Lewis acid-catalyzed 2-arylquinazoline formation from N′-arylbenzimidamides and paraformaldehyde
作者:Xiufang Cheng、Huamin Wang、Fuhong Xiao、Guo-Jun Deng
DOI:10.1039/c6gc02319c
日期:——
An efficient procedure for the synthesis of 2-arylquinazolines from N'-arylbenzimidamides has been developed under transition-metal-free conditions. In this process, stable and low toxicity paraformaldehyde was used as the carbon source....
An efficient three-component domino reaction of 2-bromoaldehydes, benzylamines, and sodium azide has been developed for the synthesis of quinazoline derivatives. This dominoprocess involves copper-catalyzed SNAr, oxidation/cyclization, and denitrogenation sequences. The mild catalytic system enabled the effective construction of three C–N bonds in one operation.
已经开发了2-溴醛,苄胺和叠氮化钠的有效的三组分多米诺反应,用于合成喹唑啉衍生物。这种多米诺骨牌工艺涉及铜催化的S N Ar,氧化/环化和脱氮序列。温和的催化系统使一次操作即可有效构建三个C–N键。
One‐Pot Synthesis of Quinazolines via Elemental Sulfur‐Mediated Oxidative Condensation of Nitriles and 2‐(Aminomethyl)anilines
elemental sulfur-mediated oxidative condensation of nitriles and 2-(aminomethyl)anilines was developed. The reaction was carried out under metal-/solvent-free conditions, tolerates a wide range of functional groups to provide the corresponding products in 56%-91% yield, and can be performed on a gram-scale. The UV/Vis absorption and fluorescence spectra of several product derivatives were measured to study
Herein, palladium(II)-catalyzed halogenation of 2-phenylquinazolines using N-halosuccinimides as halogen sources was described via C−H activation under mild reaction conditions. A series of halogen-substituted 2-arylquinazolines were synthesized through C−H functionalization.
本文描述了使用N-卤代琥珀酰亚胺作为卤素源的钯 (II) 催化的 2-苯基喹唑啉卤化反应,该反应通过 C-H 活化在温和的反应条件下进行。通过 C-H 官能化合成了一系列卤素取代的 2-芳基喹唑啉。