Hydrogenation of pyridyl and quinolyl compounds 2-substituted with a carbonyl group (1a–c and 2b,c) using PtO2 and 1 equiv. of HCl (conditions A) provides clean and total formation of the desired amino alcohol (hydrogenation of the heterocyclic ring and of the carbonyl) while under conditions B1 and/or B2 (concentrated HCl or pure CF3CO2H) the heterocyclic ring remains untouched and other aromatic
使用PtO 2和1当量,氢化被羰基2(1a – c和2b,c)取代的
吡啶基和
喹啉基化合物。在条件B 1和/或B 2(浓HCl或纯CF 3 CO 2 H)下,HCl(条件A)的清洁提供了所需
氨基醇的清洁和完全形成(杂环和羰基的氢化)。环保持不变,而其他芳族部分则被氢化,从而提供了复杂的混合物。当杂环被烷基取代时(奎纳丁3)条件A提供混合物,而在条件B 2(纯CF 3 CO 2 H)下,苯环被干净地氢化,得到纯净的产物。