30561-26-3

Upstream product

• 2216-94-6 phenylpropynoic acid ethyl ester 
• 59776-20-4 3-(4-chloro-phenyl)-6,8-dimethyl-4-oxy-8H-pyrimido[5,4-e][1,2,4]triazine-5,7-dione 
• 52421-33-7 4-chloro-benzaldehyde (1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-pyrimidin-4-yl)-methyl-hydrazone 
• 42748-11-8 1,2,3,4-Tetrahydro-1,3-dimethyl-6-(4-chlorophenylmethylidenehydrazion)pyrimidin-2,4-dione 
• 78158-88-0 6-{N'-[1-(4-Chloro-phenyl)-meth-(Z)-ylidene]-hydrazino}-1,3-dimethyl-5-(4-nitro-phenylazo)-1H-pyrimidine-2,4-dione 
• 78158-83-5 6-{N'-[1-(4-Chloro-phenyl)-meth-(Z)-ylidene]-hydrazino}-1,3-dimethyl-5-phenylazo-1H-pyrimidine-2,4-dione 

Relevant academic research and scientific papers

Further Studies on the Ring Transformation of Pyrimido-as-triazine 4-Oxides to Pyrrolopyrimidines Involving 1,3-Dipolar Cycloaddition Reactions

The reaction of 3-alkyl(or aryl)-6,8-dimethylpyrimido-as-triazine-5,7(6H,8H)-dione 4-oxides (1a-f) with ethyl phenylpropiolate (EPP) in toluene afforded the unexpected 6-alkyl(or aryl)-5-benzoyl-7-(ethoxy-carbonyl)-1,3-dimethylpyrrolopyrimid

N-Bromosuccinimide in Heterocyclic Synthesis. Synthesis of Pyrazolopyrimidines, Pyrimido-as-triazines, and Pyrimidopyridazines from 6-Arylidenehydrazino-1,3-dimethyluracil Derivatives

Reactions of 6-arylidenehydrazino-1,3-dimethyluracil derivatives with N-bromosuccinimide leading to pyrazolopyrimidines, pyrimido-as-triazines, and pyrimidopyridazines are described.

A NEW SYNTHESIS OF PYRIMIDO-as-TRIAZINE DERIVATIVES

The reaction of 5-arylazo-6-arylidenehydrazino-1,3-dimethyluracils (II), prepared by the diazotization of 6-arylidenehydrazino-1,3-dimethyluracils (I), with dimethylformamide dimethylacetal afforded the corresponding 3-arylfervenulins (3-aryl-6,8-dimethylpyrimido-as-triazine-5,7(6H,8H)-diones) (V).