TRANSMISSION OF ELECTRONIC EFFECTS THROUGH 2-[DONOR]-1-[ACCEPTOR]-CYCLOPROPANE

被引：3

作者：

ALONSO, ME ^{[1
]}

PEKERAR, SV ^{[1
]}

BORGO, ML ^{[1
]}

机构：

[1] INST VENEZOLANO INVEST CIENT, CTR QUIM, CARACAS 1010A, VENEZUELA

来源：

MAGNETIC RESONANCE IN CHEMISTRY | 1990年 / 28卷 / 11期

关键词：

!sup]13[!/sup]C NMR; !sup]1[!/sup]H NMR; Cyclopropane; Through‐the‐ring conjugation;

D O I：

10.1002/mrc.1260281110

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The through‐ring conjugation between π‐donor and attractor substitutents on vicinal carbons of cyclopropane with the direct participation of the ring was assessed using proton and 13C NMR. Appropriate 1H NMR correlations were obtained between σp and δH of the trimethylene protons. However, aryl through‐space field effects were found to obscure individual conjugative effects. Conversely, the 13C NMR data implied the occurrence of competitive conjugation of π‐groups with the ring but gave no proof for the existence of the actual transmission of conjugative effects through the C‐1–C‐2 bond of the ring. Copyright © 1990 John Wiley & Sons, Ltd.

引用

页码：956 / 962

页数：7

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