First Unambiguous Characterization of a Novel RO-BH2 Intermediate by 1H{11B} and 1H{13C,11B} NMR Spectroscopy. Proof of Boron−C
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- 作者：Shahid Islam ; Syarhabil Ahmad ; Tina Liu ; F. Holger Fö ; rsterling ; M. Mahmun Hossain
- 刊名：Organometallics
- 出版年：2008
- 出版时间：May 26, 2008
- 年：2008
- 卷：27
- 期：10
- 页码：2354 - 2355
- 全文大小：67K
- 年卷期：v.27,no.10(May 26, 2008)
- ISSN：1520-6041
文摘
An unusual reduction of the aryl-substituted 3-hydroxyacrylic acid ester 1 by BH3 results in the propenoic acid ethyl ester 3. We were able to prove the presence of an intermediate 2 containing a cyclic O-BH2 ← O
C< moiety in 2 by using 1H−11B and 1H−13C{11B} NMR correlation experiments.
C< moiety in 2 by using 1H−11B and 1H−13C{11B} NMR correlation experiments.