340735-02-6Relevant articles and documents
2-(2-Arylvinyl)-7-substituted-quinazolin-4(3H)-ones: Synthesis, reactions and antimicrobial activity
El-Meligie,El-Ansary,Said,Hussein
, p. 62 - 69 (2007/10/03)
7-Chloro-3-(4-hydroxyphenyl)-2-methylquinazolino-4(3H)-one 3a on condensation with ethyl chloroformate, epichlorhydrin and isocyanates gives 7-chloro-3-[4-ethoxycarbonyloxyphenyl]-2-methylquinazolin-4(3H)-one 4a, 7-chloro-3-[4-(2,3epoxypropoxy)phenyl]-2-methylquinazolin-4(3H)-ones 5a and 7-chloro-3-[4-(substituted amino carbonyloxy) phenyl]-2methylquinazolin-4-(3H-oncs) 6a,b, respectively which on condensation with the appropriate aldehyde yield 2-(2arylvinyl)-7-chloro (or nitro)-3-[4-ethoxycarbonyloxy)phenyl]quinazolin-4(3H)-ones 4b,c, 2-(2-arylvinyl)-7-chloro-3-[4(2,3-epoxypropoxy)phenyl]quinazolin-4 (3H)-ones 5b,c and 7-chloro-2-[2-(4-chlorophenyl)vinyl]-3-[4-substituted aminocarbonyloxy)phenyl]quinazolin-4(3H)-ones 6c, d, respectively. Also the compounds 4b-d and 5b-d have been synthesized by reacting 2-(2-arylvinyl)-7-chloro (or nitro)-3-(4-hydroxyphenyl) quinazolin-4(3H)-ones 3b-d with ethyl chloroformate and epichlorohydrin, respectively. 7-Chloro-2-[2-(4-chlorophenyl)vinyl]-3-[4-(substituted aminocarbonyloxy)phenyl]quinazolin-4(3H)-ones 6c,e have also been obtained from 3b by refluxing with isocyanates. Further, 4,7-dichloroquinazolines 10,b are obtained from 2-styrylquinazolinones 9a,b on treatment with POCI3. Compounds 10a,b on condensation with glycine in the presence of pyridine yield 2-(2-arylvinyl)-7-chloro-4-carboxymethylaminoquinazolines 11a,b which on fusion with Ac2O/NaOAc afford 5-(2-arylvinyl)-8-chloro-imidazo[1,2-c]quinazolin-3-(2H)-ones 12a,b. Several compounds have been tested for their antimicrobial activity.