作者:Sooyun Choi、Melody C. Guo、Gavin M. Coombs、Scott J. Miller
DOI:10.1021/acs.joc.2c02727
日期:——
The atroposelective synthesis of N-aryl 1,2,4-triazoles was developed. A cyclodehydration reaction was rendered asymmetric with the use of a chiral phosphoric acid catalyst to afford atropisomeric N-aryl 1,2,4-triazoles in up to 91:9 er. Recrystallization of the isolated heterocycle further enriched the atropisomeric ratio of several analogs to 99:1 er or greater. A divergent and substrate-dependent
开发了N-芳基1,2,4-三唑的阻转选择性合成方法。使用手性磷酸催化剂使环脱水反应变得不对称,得到高达 91:9 er 的阻转异构N-芳基 1,2,4-三唑。分离出的杂环的重结晶进一步将几种类似物的阻转异构体比率富集至99:1er或更高。还公开了产生不同杂环产物的不同且底物依赖性反应途径。