72786-90-4

Upstream product

• 58327-87-0 2,7,9-trimethyl-4H-pyrido<3',2':4,5>thieno<3,2-d><1,3>-oxazin-4-one 
• 62-53-3 aniline 
• 55023-72-8 3-amino-4,6-dimethyl-thieno[2,3-b]pyridine-2-carboxylic acid; potassium salt 
• 52505-56-3 ethyl 3-amino-4,6-dimethylthieno[2,3-b]pyridine-2-carboxylate 
• 109-73-9 N-butylamine 

Relevant academic research and scientific papers

Reaction of 4-oxo-4H-pyrido[3',2': 4,5]thieno[3,2-d]1,3-oxazines with amines

The reaction of the title compounds with amines gave in dependence of the reaction conditions and the structure of the title compounds and the amine 3-acylamino-thieno[2,3-b]pyridine-2-carbonamides, 4-oxo-4H-pyrido[3',2': 4,5]thieno[3,2-d]pyrimidines, N-(

SOME REACTIONS OF 3-AMINO-2-CARBOETHOXY-4,6-DIMETHYLTHIENOPYRIDINE. SYNTHESIS OF SOME NEW THIENOPYRIDINOPYRIMIDINES

Thienopyridine oxazinone (1) has been prepared and explored as a precursor by its reaction with some reagents namely, ammonium acetate, aliphatic amines, aromatic amines, hydrazine hydrate, thiosemicarbazide, and ethyl glycinate to give pyridothienopyrimidines (II-VII).The pyrimidinone compound (II) was converted to the 4-chloro derivative (X) by its reaction with excess POCl3.Interaction of the 4-chlorocompound (X) with some reagents namely, hydrazine hydrate, methyl amine, aniline, sodium thiophenolate, ethyl glycinate, thiosemicarbazide and thiourea, yielded pyridothieno-pyrimidine derivatives (XI-XVII) substituted at 4-position, respectively.