4-[(3-Ethylphenyl)amino]-1-methyl-1H-pyrazole-5-carboxylic acid 、
4-[(3-fluorophenyl)amino]-1-methyl-1H-pyrazole-5-carboxylic acid 、 9-chloro-8-ethyl-1-methyl-1H-pyrazolo[4,3-b]quinoline 、 9-chloro-6-ethyl-1-methyl-1H-pyrazolo[4,3-b]quinoline 在
silica gel 、
ethyl acetate n-hexane 作用下,
以
溶剂黄146 为溶剂,
反应 8.0h,
以to afford 75 mg (41%) of 8-ethyl-1-methyl-1,4-dihydro-9H-pyrazolo[4,3-b]quinolin-9-one as a solid and 103 mg (56%) of 6-ethyl-1-methyl-1,4-dihydro-9H-pyrazolo[4,3-b]quinolin-9-one as a solid的产率得到8-ethyl-1-methyl-1,4-dihydro-9H-pyrazolo[4,3-b]quinolin-9-one