Reactions of thebaine derivatives with trifluoroacetyl acetylenes: [4+2]-addition solely
作者:Irina V. Sandulenko、Daria V. Semenova、Maria V. Zelentsova、Sergey K. Moiseev、Andrey B. Koldobskii、Alexandr S. Peregudov、Ivan S. Bushmarinov、Valery N. Kalinin
DOI:10.1016/j.jfluchem.2016.07.015
日期:2016.9
with trifluoroacetyl acetylenes furnished the [4+2]-adducts solely. The last ones readily rearranged to the corresponding 3H-furo[4,3,2-fg][3]benzazocine derivatives. So, the use of N-acyl-N-northebaines as the starting materials in the reactions with acetylenic dienophiles provides the general methodology to avoid a formation of the undesirable “nucleophilic” adducts typical for the reactions of the
Addition reactions of 1,1,1-trifluoro-4-trimethylstannylbut-3-yn-2-one and 1,1,1-trifluorobut-3-yn-2-one to some tetrahydropyridines. Synthesis of trifluoroacylated polysubstituted tetrahydroazocines
作者:A. B. Koldobskii、E. V. Solodova、V. N. Kalinin
DOI:10.1007/s11172-010-0197-x
日期:2010.5
A reaction of tetrahydropyridines, obtained by the Diels-Alder reaction from α,β-unsat-urated N,N-dimethylhydrazones and methyl acrylate, with acetylenes activated with the trifluoroacetyl group has been studied and found to lead to polysubstituted trifluoroacylated tetrahydroazocines. No cyclobutene intermediates have been detected.
The general approach for the synthesis of substituted cyclobutenyl- and norbornadienyllithiums containing masked trifluoromethyl group
作者:Andrey B. Koldobskii、Ekaterina V. Solodova、Pavel V. Verteletskii、Ivan A. Godovikov、Valery N. Kalinin
DOI:10.1016/j.tet.2010.10.024
日期:2010.12
alpha,beta-Unsaturated trifluoromethylketones of cyclobutene number containing trimethylstannyl substituent in beta-position were firstly prepared by the addition of trimethylstannyllithium to the corresponding trifluoromethylenaminoketones. The protection of carbonyl function under basic conditions conserving the organometallic substituent was elaborated. The generation of corresponding organolithiums by Sn-Li exchange and their reactivity was studied. (C) 2010 Elsevier Ltd. All rights reserved,
Synthesis and Unusual [2 + 2] Cycloaddition Reactions of 1-Trifluoroacetyl-2-haloacetylenes
作者:N. P. Tsvetkov、A. B. Koldobskii、V. N. Kalinin
DOI:10.1007/s10631-005-0065-7
日期:2005.9
Synthesis and properties of 1-trifluoroacetylacetylene
作者:N. P. Tsvetkov、A. B. Koldobskii、I. V. Korznikova、A. S. Peregudov、V. N. Kalinin