Intermolecular nitroso Diels–Alder cycloaddition of α-acetoxynitroso derivatives in aqueous medium
作者:Géraldine Calvet、Régis Guillot、Nicolas Blanchard、Cyrille Kouklovsky
DOI:10.1039/b513397a
日期:——
The Diels-Alder cycloadditions of the alpha-acetoxynitroso dienophile in water are reported. The rapid and high yielding synthesis of structurally diverse 3,6-dihydro-1,2-oxazines complements the straightforward elaboration of aminoalcohols obtained from the alpha-acetoxynitroso derivative in anhydrous medium. A rationale for this solvent-dependent product distribution is proposed.
报道了水中的α-乙酰氧基亚硝基二烯亲和物的Diels-Alder环加成反应。结构多样的3,6-二氢-1,2-恶嗪的快速高产合成补充了从α-乙酰氧基亚硝基衍生物在无水介质中获得的氨基醇的直接制备。提出了这种依赖溶剂的产物分布的原理。