PBr3-mediated unexpected reductive deoxygenation of α-aryl-pyridinemethanols: synthesis of arylmethylpyridines
作者:Yosuke Nishigaya、Kentaro Umei、Daisuke Watanabe、Yasushi Kohno、Shigeki Seto
DOI:10.1016/j.tet.2016.02.005
日期:2016.3
PBr3-mediated reductive deoxygenation of α-aryl-pyridinemethanols to provide arylmethylpyridines is described, the alcohol substrate scope is explored, free radical trap TEMPO (2,2,6,6-tetramethyl-1-piperidinyloxy) is introduced, and the hydrogen source of the methylene product is defined. The unexpected reaction enabled us to prepare previously inaccessible, novel EP1 antagonists.
描述了PBr 3介导的α-芳基吡啶甲醇的还原性脱氧以提供芳基甲基吡啶,探索了醇底物的范围,引入了自由基捕集剂TEMPO(2,2,6,6-四甲基-1-哌啶基氧基),以及氢定义了亚甲基产物的来源。出乎意料的反应使我们能够制备出以前无法获得的新型EP 1拮抗剂。