C-13-NMR SPECTRA OF TRIBROMOMETHYLLITHIUM AND 1,1-DIBROMOETHYLLITHIUM

被引：49

作者：

SIEGEL, H

HILTBRUNNER, K

SEEBACH, D

机构：

[1] Laboratorium Für Organische Chemie, Eidgenössischen Technischen Hochschule Zürich, Eth-Zenturm, Zürich, CH-8092

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 1979年 / 18卷 / 10期

关键词：

D O I：

10.1002/anie.197907851

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Unusal bonding in 13C‐labeled Br3CLi 1 is suggested by the 13C‐NMR spectrum at −100°C (THF solution). Shifts and coupling constants indicate three species: 1a with highly polarized BrC bonds; 1b or 1c, distorted as a result of stepwise release of LiBr; and dibromocarbene 1d. 1a and 1b are the first non‐ionized organolithium compounds seen to be monomeric on the NMR time scale. (Figure Presented.) Copyright © 1979 by Verlag Chemie, GmbH, Germany

引用

页码：785 / 786

页数：2

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