212247-76-2

Upstream product

• 109-84-2 2-hydroxyethylhydrazine 
• 94-02-0 ethyl 3-oxo-3-phenylpropionate 
• 98-59-9 p-toluenesulfonyl chloride 

Downstream Products

• 67000-45-7 2,3-dihydro-6-phenylpyrazolo[3,2-b]oxazole 
• 54679-59-3 3-hydroxy-1-methyl-5-phenylpyrazole 
• 212247-91-1 1-methyl-5-phenyl-2-vinylpyrazol-3-one 
• 212247-89-7 2-(2-cyanoethyl)-1-methyl-5-phenylpyrazol-3-one 

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