Reaction of N-sulfonyl-1,4-benzoquinone imines with enamines
作者:S. A. Konovalova、A. P. Avdeenko、V. V. Pirozhenko、A. L. Yusina、G. V. Palamarchuk、S. V. Shishkina
DOI:10.1134/s1070428017040054
日期:2017.4
4-benzoquinone imine reacted with enamines to give 1,4-addition products and products of their subsequent cyclization, substituted 5-aminobenzofurans and 5-aminoindoles, depending on the solvent nature, electron-withdrawing power of the substituent on the quinone imine nitrogen atom, and enamine structure. The presence of strong electron-withdrawing trifluoromethanesulfonyl group on the quinone imine nitrogen
Reactions of N-aryl(methyl, trifluoromethyl)sulfonyl-1,4-benzoquinone monoimines with sodium sulfinates
作者:A. P. Avdeenko、S. A. Konovalova、O. N. Mikhailichenko、S. V. Shelyazhenko、V. V. Pirozhenko、L. M. Yagupol’skii
DOI:10.1134/s107042801202011x
日期:2012.2
In reactions with sodium sulfinates of N-substituted 1,4-benzoquinone monoimines with the quinoid ring having free positions 2 and/or 6 the fraction of products of 1,4-addition of the sulfinate ion grows in the series ArSO2 -> MeSO2 -> CF3SO2. In the case of 2,6-dimethyl derivatives the 1,6-addition is preferable, and the amount of products of 6,1-addition decreases.
Synthesis and thiocyanation of N-alkyl(trifluoromethyl)sulfonyl 1,4-benzoquinone monoimines
作者:A. P. Avdeenko、S. A. Konovalova、O. N. Mikhailichenko、S. V. Shelyazhenko、V. V. Pirozhenko、L. M. Yagupol’skii
DOI:10.1134/s1070428011040075
日期:2011.4
New N-alkyl(trifluoromethyl)sulfonyl 1,4-benzoquinone monoimines were synthesized, and their thiocyanation gave 5-alkyl(trifluoromethyl)sulfonylamino-1,3-benzoxathiol-2-ones. An intermediate thiocyanation product, 5-trifluoromethylsulfonylamino-1,3-benzoxathiol-2-imine, was isolated for the first time.