的异常增强吸收,表明该产物由中性自由基对(RP)形成。
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| 关 键 词： | CIDNP 胡椒基类化合物 苯醌 自由基反应 电子受体 光反应 |
| 收稿时间： | 2000-12-12 |
| 修稿时间： | 2000年12月12日 |
Investigation of photochemical reaction of benzodioxoles and benzoquinone(BQ) by CIDNP |
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| WANG Ting,YAN Bao,zhen.Investigation of photochemical reaction of benzodioxoles and benzoquinone(BQ) by CIDNP[J].Journal of Beijing University of Chemical Technology,2001,28(3):72-75. |
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| Authors: | WANG Ting YAN Bao zhen |
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| Institution: | College of Science ,Beijing University of Chemical Technology , Beijing 100029 , China |
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| Abstract: | Photochemical reactions of benzodioxoles with benzoquinone (BQ) was investigated by photo CIDNP technique. Photo CIDNP measurements showed that solvent separated ion radical pairs (SSIP) were formed in acetonitrile and neural semiquinone benzodioxolyl radical pairs (RP) were formed in benzene as evidenced by the emissive and abnormally enhanced absorptive polarizations of methylenedioxy protons (-O-CH 2-O-)in the regenerated benzodioxoles in CD 3CN and C 6D 6, respectively. Abnormally enhanced absorptions for the methine proton in products of triaryl orthoformate derivatives were also observed in C 6D 6, indicating the formation of the product resulted in radical pair (RP) intermediate. |
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| Keywords: | CIDNP benzodioxoles benzoquinone free radical reaction |
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