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 DielsâAlder cycloaddition reactions respectively. Reaction of 4 with DMAD gives O-arylated hydroxylamine 13, the structure of which is confirmed by crystallographic analysis.
本文介绍了
羟胺基试剂、烯烃 2、
炔烃 3 和
丁二烯变体
吡喃酮 4 的合成过程。虽然炔 3 的相对不稳定性限制了进一步的评估,但烯 2 和
吡喃酮 4 分别成功地参与了 1,3-二极和 DielsâAlder 环加成反应。4 与
DMAD 反应生成 O-芳基化的
羟胺 13,其结构已通过晶体分析得到证实。