709030-49-9Relevant articles and documents
The Synthesis of 8-Hydroxyquinazoline Derivatives and Their Acid-Base Interactions
Kudelko, Agnieszka,Zielinski, Wojciech
, p. 247 - 251 (2007/10/03)
The reaction of N-(2-R1-oxyphenyl)benzimidoyl chlorides with cyanamide derivatives in the presence of titanium tetrachloride as a catalyst has yielded some new 4-amino-8-R1-oxy-2-phenylquinazolines. pK a values have been determined for these compounds and the influence of substituents at the basicity of the parent system has been discussed. Some investigations on the methyl-quinazolinyl ether cleavage in different medium have been done yielding the appropriate hydroxyquinazoline derivatives. In those cases when the deprotection of 4-amino-8-methoxy-2-phenylquinazoline was carried in aqueous acidic solutions, the formation of the hydrolysis products 3,4-dihydro-2-phenyl-4-quinazolone derivatives was observed as well.