Quinazoline Synthesis via Rh(III)-Catalyzed Intermolecular C–H Functionalization of Benzimidates with Dioxazolones
作者:Jie Wang、Shanke Zha、Kehao Chen、Feifei Zhang、Chao Song、Jin Zhu
DOI:10.1021/acs.orglett.6b00691
日期:2016.5.6
An efficient double C–N bond formation sequence to prepare highly substituted quinazolines utilizing benzimidates and dioxazolones under the catalytic redox-neutral [Cp*RhCl2]2/AgBF4 system, where dioxazolones could work as an internal oxidant to maintain the catalytic cycle, is reported. N-Unsubstituted imine not only acts as a directing group but also functions as a nucleophile in postcoupling cyclization
在催化氧化还原中性[Cp * RhCl 2 ] 2 / AgBF 4体系下,利用苯甲二酸盐和二恶唑酮制备高效取代的C–N键形成顺序的方法,其中二恶唑酮可作为内部氧化剂来维持催化循环,被报道。N-未取代的亚胺在后偶联环化中不仅充当引导基团,而且还充当亲核试剂,并且二恶唑酮充当访问杂环的偶联伴侣。