stable axially chiral atropisomers. These axially chiral alpha-oxoamides undergo enantiospecific photochemical gamma-Hydrogen abstraction in CHCl(3) to yield beta-lactams with high enantioselectivity (e.r. approximately 90:10) in solution. The extent of enantioselectivity was found to be dependent on the reaction temperature.
发现在 N-苯基部分上具有邻叔丁基取代的 α-氧代酰胺 1 是稳定的轴向手性阻转异构体。这些轴向手性 α-氧代酰胺在 CHCl(3) 中进行对映特异性光
化学γ-氢提取,以在溶液中产生具有高对映选择性(大约 90:10)的 β-内酰胺。发现对映选择性的程度取决于反应温度。