1791-51-1Relevant academic research and scientific papers
Regioselective synthesis and biological evaluation of: N -substituted 2-aminoquinazolin-4-ones
Liao, Zhen-Yuan,Yeh, Wen-Hsiung,Liao, Pen-Yuan,Liu, Yu-Ting,Chen, Ying-Cheng,Chen, Yi-Hung,Hsieh, Tsung-Han,Lin, Chia-Chi,Lu, Ming-Hsuan,Chen, Yi-Song,Hsu, Ming-Chih,Li, Tsai-Kun,Chien, Tun-Cheng
supporting information, p. 4482 - 4494 (2018/06/29)
The reaction of methyl anthranilates with N-arylcyanamides in the presence of p-TsOH in t-BuOH under reflux afforded predominantly 3-arylquinazolin-4-ones. In contrast, the reaction of the same reactants with TMSCl in t-BuOH at 60 °C followed by the Dimro
Ligand-free palladium assisted insertion of isocyanides to urea derivatives for cascade synthesis of phenylamino-substituted quinazolinones
Sharma, Siddharth,Jain, Abhilasha
, p. 6051 - 6054 (2015/01/09)
Palladium catalyzed cascade coupling of substituted urea derivatives and tert-butyl isocyanide for the efficient synthesis of phenylamino-substituted quinazolinones has been developed in moderate to good yields. This method provides a short and alternative approach for the synthesis of quinazolinones derivatives which are valuable compounds with biological and pharmacological potentials. A plausible mechanistic scheme is proposed.
Continuous recycling of homogeneous Pd/Cu catalysts for cross-coupling reactions
Sharma, Siddharth,Basavaraju,Singh, Ajay K.,Kim, Dong-Pyo
supporting information, p. 3974 - 3977 (2014/08/18)
Given the importance of homogeneous catalysts recycling in organic chemistry, we have developed a unique microfluidic loop system for automated continuous recirculation of a soluble polymer supported metal catalyst for novel isocyanide cross-coupling reactions under thermomorphic multicomponent solvent (TMS) conditions. Our system provides an innovative approach for the chemical library synthesis of quinazolinone derivatives as well as an important intermediate of Merck's LTD4 antagonist "Singulair" with efficient continuous homogeneous catalyst recycling.
Synthesis of aroylguanidines by an unexpected demethylation-addition cascade
Gu, Ling Hui,Guo, Zhen,He, Ling,Qi, Qing Rong
, p. 2533 - 2544 (2013/09/24)
A simple and efficient method was developed for the synthesis of N-aroyl-N′-arylguanidines under mild conditions by an unexpected demethylation-addition cascade reaction of readily available N-cyanoimidates with aryl amines. Moreover, 1-aryl-2-aminoquinazolin-4(1H)-ones and 2-(arylamino)quinazolin-4(3H)-ones can also be prepared by selective cyclization reactions of (2-fluorobenzoyl)- or (2-nitrobenzoyl)guanidines, respectively. This method provided two attractive strategies for the preparation 2-aminoquinazolinones derivatives from inexpensive reactants.
