Halogenation of N-substituted para-quinone monoimine and para-quinone monooxime esters: V. Chlorination and bromination of N-arylsulfonyl-1,4-benzoquinone monoimines dialkyl-substituted in the quinoid ring
摘要:
The direction of halogen addition to N-arylsulfonyl-1,4-benzoquinone monoimines dialkyl-substituted in the quinoid ring is governed by the steric factors: the size and position of the substituent, the halogen volume, and the position of the substituent at the nitrogen. The first stage of halogenation of N-arylsulfonyl-4-aminophenols with two alkyl substituents in the phenylsulfonyl ring largely occurs as electrophilic substitution.
Reaction of N-sulfonyl derivatives of 1,4-benzoquinone monoimine with substituted hydrazines
作者:S. A. Konovalova、A. P. Avdeenko、S. A. Goncharova、V. V. D’yakonenko、S. V. Shishkina
DOI:10.1134/s1070428016050055
日期:2016.5
Reaction direction of N-sulfonyl derivatives of 1,4-benzoquinone monoimine with substituted hydrazines depends on the redox potential of the quinone imine and on the basicity of the hydrazine. Aryl (alkyl)hydrazines of high basicity favor the reduction of quinone monoimine. In reactions with less basic aroylhydrazones N'-(4-oxocyclohexa-2,5-dienylidene)aroylhydrazides were obtained only from the alkylsubstituted
Avdeenko; Menafova; Zhukova, Russian Journal of Organic Chemistry, 1998, vol. 34, # 2, p. 210 - 220
作者:Avdeenko、Menafova、Zhukova
DOI:——
日期:——
Avdeenko, Russian Journal of Organic Chemistry, 2000, vol. 36, # 4, p. 522 - 527
作者:Avdeenko
DOI:——
日期:——
Zakatov, V.V.; Dubina, V.L.; Torubarnov, I.V., Russian Journal of Organic Chemistry, 1994, vol. 30, # 2, p. 303 - 306
作者:Zakatov, V.V.、Dubina, V.L.、Torubarnov, I.V.
DOI:——
日期:——
Thiocyanation of N-arylsulfonyl-, N-aroyl-, and N-[(N-arylsulfonyl)benzimidoyl]-1,4-benzoquinone imines
作者:A. P. Avdeenko、V. V. Pirozhenko、S. A. Konovalov、D. A. Roman’kov、G. V. Palamarchuk、O. V. Shishkinc
DOI:10.1134/s1070428009030105
日期:2009.3
Reactions of thiocyanate ion with N-aroyl-, N-arylsulfonyl-, and N-(N-arylsulfonylbenzimidoyl)-1,4-benzoquinone imines follow the 1,4-addition pattern, and the adducts undergo intramolecular cyclization to give the corresponding N-substituted 5-amino-1,3-benzoxathiol-2-ones as final products.