An Efficient Synthesis of Thio- and Thiazoloquinazolinones by the Electrochemical Oxidation of Catechols in the Presence of 2-Mercapto-4(3<i>H</i>)-quinazolinone
Thio- and thiazoloquinazolinones were synthesized efficientlyby the anodic oxidation of catechols in the presence of 2-mercapto-4(3 H)-quinazolinone in aqueous solution.4-Methylcatechol and 3-methoxycatechol convert into thioquinazolinonesvia an EC (E: electron transfer, C: chemical reaction) pathway.Catechol, 3-methylcatechol, and 3,4-dihydroxybenzoic acid convertinto thiazoloquinazolinones via an