methyl 4-methyl-6-trimethylsilylcyclohexa-1,4-dienecarboxylate

4-(methoxycarbonyl)phenyl 4-methylbenzenesulfonate

methyl 4-(methanesulfonyloxy)benzoate

对甲苯腈

2-(4-甲基苯基)-2-氧代乙酸乙酯