反应详情

Following a procedure similar to that described in Example 2A above, when 3-hydroxy-4-(pivalyloxy)phenyl tert-butylaminomethyl ketone is interacted with one equivalent of sodium methoxide and the resulting sodium phenolate salt is reacted with pivalyl chloride there is obtained 3,4-bis(pivalyloxy)phenyl tert-butylaminomethyl ketone, which reacts with hydrochloric acid to yield the hydrochloride salt. When this hydrochloride is catalytically hydrogenated, using the procedure described above in Example 2B, there is obtained 3,4-bis(pivalyloxy)-alpha-(tert-butylaminomethyl)benzyl alcohol hydrochloride. The ketone intermediate and the alcohol product obtained in this manner are identical with the ketone and the alcohol described above in Example 5A and 5B, respectively.