(1R,3S)-3-(1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-ylcarbamoyl)-2,2,3-trimethyl-cyclopentanecarboxylic acid 在
乙酰氯 作用下,
以
溶剂黄146 为溶剂,
反应 0.5h,
以54%的产率得到3-(1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-1,8,8-trimethyl-3-aza-bicyclo[3.2.1]octane-2,4-dione