Hydrochloric Acid → N-tert-butyl-1-benzhydryl-3-methylazetidin-3-amine hydrochloride

HRID 499071Notes

Reaction equation

CS(O[C:6]1([CH3:23])[CH2:9][N:8]([CH:10]([C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)[CH2:7]1)(=O)=O.[C:24]([NH2:28])([CH3:27])([CH3:26])[CH3:25].[ClH:29]>C(O)(C)C.CCOCC>[ClH:29].[C:24]([NH:28][C:6]1([CH3:23])[CH2:9][N:8]([CH:10]([C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)[CH2:7]1)([CH3:27])([CH3:26])[CH3:25]

Participants

Conditions

Temperature: 80 °C

Procedure

To a solution of 1-benzhydryl-3-methylazetidin-3-yl methanesulfonate (2.00 g, 6.23 mmol) in iso-propanol (10 ml) was added tert-butyl amine (1.36 g, 18.63 mmol). The mixture was heated at 80° C. for 3 h. The reaction mixture was then allowed to cool to room temperature and concentrated. The residue was slurried with ethyl acetate and filtered, washing with further ethyl acetate and then concentrated to give a solid. The solid was slurried in ether and hydrochloric acid (20 ml, 2M in ether) was added, then stirred for 10 mins and filtered to provide the title compound as a tan solid (1.69 g, 74%). 1H NMR (DMSO) 1.40 (9H, s), 1.99 (3H, s), 3.85 (2H, brs), 4.11 (2H, brs), 4.71 (1H, brs), 7.35-7.50 (6H, m), 7.70-7.81 (4H, m), 10.23 (1H, s).

Workup

temperatureto cool to room temperature
concentrationconcentrated
filtrationfiltered
washwashing with further ethyl acetate
concentrationconcentrated
customto give a solid
filtrationfiltered

Sources & evidence

ORD record: ord-e4b12d375e1b44638b15b7c8a4dcec43
Source dataset: uspto-grants-2010_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07767672B2

Reaction notes

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