Synthesis of Benzoxazines, Quinazolines and 4H-Benzo[e][1,3]thiazine by ANRORC Rearrangements of 1,2,4-Oxadiazoles
作者:Alan Katritzky、Bogdan Draghici、Bahaa El-Gendy
DOI:10.1055/s-0031-1289673
日期:2012.2
1,2,4-Oxadiazoles undergo ANRORC (addition of nucleophile, ring-opening and ring-closure) rearrangements upon reaction with excess of n-butyllithium to give benzoxazines, benzothiazines, and quinazolines in good yields under mild conditions. N,O-heterocycles - rearrangements - benzoxazines - quinazolines - benzothiazines
1,2,4-恶二唑经历ANRORC(一个的ddition Ñ ucleophile,- [R ing- ö pening和- [R ing- Ç losure)重排在与过量的反应Ñ丁基锂,得到苯并恶嗪,苯并噻嗪,并且在在温和良好的收率的喹唑啉条件。 N,O杂环-重排-苯并恶嗪-喹唑啉-苯并噻嗪