54490-80-1
2-chloro-6-methoxycyclohexa-2,5-diene-1,4-dione
+
63446-77-5
1-methyl-1,3-bis(trimethylsilyloxy)buta-1,3-diene
74-88-4
甲基碘
→
89827-85-0
2,6-dimethoxy-8-methylnaphthalene-1,4-dione