4-(hydroxy-quinolin-2-yl-methyl)-4-propyl-piperidine-1-carboxylic acid tert-butyl ester                                                                                                                                                              在
                                                                                                                                         manganese dioxide                                                                                                                                                                                                                               
乙酸乙酯   、                                                                                                  hexanes                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲苯                                                                                  为溶剂,
                                                                                                                                                    反应 3.0h,
                                                                                                                以to provide 124 mg (67%) of 4-propyl-4-(quinoline-2-carbonyl)-piperidine-1-carboxylic acid tert-butyl ester as a colorless oil的产率得到4-propyl-4-(quinoline-2-carbonyl)-piperidine-1-carboxylic acid tert-butyl ester