DETERMINATION OF 3-BOND H-1, H-1 COUPLING-CONSTANTS BETWEEN THE OLEFINIC PROTONS IN CYCLOALKENES BY MEANS OF H-1 CW OFF-RESONANCE C-13 NMR-SPECTROSCOPY

被引:8
|
作者
RADEGLIA, R
POLESCHNER, H
HAUFE, G
机构
[1] UNIV POTSDAM,KAI EV,PROJEKTGRP NATURSTOFFE,O-1532 KLEINMACHNOW,GERMANY
[2] UNIV MUNSTER,INST ORGAN CHEM,W-4400 MUNSTER,GERMANY
关键词
OFF-RESONANCE; 2ND-ORDER EFFECTS; VICINAL H-1; H-1 COUPLING CONSTANTS; (E)/(Z) CONFIGURATION OF DOUBLE BONDS; CYCLOALKENES;
D O I
10.1002/mrc.1260310706
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The H-1 CW off-resonance decoupled C-13 NMR spectra of (E)- and (Z)-cycloalkenes (C5-C-12) were measured. The higher order C-13 NMR multiplets obtained for the unsaturated carbons allow the determination of the vicinal H-1,H-1 coupling constant between the vinylic protons and thus the assignment of the configuration of the -CH2CH=CHCH2- fragment.
引用
收藏
页码:639 / 641
页数:3
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