Understanding the Formation of N-H Tautomers from -Substituted Pyridines: Tautomerization of 2-Ethylpyridine Promoted by Osmium
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- 作者：Marí ; a L. Buil ; Miguel A. Esteruelas ; Karin Garcé ; s ; Montserrat Olivá ; n ; Enrique Oñ ; ate
- 刊名：Journal of the American Chemical Society
- 出版年：2007
- 出版时间：September 12, 2007
- 年：2007
- 卷：129
- 期：36
- 页码：10998 - 10999
- 全文大小：56K
- 年卷期：v.129,no.36(September 12, 2007)
- ISSN：1520-5126
文摘
Reaction of [OsH(
2-H2){2-C,C-
1-N-(CH2=CH-o-C5H4N)}(PiPr3)2]BF4 with benzophenone affords [OsH2{2-C,O-C6H4C(O)Ph}{-C-(HNC5H3Et)}(PiPr3)2]BF4 as a result of the orthometalation of the ketone, the hydrogenation of the vinyl substituent of the pyridine, and its subsequent tautomerization. In acetonitrile, the ketone is released and complex [OsH{-C-(HNC5H3Et)}(NCCH3)(PiPr3)2]BF4 is formed.
2-H2){2-C,C-1-N-(CH2=CH-o-C5H4N)}(PiPr3)2]BF4 with benzophenone affords [OsH2{2-C,O-C6H4C(O)Ph}{-C-(HNC5H3Et)}(PiPr3)2]BF4 as a result of the orthometalation of the ketone, the hydrogenation of the vinyl substituent of the pyridine, and its subsequent tautomerization. In acetonitrile, the ketone is released and complex [OsH{-C-(HNC5H3Et)}(NCCH3)(PiPr3)2]BF4 is formed.