7-methoxy-5-methyltetral-1-one

重氮甲烷

4-hydroxy-7-methoxy-5-methylnaphthalene-1,2-dione

2-chloro-5-methoxycyclohexa-2,5-diene-1,4-dione

1-methyl-1,3-bis(trimethylsilyloxy)buta-1,3-diene