Synthesis and reactivity of a novel group of hydroxylamine-containing 2π- and 4π-components
Abstract
The synthesis of hydroxylamine-based reagents, alkene 2, alkyne 3 and a butadienyl variant pyrone 4 are described. While the relative instability of alkyne 3 has limited further evaluation, alkene 2 and pyrone 4 successfully participate in 1,3-dipolar and Diels–Alder cycloaddition reactions respectively. Reaction of 4 with DMAD gives O-arylated hydroxylamine 13, the structure of which is confirmed by crystallographic analysis.