C(O[C:6](=O)[N:7](C)[CH2:8][CH:9]1[CH2:14][CH2:13][O:12][CH2:11][CH2:10]1)(C)(C)C.[ClH:17]>O1CCOCC1>[ClH:17].[CH3:6][NH:7][CH2:8][CH:9]1[CH2:14][CH2:13][O:12][CH2:11][CH2:10]1A solution of N-methyl-N-(tetrahydro-pyran-4-ylmethyl)-carbamic acid tert-butyl ester (740 mg) in 4N hydrochloric acid in 1,4-dioxan (10 ml, ex Aldrich) was stirred at room temperature for 1 h. The dioxan was removed under reduced pressure and the residue triturated with ether. The solid was filtered onto a sinter, washed with ether and dried, to afford N-methyl-N-(tetrahydro-pyran-4-ylmethyl)-amine hydrochloride (460 mg).
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