190514-73-9

Upstream product

• 1022-46-4 2-phenyl-4H-3,1-benzoxazin-4-one 
• 1904-58-1 anthranilic acid hydrazide 
• 178884-48-5 2-phenyl-3-(2-nitrobenzamido)quinazolin-4(3H)-one 
• 1904-60-5 3-amino-2-phenylquinazolin-4(3H)-one 
• 610-14-0 2-nitrobenzyl chloride 

Downstream Products

• 190514-74-0 2-phenyl-3-[2-(4'-methylphenyl)-4-oxo-1,2,3,4-tetrahydroquinazolin-3-yl]quinazolin-4(3H)-one 
• 213551-96-3 2-phenyl-3-(2-N-chloroacetylaminobenzamido)quinazolin-4(3H)-one 

Relevant academic research and scientific papers

Bisazaheterocyclics: Part V - Synthesis of some quinazolinonyl/benzodiazepinonyl - quinazolinones

2-Phenyl-3-(2-aminobenzamido)quinazolin-4(3H)-one 1 reacts with aldehydes, phenylisocyanate and chloroacetyl chloride to give 2-phenyl-3-(2-alkyl/aryl-4-oxo-1,2,3,4-tetrahydroquinazolin-3-yl)quinazolin-4(3H)-ones 2, 2-phenyl-3-(2,4-dioxo-1,2,3,4-tetrahydr

Reaction of 2-phenyl-3, 1-benzoxazin-4(H)-one and 2-aminobenzoyl-hydrazine - Reassignment of structure for the minor product

The structure of the minor product formed in the reaction of 2-phenyl-3,1-benzoxazin-4(H)-one with 2-aminobenzoyl-hydrazine in pyridine under reflux has been reassigned as 2-(2-aminophenyl)-5-phenyl-l,3,4-oxadiazole 3 instead of 2-phenyl-3-(2-aminobenzamido)-1,3,4-benzotriazepin-5-one 2.

2-Phenyl-3-(2-aminobenzamido)quinazolin-4(3H)-one as a synthon for bisazaheterocvclics

Synthesis of 2-phenyl-3-(2-aminobenzamido)quinazolin-4(3H)-one 7, a synthon of unsymmetrical bisazaheterocyclics, is reported from 3-amino-2-phenylquinazolin-4(3H)-one 2. In an alternate synthetic route 7 has been prepared by refluxing 2-aminobenzoylhydrazine and 2-phenyl-3,1-benzoxazin-4(H)-one 1 in pyridine.