114954-06-2

Upstream product

• 114953-98-9 5-(2-Hydroxy-phenyl)-2-phenyl-4-[1-phenylamino-meth-(E)-ylidene]-2,4-dihydro-pyrazol-3-one 
• 39208-08-7 ethyl 3-<2-(benzyloxy)phenyl>-3-oxopropanoate 
• 100-63-0 phenylhydrazine 
• 114953-95-6 5-(2-Benzyloxy-phenyl)-2-phenyl-2,4-dihydro-pyrazol-3-one 
• 114967-61-2 1-phenyl-3-(2-hydroxyphenyl)-2-pyrazolin-5-one 

Relevant academic research and scientific papers

Tricyclic heteroaromatic systems: Synthesis, [3H]flunitrazepam brain membrane binding inhibition, and structure-activity relationships of 2,3-dihydro-2-aryl-4-R-[1]benzopyrano[4,3-c]pyrazole-3-ones

We report the synthesis and binding activity to the central benzodiazepine receptors of some 2,3-dihydro-2-ary-4-R-[1]benzopyrano[4,3-c]pyrazole-3-ones, which are isosteres of the CGS series. Although the compounds of the CGS series are potent ligands of

THE CORRECT SYNTHESIS OF 2,3-DIHYDRO-2-ARYL-4-R-BENZOPYRANOPYRAZOLE-3-ONES.

The correct synthesis of the title compounds 1a-b and 2a-b is described.The claimed synthesis of 2a from 2-methyl-3-chromonecarbonitrile is shown not to lead to 2a, as previously reported but to 1,4-dihydro-1-phenyl-3-methylbenzopyranopyrazole-4