2-Ethyl-7-(phenylmethyl)-2,7-diazaspiro[4.4]nonane dihydrochloride → 2-Ethyl-2,7-diazaspiro[4.4]nonane dihydrochloride
Reaction equation
[ClH:1].Cl.[CH2:3]([N:10]1[CH2:14][CH2:13][C:12]2([CH2:18][CH2:17][N:16](CC)[CH2:15]2)[CH2:11]1)[C:4]1C=CC=CC=1>CO.[Pd]>[ClH:1].[ClH:1].[CH2:3]([N:10]1[CH2:14][CH2:13][C:12]2([CH2:18][CH2:17][NH:16][CH2:15]2)[CH2:11]1)[CH3:4]Participants
4
Reactant 1
Product 1
Reagents, catalysts & solvents 2
Procedure
A solution of 9.5 g (0.03 mole) 2-benzyl-7-ethyl-2,7-diazaspiro[4.4]nonane dihydrochloride in 100 ml methanol was hydrogenated with 1.0 g 20% palladium on carbon catalyst at 4.5×105 Pa for 22 hours. After filtration, the solution was concentrated to a syrup and crystallized from acetonitrile to afford 6.7 g of the title compound, mp 168°-172° C.
Workup
- filtrationAfter filtration
- concentrationthe solution was concentrated to a syrup
- customcrystallized from acetonitrile
Sources & evidence
- ORD record
- ord-45330e10a3424b6ca50511245fbb8074
- Source dataset
- uspto-grants-1989_04
- Patent number
- US04822801
Reaction notes
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