Preparation of Methyl 2-Arylpropanoates by the Reaction of 2-Hydroxypropiophenone Dimethyl Acetals with Sulfuryl Chloride in the Presence of an Amide or a Weak Base
作者:Takayoshi Yamauchi、Kaneaki Hattori、Kenji Nakao、Kentaro Tamaki
DOI:10.1246/bcsj.60.4015
日期:1987.11
Treatment of 2-hydroxypropiophenone dimethyl acetals [p-RC6H4C(OMe)2CH(OH)Me] (1; R=H, i-Bu, OMe, Ph, Br) with sulfuryl chloride in the presence of an amide or a weak base affords methyl 2-arylpropanoates (2) in good to excellent yields via 1,2-aryl migration of 1. The hydrolysis of 2 leads to the corresponding acids, some of which are pharmaceutically important compounds having nonsteroidal anti-inflammatory
在酰胺或弱碱存在下用磺酰氯处理 2-羟基苯丙酮二甲基缩醛 [p-RC6H4C(OMe)2CH(OH)Me] (1; R=H, i-Bu, OMe, Ph, Br)通过 1 的 1,2-芳基迁移以良好至优异的产率提供 2-芳基丙酸甲酯 (2)。 2 的水解产生相应的酸,其中一些是具有非甾体抗炎和镇痛活性的药学上重要的化合物。芳基迁移立体定向地进行,β-碳原子的构型完全反转。