Synthesis of indolizine derivatives by the reaction of 2-(2′-pyridyl)-pyridinium ylides with ethylenic dipolarophiles

被引:30
作者
Druta, II [1 ]
Andrei, MA [1 ]
Ganj, CI [1 ]
Aburel, PS [1 ]
机构
[1] Al I Cuza Univ, Dept Organ Chem, Iasi 6600, Romania
关键词
2,2 '-bipyridyl; 2-(2 '-pyridyl)-piridinium ylides; indolizines; cycloaddition reaction;
D O I
10.1016/S0040-4020(99)00798-X
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The reaction of 2-(2'-pyridyl)-pyridinium N-ylides with substituted ethylenes such as acrylonitrile and ethyl acrylate gave the corresponding tetrahydroindolizine derivatives in high yields. Tetrahydroindolizine derivatives were dehydrogenated by treating with tetrapyridinecobalt(II) bichromate [CoPy4(HCrO4)(2)] to give aromatic indolizines bearing cyano, aroyl, 2'-pyridyl, ester group at the different positions. Seventeen new indolizine derivatives were prepared. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:13063 / 13070
页数:8
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