1791-52-2Relevant academic research and scientific papers
A concise and efficient solid-phase synthesis of 2-amino-4(3H)-quinazolinones
Yang,Kaplan
, p. 7005 - 7008 (2000)
A concise and efficient solid-phase synthesis of 2-amino-4(3H)-quinazolinones is described. Reaction of polymer-bound isothiourea with isatoic anhydride provides 2-amino-4(3H)-quinazolinones with good yields and excellent purity. (C) 2000 Elsevier Science Ltd.
I2/CHP-Mediated Oxidative Coupling of 2-Aminobenzamides and Isocyanides: Access to 2-Aminoquinazolinones
Wei, Tian-Qi,Xu, Pei,Wang, Shun-Yi,Ji, Shun-Jun
, p. 5393 - 5398 (2016)
An oxidative coupling of 2-aminobenzamides 1 and isocyanides 2 mediated by I2and cumyl hydroperoxide (CHP) leads to the formation of 2-aminoquinazolinones 3 in moderate to excellent yields. This method provides an efficient approach to 2-aminoq
Electrochemical Synthesis of Carbodiimides via Metal/Oxidant-Free Oxidative Cross-Coupling of Amines and Isocyanides
Badsara, Satpal Singh,Jaiswal, Pradeep K.,Malviya, Bhanwar Kumar,Sharma, Siddharth,Verma, Ved Prakash
supporting information, (2020/03/19)
This work discloses an electrochemical oxidative cross-coupling of amines with aryl and aliphatic isocyanides. In an undivided cell, the reaction proceeds without involving any transition-metal catalyst, oxidant, or toxic reagents providing carbodiimides in good yields, thereby circumventing stoichiometric chemical oxidants, with H2 as the only byproduct. Moreover, carbodiimides were in situ converted into unsymmetrical ureas in moderate to good yields using an electricity ON-OFF strategy.
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.
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.
Odorless isocyanide chemistry: An integrated microfluidic system for a multistep reaction sequence
Sharma, Siddharth,Maurya, Ram Awatar,Min, Kyoung-Ik,Jeong, Guan-Young,Kim, Dong-Pyo
supporting information, p. 7564 - 7568 (2013/07/26)
Can't smell this: An integrated continuous-flow microfluidic setup enables in situ generation, extraction, separation, and reaction of foul-smelling isocyanides with little exposure to the surroundings. Isocyanides were generated by dehydration of the corresponding N-substituted formamides, and several representative isocyanide-based organic reactions were successfully performed. DIPEA=N,N-diisopropylethylamine. Copyright
