Synthesis of indolizine derivatives by the reaction of 2-(2′-pyridyl)-pyridinium ylides with ethylenic dipolarophiles
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.
Synthesis of indolizine derivatives by the reaction of 2-(2′-pyridyl)-pyridinium ylides with ethylenic dipolarophiles
作者:Ioan I. Druta、Mioara A. Andrei、Cristian I. Ganj、Pompiliu S. Aburel
DOI:10.1016/s0040-4020(99)00798-x
日期:1999.11
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.