[CH2:1]=[O:2].O[CH:4]1[CH:11]2[CH2:12][CH:7]3[CH2:8][CH:9]([CH2:13][CH:5]1[CH2:6]3)[CH2:10]2.[ClH:14]>>[Cl:14][CH2:1][O:2][CH:4]1[CH:11]2[CH2:12][CH:7]3[CH2:8][CH:9]([CH2:13][CH:5]1[CH2:6]3)[CH2:10]2Paraformaldehyde was added to 2-hydroxyadamantane, and a hydrogen chloride gas was injected at 2.5 equivalent amounts per this 2-hydroxyadamantane. Then, the reaction was conducted at a temperature of 50° C. for 12 hours. After the completion of the reaction, the product was distillated under reduced pressure so as to obtain 2-adamantyl chloromethyl ether (compound 2) represented by the following chemical formula (59).
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