Oxidative Intramolecular [4+2]Cycloaddition of <i>o</i>-[(ω-Phenylthioethynyl)acyl]phenols Followed by the Aromatic Pummerer-type Reaction: A Novel Preparation of the <i>peri</i>-Hydroxy Dihydroquinone Structure
作者:Shuji Akai、Kiyosei Iio、Yoshifumi Takeda、Hiroshi Ueno、Yasujuki Kita
DOI:10.1055/s-1997-5787
日期:1997.3
The combination of the oxidative intramolecular [4+2]cycloaddition of o-acylphenol derivatives 10a,b and 16 having the Ï-phenylthioethynyl group in the acyl chain and the Pummerer-type reaction of the cyclization products afforded the peri-hydroxy dihydroquinones 9a,b and 18 in good overall yields.
将酰基链中含有Ï-苯硫乙炔基的邻酰基苯酚衍生物 10a,b 和 16 的氧化性分子内 [4+2]cycloaddition 与环化产物的 Pummerer 型反应结合起来,可以得到过羟基二氢醌 9a,b 和 18,总产率很高。