Reaction of Allenyl Esters with Sodium Azide: An Efficient Synthesis of <i>E</i>-Vinyl Azides and Polysubstituted Pyrroles
作者:Xian Huang、Ruwei Shen、Tiexin Zhang
DOI:10.1021/jo062376m
日期:2007.2.1
The nucleophilic addition of sodium azide to 1,2-allenyl esters can generate vinyl azides in excellent yields with excellent regio- and stereoselectivities. Moreover, pyrroles are synthesized using 1-allyllic 1,2-allenyl esters as substrates in t-BuOH at 65 °C. The sequential reaction for pyrroles is developed on the basis of a novel domino process involving nucleophilic addition, cycloaddition, denitrogenation
将叠氮化钠亲核加成到1,2-烯基酯上可以以优异的收率和极好的区域选择性和立体选择性生成叠氮化乙烯基。此外,在65°C的t -BuOH中,使用1-烯丙基1,2-烯基酯作为底物合成吡咯。在涉及亲核加成,环加成,脱氮和芳构化的新型多米诺过程的基础上开发了吡咯的顺序反应。