The reductomethylation of 2-(3-methoxyphenyl)-2-methylpropylamine (I) with formaldehyde and sodium cyanoborohydride in acetonitrile gives the dimethylamino compound (II), which is treated with refluxing 48% HBr to yield the phenol (III). Finally, this compound is condensed with 4-(4-morpholinyl)butyl isocyanate (IV) by means of Na in toluene. The intermediate isocyanate (IV) has been obtained by reaction of 4-(4-morpholinyl)butylamine with phosgene and triethylamine in toluene.