Unexpected Insertion of Nitrogen into a C–C Bond: Access to 2,3-Disubstituted Quinazolinone Scaffolds
作者:Hui-Li Liu、Xiao-Tong Li、Heng-Zhi Tian、Xing-Wen Sun
DOI:10.1021/acs.orglett.1c01235
日期:2021.6.18
A novel, practical, highly efficient, and transition metal free nitrogen insertion reaction for the synthesis of 2,3-disubstituted quinazolinone derivatives was developed. Diverse functionalized 3-indolinone-2-carboxylates and nitrosoarenes with a wide range of substituted nitrosobenzenes, nitrosopyridines, dibenzofuranyl, or dibenzothienyl nitroso compounds worked smoothly to give 2,3-disubstituted
开发了一种新颖、实用、高效且无过渡金属的氮插入反应,用于合成 2,3-二取代喹唑啉酮衍生物。具有多种取代亚硝基苯、亚硝基吡啶、二苯并呋喃基或二苯并噻吩基亚硝基化合物的多种官能化 3-吲哚啉酮-2-羧酸酯和亚硝基芳烃可以顺利地得到 2,3-二取代的喹唑啉酮衍生物,产率高达 69-98%。实现了克级反应,在温和的反应条件下合成了氟喹酮类似物。