反应详情

Using a procedure similar to that described above in Example 58A, 26 g. of 3,4-dihydroxyphenyl tert-butylaminomethyl ketone hydrochloride in 300 ml. of N,N-dimethylformamide under an atmosphere of nitrogen was reacted with 16 g. of sodium methoxide and then with 14 g. of benzoyl chloride. The product was isolated as the free base, 3-hydroxy-4-(benzoyloxy)phenyl tert-butylaminomethyl ketone [20 g.; m.p 150°-165° C. (dec.) (uncorr.)], which was converted to 13 g. of its methanesulfonate, m.p. 245° C. (dec.)(uncorr.). By catalytically hydrogenating this salt, using a procedure similar to that described above in Example 30B, there is obtained 3-hydroxy-4-(benzoyloxy)-alpha-(tert-butylaminomethyl)benzyl alcohol methanesulfonate.