2-甲基-4-氧-4-苯基丁酸

diethyl 2-(iodomethyl)propanedioate

diethyl 2-methyl-2-phenacylpropanedioate

diethyl 2-(2-methoxyethyl)-2-methylpropanedioate

diethyl 2-methyl-2-(1,2-thiazol-3-ylmethyl)propanedioate