Patent ID: 6852885

Claim:
A method for producing a high purity alkyladamantyl ester at a purity of 89.7% or higher represented by the following formula (1): wherein R 3 is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms and R 4 is a hydrogen atom or a methyl group which contains as impurities, sublimable materials which sublime at temperatures lower than a boiling point of the alkyladamantyl ester, comprising the steps of distilling out a compound having a boiling point lower than that of the alkyladamantyl ester by carrying out the distillation in the presence of the compound having a boiling point lower than that of the alkyladamantyl ester so as to cause the compound to rinse out sublimable materials sublimed and adhered to the inside of a distillation device or prevent sublimable materials from adhering to the inside of the distillation device and then distilling out and recovering the alkyladamantyl ester.