| 2-硅萘与乙烯和四氰基乙烯杂iDels-Alder反应的理论研究 |
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| 引用本文： | 曾小兰,熊小琴,王岩,杨玉忠.2-硅萘与乙烯和四氰基乙烯杂iDels-Alder反应的理论研究[J].信阳师范学院学报(自然科学版),2011,24(2):205-208. |
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| 作者姓名： | 曾小兰 熊小琴 王岩 杨玉忠 |
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| 作者单位： | 信阳师范学院化学化工学院,河南信阳,464000 |
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| 基金项目： | 河南省基础与前沿技术研究计划项目，信阳师范学院青年骨干教师计划资助项目 |
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| 摘 要： | 采用密度泛函理论(DFT)方法在B3LYP/6-311G(d,p)水平上研究2-硅萘与乙烯和四氰基乙烯的杂D iels-A lder反应的微观机理和势能剖面,考察反应的取代基效应和溶剂效应.计算结果表明,所研究反应均以协同非同步的方式进行.乙烯分子中碳原子上的吸电子基团对反应活化能垒的影响取决于2-硅萘中硅上所连接基团的类型.2-硅萘分子中硅原子上的C(CH3)3取代基对反应势能剖面的影响比较小,而其上的CC l3和NH2取代基对反应势能剖面的影响则与亲二烯体分子中碳原子上的取代基的类型有关.苯溶剂对所研究反应的势能剖面影响不大.2-硅萘作为杂二烯烃参与杂D iels-A lder反应的反应性远低于硅苯.
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| 关 键 词： | 2-硅萘 乙烯 四氰基乙烯 杂Diels-Alder反应 密度泛函理论 |
Theoretical Studies on the Hetero-Diels-Alder Reactions of 2-Silanaphthalenes with Ethylene and Tetracyanoethylene |
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| ZENG Xiao-lan,XIONG Xiao-qin,WANG Yan,YANG Yu-zhong.Theoretical Studies on the Hetero-Diels-Alder Reactions of 2-Silanaphthalenes with Ethylene and Tetracyanoethylene[J].Journal of Xinyang Teachers College(Natural Science Edition),2011,24(2):205-208. |
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| Authors: | ZENG Xiao-lan XIONG Xiao-qin WANG Yan YANG Yu-zhong |
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| Institution: | ZENG Xiao-lan,XIONG Xiao-qin,WANG Yan,YANG Yu-zhong (College of Chemistry and Chemical Engineering,Xinyang Normal University,Xinyang 464000,China) |
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| Abstract: | The mechanism,potential energy surface,substituent effect and solvent effect of hetero-Diels-Alder reactions of 2-silanaphthalenes with ethylene and tetracyanoethylene were investigated using density functional theory(DFT) calculation at the B3LYP/6-311G(d,p) level of theory.The results show that all of studied reactions proceed in a concerted but nonsynchronous way.The influence of electron-withdrawing group at C atoms of ethylene on the activation barrier is determined by the type of substituents at Si at... |
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| Keywords: | 2-silanaphthalenes ethylene tetracyanoethylene hetero-Diels-Alder reaction density functional theory |
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