872573-40-5

Upstream product

• 872573-48-3 4-hydrazinothieno[3,2-d]pyrimidin-2(1H)-one 
• 100-52-7 benzaldehyde 
• 16233-51-5 1H-thieno[3,2-d]pyrimidine-2,4-dione 
• 872573-47-2 2-oxo-4-thioxo-1,2,3,4-tetrahydrothieno[3,2-d]pyrimidine 

Relevant academic research and scientific papers

The first and reliable synthesis of thieno[2,3-e][1,2,4]-triazolo[1,5-c]pyrimidin-5(6H)-ones via their [4,3-c] compounds by dimroth rearrangement

This paper describes a reliable and general synthesis of thieno[2,3-e]-[1,2,4]triazolo[1,5-c]pyrimidin-5(6H)-one(5a) and its 2-substituted derivatives (5b-i) as a novel ring system prepared by nimble isomerization of their [4,3-c] compounds (4a-i), which