3,9a-dimethyl-3a,9a-dihydro-3H-benzo[f]indazole-4,9-dione

2-戊炔

potassium ethyl oxalate

2-chloromethyl-1,4-dimethoxy-3-methyl-naphthalene

2-(1,4-dimethoxy-3-methylnaphthalen-2-yl)ethan-1-amine