697241-93-3

Upstream product

• 555-16-8 4-nitrobenzaldehdye 
• 1915-02-2 3-(1,3-dihydro-2H-isoindol-2-yl)-2-methylquinazolin-4(3H)-one 
• 525-76-8 2-methyl-4-oxo-3,1-benzoxazine 
• 1898-06-2 3-amino-2-methyl-4-oxoquinazoline 
• 118-92-3 anthranilic acid 

Downstream Products

• 201292-87-7 3-amino-2-(p-nitrostyryl)quinazolin-4(3H)-one 
• 697241-99-9 N-(2-(p-nitrostyryl)-4-oxo-3H-quinazolin-3-yl)-2-aminobenzamide 
• 697241-96-6 N-(2-(p-nitrostyryl)-4-oxo-3H-quinazolin-3-yl)-2-nitrobenzamide 

Relevant academic research and scientific papers

Studies on quinazolines: Part II-Synthesis and antimicrobial evaluation of some 2,2-disubstituted-3,3-biquinazolin-4(3H)-ones

N-(2-Styryl-, 2-p-chlorostyryl- or 2-p-nitrostyryl-4-oxo-3H-quinazolin-3-yl)-2-aminobenzamides 6a-c react with triethyl orthoesters to furnish some new 2-styryl-, 2-p-chlorostyryl- or 2-p-nitrostyryl-2-substituted-3,3-biqui-nazolin-4(3H)-ones (7a-c-9a-c). An alternative synthesis of (7-9)b has been accomplished by reaction of acetylanthranil with 2-amino-2-styryl-, 2-p-chlorostyryl- or 2-p-nitrostyryl-quinazolin-4(3H)-ones 4a-c. The synthesised products are tested for antimicrobial activities using methaqualone as reference standard.