benzyl chloroformate
2-Benzyloxycarbonylamino-2-(4-methyl-benzyl)-malonic acid diethyl ester
2-Benzyloxycarbonylamino-2-(4-methyl-benzyl)-malonic acid monoethyl ester
2-Benzyloxycarbonylamino-3-p-tolyl-propionic acid ethyl ester
diethyl 2-benzyloxycarbonylaminomalonate