Abstract: I-Adamantyl chloroformate was prepared from I-adamantanol and phosgene. The chloroformate was allowed to react with amino acids to give the corresponding 1- adamantyloxycarbonyl (t-AdOC) derivatives. Several of them could be obtained in crystalline form while the corresponding t-butyloxycarbonyl derivatives have either not been reported or have been described as oils or amorphous solids. The adamantyloxycarbonylamino acids ...