The Rearrangement Route to 2-Azabicyclo[2.1.1]hexanes. Solvent and Electrophile Control of Neighboring Group Participation
作者:Grant R. Krow、Guoliang Lin、Deepa Rapolu、Yuhong Fang、Walden S. Lester、Seth B. Herzon、Philip E. Sonnet
DOI:10.1021/jo034394z
日期:2003.6.1
0]hex-5-enes 5 with halonium ion electrophiles were studied in polar and nonpolar aprotic solvents and also in protic media with the aim of controlling nitrogen neighboring group participation. Specifically, for bromoniumions nitrogen participation is facilitated by the polar aprotic solvent nitromethane and by the poorly nucleophilic protic solvent acetic acid. Alkene 5b and bromine/nitromethane afford only