69949-33-3

Upstream product

• 101118-94-9 2-(2-chloro-benzoylamino)-benzoic acid ethyl ester 
• 4765-51-9 2-(2-chlorophenyl)benzo[d]1,3-oxazin-4-one 

Downstream Products

• 106782-46-1 2-(2-chloro-phenyl)-benzo[d][1,3]thiazin-4-one 
• 83389-57-5 [2-(2-Chloro-phenyl)-4-thioxo-4H-quinazolin-3-yl]-carbamic acid methyl ester 
• 83389-88-2 N'-[2-(2-Chloro-phenyl)-benzo[d][1,3]thiazin-(4Z)-ylidene]-hydrazinecarboxylic acid methyl ester 
• 83416-23-3 N'-[2-(4-Chloro-phenyl)-4-mercapto-4H-benzo[d][1,3]thiazin-4-yl]-hydrazinecarboxylic acid methyl ester; compound with triethyl-amine 
• 83389-58-6 [2-(2-Chloro-phenyl)-4-thioxo-4H-quinazolin-3-yl]-carbamic acid ethyl ester 
• 83389-89-3 N'-[2-(2-Chloro-phenyl)-benzo[d][1,3]thiazin-(4Z)-ylidene]-hydrazinecarboxylic acid ethyl ester 
• 83401-24-5 N'-[2-(4-Chloro-phenyl)-4-mercapto-4H-benzo[d][1,3]thiazin-4-yl]-hydrazinecarboxylic acid ethyl ester; compound with triethyl-amine 
• 670280-39-4 3-allyl-2-(2-chlorophenyl)-4(3H)-quinazolinethione 
• 670280-30-5 4-allylthio-2-(2-chlorophenyl)quinazoline 
• 670280-45-2 4-carboxymethylthio-2-(2-chlorophenyl)quinazoline 
• 83390-04-9 [2-(2-Chloro-phenyl)-4-oxo-4H-quinazolin-3-yl]-carbamic acid ethyl ester 
• 18590-76-6 2-(2-chlorophenyl)-4(3H)-quinazolinethione 

Relevant academic research and scientific papers

Studies on quinazolines. Part III. Synthesis of some fused-ring cationic and mesoionic derivatives of the 1,3-thiazolo[3,2-c]quinazoline ring system

4-Allylthio-2-arylquinazolines 4a-c undergo cyclization by action of bromine to furnish 5-aryl-3-bromomethyl-2,3-dihydrothiazolo[3,2-c]quinazolin-4- ium bromide 5a-c. Compounds 5a-c undergo ring opening by action of water under acid catalysis to afford th