Hydrogen chloride-ethyl acetate → (6r)-6-(Methoxymethyl)-n-methyl-n-(1-methylethyl)-6,7,8,9-tetrahydropyrazino[2,3-f][1,4]oxazepin-3-amine hydrochloride

HRID 2188719Notes

Reaction equation

C([N:8]1[CH2:14][C:13]2[N:15]=[CH:16][C:17]([N:19]([CH3:23])[CH:20]([CH3:22])[CH3:21])=[N:18][C:12]=2[O:11][C@@H:10]([CH2:24][O:25][CH3:26])[CH2:9]1)C1C=CC=CC=1.C(OCC)(=O)C.[ClH:33]>CO.[OH-].[OH-].[Pd+2]>[ClH:33].[CH3:26][O:25][CH2:24][C@H:10]1[CH2:9][NH:8][CH2:14][C:13]2[N:15]=[CH:16][C:17]([N:19]([CH3:23])[CH:20]([CH3:21])[CH3:22])=[N:18][C:12]=2[O:11]1

Participants

Conditions

Temperature: 50 °C

Procedure

To a solution of (6R)-8-benzyl-6-(methoxymethyl)-N-methyl-N-(1-methylethyl)-6,7,8,9-tetrahydropyrazino[2,3-f][1,4]oxazepin-3-amine (261 mg) in methanol (7 mL) was added 20% Pd(OH)2/C (40 mg), and the mixture was stirred under a hydrogen atmosphere at 50° C. for 7 hr. The reaction mixture was filtered, and the filtrate was concentrated under reduced pressure. To a solution of the obtained crude product in ethyl acetate (10 mL) was added a 4 N hydrogen chloride-ethyl acetate solution (200 μL), and the mixture was stirred for 30 min. The reaction mixture was filtered, and the obtained crystals were washed with ethyl acetate to give the title compound (136 mg, 61%).

Workup

filtrationThe reaction mixture was filtered
concentrationthe filtrate was concentrated under reduced pressure
customTo a solution of the obtained crude product in ethyl acetate (10 mL)
stirringthe mixture was stirred for 30 min
filtrationThe reaction mixture was filtered
washthe obtained crystals were washed with ethyl acetate

Sources & evidence

ORD record: ord-f8da391d28aa401d855d663f02153458
Source dataset: uspto-grants-2012_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08324201B2

Reaction notes

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