541-41-3
氯甲酸乙酯
+
39574-04-4
4-Oxazolidinecarboxylic acid, 5,5-dimethyl-2-thioxo-, ethyl ester
→
50684-91-8
diethyl 5,5-dimethyl-2-sulfanylidene-1,3-oxazolidine-3,4-dicarboxylate
50685-04-6
ethyl 2-(ethoxycarbonylamino)-3-methylbut-2-enoate