Rapid synthesis of 2,3-disubstituted-quinazolin-4-ones enhanced by microwave-assisted decomposition of formamide
摘要:
An efficient methodology for the preparation of a series of 2,3-disubstituted-quinazolin-4(3H) -ones is described via a three step reaction from anthranilic acid. The obtained results also reveal that microwave-assisted rapid decomposition of formamide under controlled conditions of power, temperature and time is a very convenient source of ammonia for the synthesis of 2-substituted-quinazolin-4(3H)-ones and other rings. (c) 2007 Elsevier Ltd. All rights reserved.
Auto-Tandem Catalysis with Ruthenium: From <i>o</i>
-Aminobenzamides and Allylic Alcohols to Quinazolinones <i>via</i>
Redox Isomerization/Acceptorless Dehydrogenation
作者:Weikang Zhang、Chong Meng、Yan Liu、Yawen Tang、Feng Li
DOI:10.1002/adsc.201800660
日期:2018.10.4
A strategy for the synthesis of quinazolinonesvia Ru‐catalyzed redoxisomerization/acceptorlessdehydrogenation was proposed and accomplished. In the presence of a commercially available [(p‐cymene)Cl2]2, a range of desirable products were obtained with o‐aminobenzamides and allylicalcohols as starting materials in moderate to high yields. This strategy is attractive due to high atom efficiency,