Understanding the formation of N-H tautomers from α-substituted pyridines:: Tautomerization of 2-ethylpyridine promoted by osmiurn

被引:66
作者
Buil, Maria L. [1 ]
Esteruelas, Miguel A. [1 ]
Garces, Karin [1 ]
Olivan, Montserrat [1 ]
Onate, Enrique [1 ]
机构
[1] Univ Zaragoza, CSIC, Inst Ciencia Mat Aragon, Dept Quim Inorgan, E-50009 Zaragoza, Spain
关键词
ELONGATED DIHYDROGEN COMPLEXES; HETEROCYCLIC CARBENE; BOND ACTIVATION; REGIOSELECTIVE ACYLATION; AROMATIC KETONES; H-2; UNIT; LIGAND; C(SP(2))-H; REDUCTION; RUTHENIUM;
D O I
10.1021/ja073673r
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Reaction of [OsH((eta)2-H-2){(eta)2-C,C-kappa(1)-N-(CH2=CH-o -C5H4N)} (P-i Pr-3)(2)]BF4 with benzophenone affords [OsH2{kappa(2)-C,O-C6H4C(O)Ph}{kappa-C-(HNC5H3Et)}(P-i Pr-3)(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{kappa-C-(HNC5H3Et)}(NCCH3) (P-i Pr-3)(2)]BF4 is formed.
引用
收藏
页码:10998 / +
页数:3
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