Hydrogen-Bond Acceptance of Bifunctional Ligands in an Alkyne-Metal Complex

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• 作者：Douglas B. Grotjahn ; Valentí ; n Miranda-Soto ; Elijah J. Kragulj ; Daniel A. Lev ; G&uuml ; lin Erdogan ; Xi Zeng ; Andrew L. Cooksy
• 刊名：Journal of the American Chemical Society
• 出版年：2008
• 出版时间：January 9, 2008
• 年：2008
• 卷：130
• 期：1
• 页码：20 - 21
• 全文大小：69K
• 年卷期：v.130,no.1(January 9, 2008)
• ISSN：1520-5126

文摘

Experiment and theory have been used to study reactive alkyne complexes, intermediates in anti-Markovnikov alkyne hydration by CpRu bis(phosphine) catalysts with heterocyclic substituents. Each heterocycle accepts a hydrogen bond from an acetylene C-H, as revealed by NMR coupling constants between alkyne ¹³C and ¹H nuclei as well as between alkyne ¹³C and pyridine ¹⁵N (^2hJ_CN). Moreover, further alkyne transformations occur at temperatures from 50 to 90 C below what is needed to convert a control compound without the heterocycles.