Reduction of N-(polychloroethylidene)- and N-(1-hydroxypolychloroethyl) arenesulfonamides with adamantane in the presence of superacids
摘要:
N-(2,2,2-Trichloroethylidene)-, N-(2,2-dichloro-2-phenylethylidene)-, and N-(1-hydroxy-2-polychloroethyl) arenesulfonamides reacted with adamantane in carbon tetrachloride in the presence of oleum or concd. H2SO4-P4O10 mixture to give the corresponding N-(2-polychloroethyl)arenesulfonamides as a result of reduc-tion of the azomethine and OH group, respectively.
New approach to the preparation of p-(1-cyanoethyl)arenesulfonamides by reaction of arylsulfonyl imines of polychloroacetaldehydes with acetone cyanohydrin
作者:A. R. Kaliev、V. Yu. Serykh、I. B. Rosentsveig
DOI:10.1134/s1070428017080061
日期:2017.8
Reaction of N-(2,2,2-trichloroethylidene)- or N-(1-phenyl-2,2-dichloroethylidene)arenesulfonamides with acetonecyanohydrin in acetone in the presence of potassium carbonate led to the formation of N- (2,2,2-trichloro-1-cyanoethyl)- or N-(2-phenyl-2,2-dichloro-1-cyanoethyl)arenesulfonamides.
Two-Step Regioselective Synthesis of 3-(Sulfonylamino)imidazo[1,2-<i>a</i>]pyrimidines from 2-Aminopyrimidines and<i>N</i>-(2,2-Dichloro-2-phenylethylidene)arensulfonamides
作者:Igor B. Rozentsveig、Valery Yu. Serykh、Gulnur N. Chernysheva、Evgeniy V. Kondrashov、Alena I. Fedotova、Igor A. Ushakov、Evgeny V. Tretyakov、Galina V. Romanenko
DOI:10.1002/ejoc.201402695
日期:2014.10
The reaction of 2-aminopyrimidines with N-(2,2-dichloro-2-phenylethylidene)arenesulfonamides affords the corresponding products of nucleophilic addition to the azomethine group, N-[2,2-dichloro-2-phenyl-1-(heterylamino)ethyl]sulfonamides, in good yields. The latter are easily cyclized to give imidazo[1,2-a]pyrimidin-3-ylsulfonamides in the presence of NaOH, whereas the expected isomeric imidazo[1,
Diels–Alder trapping vs. amidoalkylation of cyclopentadiene with polychloroacetaldehyde sulfonylimines
作者:Gulnur N. Chernysheva、Maxim D. Katerinich、Igor A. Ushakov、Igor B. Rozentsveig
DOI:10.1016/j.mencom.2020.09.022
日期:2020.9
The reaction of chloral or dichloro(phenyl)acetaldehyde N-arylsulfonylimines with cyclopentadiene, depending on the reaction conditions, affords either Diels–Alder adducts, 2-arylsulfonyl-2-azabicyclo[2.2.1]hept-5-enes, or unexpectedly new amidoalkylated derivatives of cyclopentadiene, N-[(cyclopentadienyl)(polychloromethyl)methyl]arenesulfonamides.
Regioselective reaction of imidazole-2-thiols with N-sulfonylphenyldichloroacetaldimines: en route to novel sulfonylamino-substituted imidazo[2,1-b]thiazoles and thiazolo[3,2-a]benzimidazoles
The reaction of N-(2,2-dichloro-2-phenylethylidene)arenesulfonamides with 2-mercaptoimidazoles affords N(2-phenylimidazo[2,1-b][1,3]thiazol-3-yl)arenesulfonamides or N-(2-phenyl[1,3]thiazolo[3,2-a]benzimidazol-3yl)arenesulfonamides. Formation of the annulated heterocyclic derivatives is tentatively triggered by a nucleophilic addition of mercaptoimidazole to the activated azomethine group of halogen-containing
Synthesis of new imidazo[2,1-b][1,3]thiazole derivatives from 2-amino-4-(2,2-dichlorovinyl)-1,3-thiazole and N-(2,2-dichloro-2-phenylethylidene)arenesulfonamides
作者:V. Yu. Serykh、G. G. Levkovskaya、A. V. Popov、V. I. Potkin、S. K. Petkevich、A. V. Vashchenko、V. I. Smirnov、I. B. Rozentsveig
DOI:10.1134/s1070428016100171
日期:2016.10
N-[2,2-di(or 2,2,2-tri)chloro-1-(1,3-thiazol-2-ylamino)ethyl]arenesulfonamides in good yields. Intramolecular heterocyclization of the latter afforded N-[3-(2,2-dichloroethyl)-6-phenylimidazo[2,1-b][1,3]thiazol-5-yl]arenesulfonamides.
2-氨基-4-(2,2-二氯乙烯基)-1,3-噻唑与高度亲电的N-(2,2-二氯-2-苯基亚乙基)-和N-(2,2,2-三氯亚乙基)芳烃磺酰胺反应通过环外氨基,得到亲核加成到甲亚胺键的产品,ñ - [2,2-二(或2,2,2-三)氯-1-(1,3-噻唑-2-基氨基)乙基]芳烃磺酰胺,收率高。后者的分子内杂环化得到N- [3-(2,2-二氯乙基)-6-苯基咪唑并[2,1- b ] [1,3]噻唑-5-基]芳烃磺酰胺。