Inverse electron demand diels-alder reactions of 3-carbomethoxy-2-pyrones. Controlled introduction of oxygenated aromatics: benzene, phenol, catechol, resorcinol, pyrogallol annulation.
作者:Dale L. Boger、Michael D. Mullican
DOI:10.1016/s0040-4039(01)99816-8
日期:1983.1
m-CPBA] allows the preparation of a full range of oxygen substituted aromatics from a single intermediate and represent methods of benzene, 1-, 2- or 3-phenol, symmetrical or unsymmetrical catechol, resorcinol and pyrogallol annulation.
3-碳甲氧基-2-吡喃酮与N-乙烯基-2-吡咯烷酮,碳酸亚乙烯酯,1,1-二甲氧基乙烯或1,1,2-三甲氧基乙烯的四个逆电子需求Diels-Alder反应之一的实现,然后选择两个标准反应顺序:(1)除去甲氧羰基(NaOH;铜粉,喹啉,Δ)或(2)将其转化为乙酸盐[NaOH:(CO)2 Cl 2:(CH 3)2 CuLi:m- CPBA]允许从单一中间体制备全范围的氧取代的芳族化合物,并代表苯,1-,2-或3-苯酚,对称或不对称的邻苯二酚,间苯二酚和邻苯三酚环化的方法。