Synthesis of Benzimidazolo[2,3-<i>b</i>]quinazolinone Derivatives via a One-pot Multicomponent Reaction Promoted by a Chitosan-based Composite Magnetic Nanocatalyst
作者:Ali Maleki、Morteza Aghaei、Nakisa Ghamari
DOI:10.1246/cl.141074
日期:2015.3.5
A practical and green approach for the one-pot multicomponent synthesis of tetraheterocyclic benzimidazolo[2,3-b]quinazolinones has been described via the condensation of 2-aminobenzimidazole or 2-aminobenzothiazole, dimedone, and various aldehydes using Fe3O4@chitosan as an environmentally benign and reusable nanocomposite catalyst in good to excellent yields.
Amberlyst-15® in PEG: A novel catalytic system for the facile and efficient one-pot synthesis of benzothiazolo-[2,3-b]-quinazolinone derivatives
作者:Kidwai Mazaahir、Chauhan Ritika、Bhatnagar Divya
DOI:10.1007/s11426-012-4665-z
日期:2012.10
A simple and convenient approach for the synthesis of tetraheterocyclic benzothiazolo-[2,3-b]-quinazolin-1-ones has been developed utilizing the MCR methodology, which involves the condensation of 2-aminobenzothiazole, cyclic β-diketones and various aldehydes using Amberlyst-15® in PEG 400 as an environmentally benign and reusable catalyst system. Environmental benignity, recyclability, cost-effectiveness
利用MCR方法开发了一种简单方便的合成四杂环苯并噻唑-[2,3 - b ]-喹唑啉-1-酮的方法,该方法涉及2-氨基苯并噻唑,环状β-二酮和各种醛的缩合反应。的Amberlyst-15 ®在PEG 400作为环境友好和可重复使用的催化剂体系。环境友好,可回收利用,成本效益,易于加工和优异的收率是这一一锅法的主要特点。