Water → HCID 14302201, compound
Reaction equation
[Cl:1][C:2]1[C:10]([Cl:11])=[C:9]2[C:5]([CH2:6][C:7]([CH:14]3[CH2:18][CH2:17][CH2:16][CH2:15]3)([CH3:13])[C:8]2=[O:12])=[CH:4][C:3]=1[OH:19].Br[CH2:21][CH2:22][CH2:23][C:24]#[N:25].C(=O)([O-])[O-].[K+].[K+].O>CN(C)C=O>[CH:14]1([C:7]2([CH3:13])[CH2:6][C:5]3[C:9](=[C:10]([Cl:11])[C:2]([Cl:1])=[C:3]([O:19][CH2:21][CH2:22][CH2:23][C:24]#[N:25])[CH:4]=3)[C:8]2=[O:12])[CH2:18][CH2:17][CH2:16][CH2:15]1Participants
6
Procedure
A mixture of 6,7-dichloro-2-cyclopentyl-5-hydroxy-2-methyl-2,3-dihydro-1H-inden-1-one (6.0 g, 20 mmole), 4-bromobutanenitrile (3.28 g, 22 mmole), and potassium carbonate (3.1 g, 22 mmole) in dimethylformamide (50 ml) was stirred at 60°-65° for four hours. The reaction mixture was poured into water and extracted with diethyl ether. The organic layer was washed successively with water and brine, dried over magnesium sulfate, and concentrated in vacuo to a solid residue (4.7 g). Recrystallization from butyl chloride-hexane afforded the analytically pure title compound, m.p. ca. 112°.
Workup
- extractionextracted with diethyl ether
- washThe organic layer was washed successively with water and brine
- dry with materialdried over magnesium sulfate
- concentrationconcentrated in vacuo to a solid residue (4.7 g)
- customRecrystallization from butyl chloride-hexane
Sources & evidence
- ORD record
- ord-ea67b0d65aa341e6b253201db14594e6
- Source dataset
- uspto-grants-1988_10
- Patent number
- US04775695
Reaction notes
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