Functionalization of Quinazolin-4-ones Part 1: Synthesis of Novel 7-Substituted-2-thioxo Quinazolin-4-ones from 4-Substituted-2-Aminobenzoic Acids and PPh<sub>3</sub>(SCN)<sub>2</sub>
作者:Jacob Heppell、Jasim Al-Rawi
DOI:10.1002/jhet.1669
日期:2014.1
acetylamino)‐2‐aminobenzoic acid were allowed to react with PPh3(SCN)2 and gave the crossholding 7‐nitro, 7‐acetylamino‐ and 7‐amino‐2‐thioxo quinazolin‐4‐ones respectively. The nature of the substituent at position 4 of the 2‐aminobenzoic acids has significant influence on the outcome of the cyclisation reaction with PPh3(SCN)2. Similarly, the nature of the substituent at position 7 of the 2‐substituted