反応式
[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[CH:8]([CH2:11][CH2:12][N:13]1[CH2:18][CH2:17][CH2:16][CH2:15][CH2:14]1)[C:9]#[N:10].[CH3:19][O:20][CH:21]([O:24][CH3:25])[CH2:22]Br.[OH-].[K+]>CS(C)=O>[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]([CH2:22][CH:21]([O:24][CH3:25])[O:20][CH3:19])([CH2:11][CH2:12][N:13]1[CH2:18][CH2:17][CH2:16][CH2:15][CH2:14]1)[C:9]#[N:10]参加物
実験手順
The synthesis outlined in Scheme II comprises (a) reacting commercially available 2-chlorobenzeneacetonitrile with 1-(2-chloroethyl)piperidine in the presence of a base, such as sodium hydroxide, and methyltributylammonium chloride to give (±)-α-(2-chlorophenyl)-1-piperidinebutanenitrile; (b) alkylating the resulting piperidinebutanenitrile with bromoacetaldehyde dimethyl acetal in dimethylsulfoxide (DMSO) in the presence of potassium hydroxide to produce (±)-α-(2-chlorophenyl)-α-(2,2-dimethoxyethyl)-1-piperidinebutanenitrile; (c) hydrolyzing the resulting piperidinebutanenitrile in a solvent such as toluene with hydrochloric acid to produce (±)-α-(2-chlorophenyl)-α-(2-oxoethyl)-1-piperidinebutanenitrile; (d) reacting the resulting piperidinebutanenitrile with isopropylamine in a solvent such as toluene in the presence of potassium carbonate to form an imine substituted piperidinebutanenitrile; (e) reducing the resulting imine substituted piperidinebutanenitrile with sodium borohydride and ethanol to form an amino substituted piperidinebutanenitrile; (f) acetylating the resulting amino substituted piperidinebutanenitrile with acetic anhydride in a solvent such as toluene to produce an acetylated amino substituted piperidinebutanenitrile; (g) hydrolyzing the resulting acetylated amino substituted piperidinebutanenitrile with sulfuric acid to produce an acetylated amino substituted-1-piperidinebutanamide; and (h) isolating the resulting 1-piperidinebutanamide.
出典と根拠
- ORDレコード
- ord-d74b87b2489c48b89d16e8e1866c62a5
- 出典データセット
- uspto-grants-1998_03
- 特許番号
- US05731435
関連ノート
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