作者:B. A. Trofimov、Z. V. Stepanova、L. N. Sobenina、A. I. Mikhaleva、T. I. Vakul'skaya、V. N. Elokhina、I. A. Ushakov、D. -S. D. Toryashinova、E. I. Kositsyna
DOI:10.1007/bf02496409
日期:1999.8
The reactions of substituted pyrroles with terminal acylacetylenes occur selectively to form 2-(Z/E-2-acylvinyl)pyrroles. When the reactions are performed on the surface of silica gel, C-vinylation is noticeably accelerated to form predominantly E-isomers. ESR spectroscopy with the use of a spin trap demonstrated the ion-radical character of the process. The structures of the adducts synthesized, which exist as anti-s-cis- and syn-s-cis-rotamers, were studied by IR, UV, and NMR spectroscopy.