Hydrogen peroxide-mediated synthesis of 2,4-substituted quinazolines <i>via</i> one-pot three-component reactions under metal-free conditions
作者:Khang H. Trinh、Khang X. Nguyen、Phuc H. Pham、Tung T. Nguyen、Anh N. Q. Phan、Nam T. S. Phan
DOI:10.1039/d0ra05040g
日期:——
An efficient metal-free synthesis of 2,4-substituted quinazolines via a hydrogen peroxide-mediated one-pot three-component reaction of 2-aminoaryl ketones, aldehydes, and ammonium acetate has been developed. The transformation proceeded readily under mild conditions in the presence of commercially available hydrogen peroxide. The significant advantages of this approach are (1) the readily available
n-Bu<sub>4</sub>NI-catalyzed selective dual amination of sp<sup>3</sup> C–H bonds: oxidative domino synthesis of imidazo[1,5-c]quinazolines on a gram-scale
作者:Dan Zhao、Teng Wang、Qi Shen、Jian-Xin Li
DOI:10.1039/c4cc01444h
日期:——
An n-Bu4NI catalyzed domino reaction that involves selective dual amination of sp(3) C-Hbonds has been developed. The protocol affords a facile and efficient approach to the synthesis of imidazo[1,5-c]quinazolines under mild conditions.
Microwave-Promoted Syntheses of Quinazolines and Dihydroquinazolines from 2-Aminoarylalkanone <i>O</i>-Phenyl Oximes
作者:Fernando Portela-Cubillo、Jackie S. Scott、John C. Walton
DOI:10.1021/jo900629g
日期:2009.7.17
was included in the reaction mixture, fully aromatic quinazolines were produced in high yields by a rapid and convenient process. The method worked well with alkyl, aryl, and heterocyclic aldehydes and for a variety of substituents in the benzenic part of the molecule. Similar reactions employing ketones instead of aldehydes were less efficient. Although some dihydroquinazolines did form, they were accompanied