212247-91-1

Upstream product

• 333-27-7 methyl trifluoromethanesulfonate 
• 67000-45-7 2,3-dihydro-6-phenylpyrazolo[3,2-b]oxazole 
• 94-02-0 ethyl 3-oxo-3-phenylpropionate 
• 212247-76-2 2-(2-hydroxyethyl)-5-phenyl-1-tosylpyrazole-3-one 
• 27412-71-1 5-phenyl-1H-pyrazol-3(2H)-one 

Downstream Products

• 54679-59-3 3-hydroxy-1-methyl-5-phenylpyrazole 

Relevant academic research and scientific papers

Unambiguous synthesis of 1-methyl-3-hydroxypyrazoles

2,3-Dihydropyrazolo[3,2-b]oxazoles were used as intermediates in a new method for preparation of N1-methyl-3-hydroxypyrazoles. Synthesis of this bicyclic system was achieved either by alkylation of 3-hydroxypyrazole with 1,2-dibromoethane or, with better