Synthesis and study of the rearrangements of 5-(1,2,3-triazol-4-yl)-1,2,3-thiadiazoles
作者:Vasiliy A Bakulev、Evgeniy V Tarasov、Yury Yu Morzherin、Ingrid Luyten、Suzanne Toppet、Wim Dehaen
DOI:10.1016/s0040-4020(98)00449-9
日期:1998.7
A method for the synthesis of heterocyclic ring conjugates containing 1,2,3-thiadiazole and 1,2,3-triazole nuclei was elaborated. The mechanism of rearrangement (effect of substituents and solvents) was investigated by NMR spectroscopy. A novel domino-type rearrangement involving both heterocycles was discovered. (C) 1998 Elsevier Science Ltd. All rights reserved.
Tarasov, Evgeny V.; Morzherin, Yury Yu.; Toppet, Suzanne, Journal of Chemical Research, Miniprint, 1997, # 11, p. 2472 - 2485
作者:Tarasov, Evgeny V.、Morzherin, Yury Yu.、Toppet, Suzanne、Dehaen, Wim、Bakulev, Vasiliy A.
DOI:——
日期:——
Synthetic and Theoretical Aspects of New Dimroth Rearrangement of6-Aminopyran-2-ones to 6-Hydroxypyridin-2-ones via Carbamoyl Ketenes
作者:Julia O. Subbotina、Walter M. F. Fabian、Evgeniy V. Tarasov、Natalia N. Volkova、Vasiliy A. Bakulev
DOI:10.1002/ejoc.200400875
日期:2005.7
ide 4b, were observed. The first one represents a new, Dimroth-type rearrangement and proceeds by thermal opening of the pyrane ring, followed by the simultaneous rotational isomerization of the ketene intermediate 7 (s-cis) to 7 (s-trans) and its recyclization onto the amido group to form the pyridin-2-one cycle.The first step of the rearrangement has a calculated [B3LYP/6-31G(d)] activation barrier