A highly efficient heterogeneous palladium-catalyzed carbonylative annulation of 2-aminobenzamides with aryl iodides leading to quinazolinones
作者:Shengyong You、Bin Huang、Tao Yan、Mingzhong Cai
DOI:10.1016/j.jorganchem.2018.09.003
日期:2018.11
The first heterogeneous carbonylative annulation of 2-aminobenzamides with aryl iodides was achieved in N,N-dimethylformamide (DMF) at 120 °C under 10 bar of carbon monoxide by using an MCM-41-immobilized bidentatephosphine palladium(II) complex [MCM-41-2P-Pd(OAc)2] as catalyst and 1,8-diazabicycloundec-7-ene (DBU) as base, yielding a wide variety of quinazolinone derivatives in good to excellent
A simple and efficient Brønsted acidcatalyzed synthesis of 2-aryl-quinazolinones via cyclization of 2-aminobenzamides with benzonitrile in PEG under metal and ligand-free condition. All substituted benzonitriles were also well participated with the formation of the corresponding products in moderate to good yields.
One-Pot Copper(I)-Catalyzed Ligand/Base-Free Tandem Cyclooxidative Synthesis of Quinazolinones
作者:Kapil Upadhyaya、Ravi Kumar Thakur、Sanjeev K. Shukla、Rama Pati Tripathi
DOI:10.1021/acs.joc.6b00599
日期:2016.6.17
A novel and efficient Cu(I)-catalyzed ligand- and base-free multipathway domino strategy has been developed for the synthesis of 2-substituted quinazolinones. The reaction utilizes 2-bromobenzamide and multiform substrates such as aldehydes, alcohols, and methyl arenes for a one-pot protocol, whereas TMSN3 is used as a nitrogen source. A wide range of substrate scope, functional group tolerance, and
A practical synthesis of quinazolinones via intermolecular cyclization between 2-halobenzamides and benzylamines catalyzed by copper(I) immobilized on MCM-41
作者:Nan Yan、Chongren You、Mingzhong Cai
DOI:10.1016/j.jorganchem.2019.07.003
日期:2019.10
using an MCM-41-immobilized l-proline copper(I) complex [MCM-41-l-Proline-CuBr] as the catalyst and air as the oxidant, yielding a variety of quinazolinone derivatives in good yields. The new MCM-41-l-Proline-CuBr catalyst can easily be prepared from commercially readily available and inexpensive reagents and recovered by filtration of the reaction mixture, and reused up to seven times with almost consistent
Copper-Catalyzed Domino Synthesis of Quinazolinones via Ullmann-Type Coupling and Aerobic Oxidative C−H Amidation
作者:Wei Xu、Yibao Jin、Hongxia Liu、Yuyang Jiang、and Hua Fu
DOI:10.1021/ol1030266
日期:2011.3.18
starting materials as well as economical and environmentally friendly air as the oxidant. This can be the first example of constructing N-heterocycles via sequential Ullmann-type coupling under air and aerobicoxidative C−H amidation.