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Some interesting CH 2CH (3) spin systems in several diethyl malonate indene derivatives studied with NMR and molecular modeling
Zhang Long1; He WeiWei1; Liang YongMin2; Cui YuXin1
关键词Electrophilic Cyclization Spin-spin Coupling Signal Multiplicity Molecular Modeling Spin System Aromatic Ring
刊名SCIENCE IN CHINA SERIES B-CHEMISTRY
2009-07-01
DOI10.1007/s11426-009-0032-0
52期:7页:937-942
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Chemistry, Multidisciplinary
研究领域[WOS]Chemistry
关键词[WOS]CYCLIZATION
英文摘要

While studying the electrophilic cyclization of acetylenic malonates in synthesizing malonate indene derivatives with high regio and stereo-selectivity, we found that the CH2 and CH3 protons of two COOCH2CH3 groups in some diethyl malonate indene derivatives showed very interesting spin-spin coupling and signal multiplicity. To explain those phenomena, we synthesized several diethyl malonate indene derivatives, and then used H-1 NMR spectra and molecular modeling to investigate the CH 2CH (3) spin system of these two COOCH2CH3 groups in detail. The results showed that the spin systems of CH 3CH (2) of the two COOCH2CH3 groups in those compounds may exist in different froms (AMX (3), ABX (3) and A (2) X (3)), and the effect of the aromatic ring induced by the phenyl group at the end of the triple bond is the main reason responsible for those phenomena.

语种英语
WOS记录号WOS:000267396300014
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/54040
专题北京大学药学院
北京大学第三临床医学院_介入血管外科
作者单位1.Peking Univ, Sch Pharmaceut Sci, State Key Lab Nat & Biomimet Drugs, Beijing 100191, Peoples R China
2.Lanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714
Zhang Long,He WeiWei,Liang YongMin,et al. Some interesting CH 2CH (3) spin systems in several diethyl malonate indene derivatives studied with NMR and molecular modeling[J]. SCIENCE IN CHINA SERIES B-CHEMISTRY,2009,52(7):937-942.
APA Zhang Long,He WeiWei,Liang YongMin,&Cui YuXin.(2009).Some interesting CH 2CH (3) spin systems in several diethyl malonate indene derivatives studied with NMR and molecular modeling.SCIENCE IN CHINA SERIES B-CHEMISTRY,52(7),937-942.
MLA Zhang Long,et al."Some interesting CH 2CH (3) spin systems in several diethyl malonate indene derivatives studied with NMR and molecular modeling".SCIENCE IN CHINA SERIES B-CHEMISTRY 52.7(2009):937-942.
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