108290-32-0

Upstream product

• 112382-27-1 N'-[1-(4-Fluoro-phenyl)-eth-(Z)-ylidene]-hydrazinecarboxylic acid methyl ester 
• 119-36-8 methyl salicylate 
• 138840-92-3 1H-4,5-dihydro-3-(4-fluorophenyl)-5-(2-hydroxyphenyl)pyrazole 
• 138840-95-6 2-(4-fluorophenyl)-1,10b-dihydro-5H-pyrazolo[1,5-c][1,3]benzoxazin-5-one 

Downstream Products

• 138841-01-7 2-(4-Fluoro-phenyl)-5-oxa-3,3a-diaza-cyclopenta[a]naphthalene-4-thione 

Relevant academic research and scientific papers

Tetrachloro-o-benzoquinone in Organic Synthesis: A Novel Synthetic Route to Pyrazolobenzoxazines and 5,7-Disubstituted-4-hydroxycoumarins

A novel synthesis of dihydropyrazolobenzoxazines and their corresponding pyrazolobenzoxazines utilizing tetrachloro-o-benzoquinone - as a dehydrogenating agent - is described.Also, this simple method of dehydrogenation succeeds in

The Preparation of Selected Benzopyranopyrazoles by the Condensation of C(α),N-Dilithiocarboalkoxyhydrazones and Salicylate Esters

Selected C(α),N-dilithiocarboalkoxyhydrazones were prepared in an excess of lithium diisopropylamide (LDA) and condensed with a variety of salicylate esters to give intermediates that were acid-cyclized to benzopyranopyrazoles (coumarin-pyrazoles).