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TangPlace
pyrimidineChemical substance
benzene.svg%3Fwidth%3D300&w=3840&q=75)
iodobenzene diacetateChemical substance
dichloromethaneChemical substance
Dimroth rearrangementDisease
Associate Editor: J. P. Wolfe © 2013 Tang et al; licensee Beilstein-Institut. License and terms: see end of document. Oxidative cyclization of 6-chloro-4-pyrimidinylhydrazones 4 with iodobenzene diacetate (IBD) in dichloromethane gives rise to [1,2,4]triazolo[4,3-c]pyrimidine derivatives 5a–o. These incipient products undergo feasible Dimroth rearrangement to furnish the isolated [1,2,4]triazolo[1,5-c]pyrimidines 6a–o in moderate to high yields
© 2018, Springer Science+Business Media, LLC, part of Springer Nature. [Figure not available: see fu...
Growing interests on pyrimidine fused heterocycles arises from several reports for their biological ...
Reaction of ethyl imidates derived from N-aryl-5-amino-4-cyanopyrazoles with amines or arylhydrazin...
Oxidative cyclization of 6-chloro-4-pyrimidinylhydrazones 4 with iodobenzene diacetate (IBD) in dich...
3-Methylimidazolo[1,5-a]pyridine and 3-methyl-1,2,4-triazolo[4,3-a]-pyrazine were prepared by coupli...
International audiencePolynitrogen heterocycles are often subject to Dimroth rearrangement which con...
The reaction of 1,2-dihydro-6-(phenylamino)-2-thioxopyrimidin-4(3H)one (16) with N-arylhydrazonoyl h...
[Figure not available: see fulltext.] The reaction of N-substituted isatins with 5-amino-1-phenyl-1H...
Three-step synthesis of 6-amino-2,3-dihydro-4-pyridinones from homoallylamines involving NBS-mediate...
The carbodiimides 2, obtained from aza-Wittig reactions of iminophosphorane 1 with aromatic isocyana...
The reaction of benzylhydroxylamine with 6-cyanopurines leads to the formation of 7-benzyloxy-8-imin...
The methods for the synthesis of oxazolo[3,2a]pyridinium and oxazolo[3,2a]pyrimidinium salts and the...
Polynitrogen heterocycles are often subject to Dimroth rearrangement which consists of ring opening,...
The data that support the findings of this study are available in the supplementary material of this...
A series of new 5-chloro-8-bromo-3-aryl-1,2,4-triazolo4,3-cpyrimidines (4a-j) have been accomplished...
© 2018, Springer Science+Business Media, LLC, part of Springer Nature. [Figure not available: see fu...
Growing interests on pyrimidine fused heterocycles arises from several reports for their biological ...
Reaction of ethyl imidates derived from N-aryl-5-amino-4-cyanopyrazoles with amines or arylhydrazin...
Oxidative cyclization of 6-chloro-4-pyrimidinylhydrazones 4 with iodobenzene diacetate (IBD) in dich...
3-Methylimidazolo[1,5-a]pyridine and 3-methyl-1,2,4-triazolo[4,3-a]-pyrazine were prepared by coupli...
International audiencePolynitrogen heterocycles are often subject to Dimroth rearrangement which con...
The reaction of 1,2-dihydro-6-(phenylamino)-2-thioxopyrimidin-4(3H)one (16) with N-arylhydrazonoyl h...
[Figure not available: see fulltext.] The reaction of N-substituted isatins with 5-amino-1-phenyl-1H...
Three-step synthesis of 6-amino-2,3-dihydro-4-pyridinones from homoallylamines involving NBS-mediate...
The carbodiimides 2, obtained from aza-Wittig reactions of iminophosphorane 1 with aromatic isocyana...
The reaction of benzylhydroxylamine with 6-cyanopurines leads to the formation of 7-benzyloxy-8-imin...
The methods for the synthesis of oxazolo[3,2a]pyridinium and oxazolo[3,2a]pyrimidinium salts and the...
Polynitrogen heterocycles are often subject to Dimroth rearrangement which consists of ring opening,...
The data that support the findings of this study are available in the supplementary material of this...
A series of new 5-chloro-8-bromo-3-aryl-1,2,4-triazolo4,3-cpyrimidines (4a-j) have been accomplished...
© 2018, Springer Science+Business Media, LLC, part of Springer Nature. [Figure not available: see fu...
Growing interests on pyrimidine fused heterocycles arises from several reports for their biological ...
Reaction of ethyl imidates derived from N-aryl-5-amino-4-cyanopyrazoles with amines or arylhydrazin...
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