An Ethynyl-Substituted 1,5,7-Trimethyl-3-azabicyclo[3.3.1]nonan-2-one as a Versatile Precursor for Chiral Templates and Chiral Photocatalysts
作者:Thorsten Bach、Felix Voss
DOI:10.1055/s-0029-1219920
日期:2010.6
The title compound was synthesized and separated into its enantiomers. The enantiomerically pure alkyne was ligated to several aryl azides and aryl halides. The resulting 7-substituted 1,5,7-trimethyl-3-azabicyclo[3.3.1]nonan-2-ones were used either as chiral templates in the intramolecular [2+2] photocycloaddition of 4-allyloxyquinolone (up to 72% ee) or as a chiral photocatalyst for the intramolecular [2+2] photocycloaddition of 4-(3-butenyloxy)quinolone (up to 79% ee with 10 mol% catalyst).
合成了标题化合物,并将其分离为对映体。对映体纯的炔烃与几种芳基叠氮化物和芳基卤化物连接。得到的 7-取代 1,5,7-三甲基-3-氮杂双环[3.3.1]壬烷-2-酮可用作 4-烯丙氧基喹啉酮分子内[2+2]光环加成的手性模板(ee高达 72%),或用作 4-(3-丁烯氧基)喹啉酮分子内[2+2]光环加成的手性光催化剂(在 10 mol%催化剂的作用下,ee高达 79%)。