946262-56-2

Upstream product

• 923784-01-4 C₁₂H₁₀N₄OS 
• 2687-12-9 cinnamyl chloride 

Downstream Products

• 1156464-18-4 6-phenyl-1-(4-tolyl)-4,6,7,8-tetrahydro-1H-pyrazolo[3',4':4,5]pyrimido[2,1-b][1,3]thiazin-4-one 

Relevant academic research and scientific papers

Electrophilic heterocyclization of 6-alken(yn)ylsulfanyl-pyrazolo[3,4-d] pyrimidin-4(5H)-ones

6-Allylsulfanyl-1-arylpyrazolo[3,4-d]pyrimidin-4(5H)-ones react with iodine and sulfuric acid to give angular pyrazolothiazolopyrimidine derivatives. The reaction of 6-(prop-2-yn-1-ylsulfanyl)-1-(4-tolyl)-pyrazolo[3,4-d]pyrimidin- 4(5H)-one with sulfuric acid gives angularly fused pyrazolo[4,3-e][1,3]thiazolo- [3,2-a]pyrimidin-4-one, whereas in the reaction with sodium methoxide linearly fused pyrazolo[3,4-d][1,3]-thiazolo[3,2-a]pyrimidin-4-one was formed. Linearly fused pyrazolo[3′,4′:4,5]pyrimido[2,1-b][1,3]thiazole derivatives were also obtained by reaction of 1-aryl-6-(3-phenylprop-2-en-1-ylsulfanyl) pyrazolo[3,4-d]pyrimidin-4(5H)-ones with sulfuric acid.