通过新颖的钯催化,银促进的环丙基苯甲酰胺的分子内环化反应,合成了许多难以获得的苯并[ c ]氮杂-1-酮。这种生物学上重要的分子类别是从容易获得的起始原料以高效且高产的方式制备的。芳基溴化物和碘化物都是有效的转化底物。机理研究表明,该反应通过环丙基C(sp 3)–H裂解步骤进行,然后进行开环,去质子化和还原消除反应。
PYRROLO[2,3-D]PYRIMIDINYL, PYRROLO[2,3-B]PYRAZINYL AND PYR-ROLO[2,3-D]PYRIDINYL ACRYLAMIDES
申请人:Pfizer Inc.
公开号:US20150158864A1
公开(公告)日:2015-06-11
The present invention provides pharmaceutically active pyrrolo[2,3-d]pyrimidinyl and pyrrolo[2,3-d]pyridinyl acrylamides and analogues thereof. Such compounds are useful for inhibiting Janus Kinase (JAK). This invention also is directed to compositions comprising methods for making such compounds, and methods for treating and preventing conditions mediated by JAK.
An electrochemical method is presented to construct 1,3-oxazines by the oxidative ring-opening of cyclopropylamides with alcohols. This method avoids the use of external oxidants and thus shows good functional group tolerance. The substrate scope covers primary, secondary, and tertiary alcohols as well as (hetero)aryl amide-substituted cyclopropanes.