Application of long-range shielding in 13C NMR to (Z)-(E) assignments in substituted ethylenes.

Application of long-range shielding in 13C NMR to (Z)-(E) assignments in substituted ethylenes.
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长程屏蔽在取代乙烯中 (Z)-(E) 配位的 13C NMR 中的应用。

DOI:
10.1016/s0040-4039(01)97335-6
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发表时间:
1971
影响因子:
1.8
通讯作者:
L. J. M. Ven
L. J. M. Ven
中科院分区:
化学4区
文献类型:
--
作者:
J. Haan;L. J. M. Ven

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用~(13)C NMR化学位移预测了4,4-二甲基-2-戊烯、2,2-二甲基-3-己烯和2,4-己二烯等13种二取代和三取代乙烯的Z构型和E构型。Z乙烯在相对于13 CS2更高的场下具有aC信号,比相应E乙烯的aC信号高。[on Scientists(R)]
The 13C NMR chem. shifts were used to predict the Z and E configurations of 13 di-and trisubstituted ethylenes including 4, 4-dimethyl-2-pentene, 2, 2-dimethyl-3-hexene, and 2, 4-hexadiene. The Z ethylenes had aC signals at higher fields relative to 13CS2 than the aC of the corresponding E ethylenes.[on SciFinder (R)]