Sodium Bicarbonate → HCID 23339016, compound
Reaction equation
Cl.Cl.[CH3:3][C:4]1[CH:9]=[CH:8][CH:7]=[C:6]([CH3:10])[C:5]=1[N:11]([CH:20]1[CH2:25][CH2:24][N:23]([CH2:26][CH2:27][CH3:28])[CH2:22][CH2:21]1)[C:12](=[O:19])[CH2:13][C:14]1[S:15][CH:16]=[CH:17][CH:18]=1.C(=O)([O-])O.[Na+]>>[CH3:3][C:4]1[CH:9]=[CH:8][CH:7]=[C:6]([CH3:10])[C:5]=1[N:11]([CH:20]1[CH2:21][CH2:22][N:23]([CH2:26][CH2:27][CH3:28])[CH2:24][CH2:25]1)[C:12](=[O:19])[CH2:13][C:14]1[S:15][CH:16]=[CH:17][CH:18]=1Participants
3
Conditions
- Temperature
- -10 °C
Procedure
From an aqueous solution of 2.8 parts of N-(2,6-dimethylphenyl)-N-(1-propyl-4-piperidinyl)-2-thiopheneacetamide dihydrochloride, the free base is liberated by alkalization with sodium hydrogen carbonate solution. The free base is extracted with 1,1'-oxybisethane. The extract is dried and evaporated. The oily residue is dissolved in 56 parts of hexane and after cooling to -10° C., the solid free base is precipitated. It is filtered off and dried, yielding 1.6 parts of N-(2,6-dimethylphenyl)-N-(1-propyl-4-piperidinyl)-2-thiopheneacetamide; mp. 62.5° C.
Workup
- extractionThe free base is extracted with 1,1'-oxybisethane
- customThe extract is dried
- customevaporated
- dissolutionThe oily residue is dissolved in 56 parts of hexane
- customthe solid free base is precipitated
- filtrationIt is filtered off
- customdried
Sources & evidence
- ORD record
- ord-9c4541757c0540208d0ac2f5c5aa9616
- Source dataset
- uspto-grants-1978_11
- Patent number
- US04126689
Reaction notes
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