Zheng Bing, Li Minyan, Gao Gui, He Yuying, Walsh Patrick J
Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China; Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States.
Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States.
Adv Synth Catal. 2016 Jun 30;358(13):2156-2162. doi: 10.1002/adsc.201600090. Epub 2016 Jun 15.
A Palladium-catalyzed α-arylation of sulfonamides with aryl chlorides is presented. A Buchwald type precatalyst formed with Kwong's indole-based ligand enabled this transformation to be compatible with a large variety of methyl sulfonamides and aryl chlorides in good to excellent yields. Importantly, under the optimized reaction conditions, only mono-arylated products were observed. This method has been applied to the efficient synthesis of sumatriptan, which is used to treat migraines.
本文介绍了一种钯催化的磺酰胺与芳基氯的α-芳基化反应。由邝氏吲哚基配体形成的布赫瓦尔德型预催化剂使这种转化能够与多种甲基磺酰胺和芳基氯兼容,产率良好至优异。重要的是,在优化的反应条件下,仅观察到单芳基化产物。该方法已应用于用于治疗偏头痛的舒马曲坦的高效合成。