Four-component quinazoline synthesis from simple anilines, aromatic aldehydes and ammonium iodide under metal-free conditions
作者:Jinjin Chen、Dan Chang、Fuhong Xiao、Guo-Jun Deng
DOI:10.1039/c8gc02654h
日期:——
A four-component procedure for the preparation of substituted quinazolines from anilines, aromaticaldehydes and ammonium iodide is described. The C–H bond ortho to the amino group in anilines was directly functionalized undermetal-freeconditions. Two aldehydes were involved in this reaction and ammonium iodide was used as one of the nitrogen sources. This reaction provides a strategy for the facile
Csp<sup>2</sup>-O and C-C Bond Formation via Pd-Catalyzed Coupling Reaction of 2,4-Dichloroquinazoline
作者:Alka Sharma、Vijay Luxami、Kamaldeep Paul
DOI:10.1002/jhet.2330
日期:2016.1
An efficient palladium‐catalyzed C–O and subsequent C–Cbondformation of 2,4‐dichloroquinazoline have been described. The designed strategy results in the synthesis of novel 2‐arylated quinazolin‐4‐ones framework with various aryl/heteroaryl boronic acids in moderate to good yields along with 2,4‐diarylated quinazolines. This methodology offers a direct transformation of aryl halides to aryl alcohols/ketone
One-pot synthesis of quinazoline derivatives via [2+2+2] cascade annulation of diaryliodonium salts and two nitriles
作者:Xiang Su、Chao Chen、Yong Wang、Junjie Chen、Zhenbang Lou、Ming Li
DOI:10.1039/c3cc43216e
日期:——
An efficient one-pot approach to multiple substituted quinazolines with diaryliodonium salt 1, and two nitriles 2 has been presented. The reaction enables great flexibility of the substitution patterns on quinazolines and is applicable to two different nitriles to give a regio-selective product.