1-(2-Chloroethyl)piperidine → 1-Piperidinebutyronitrile

HRID 2958

Reaktionsgleichung

Reaktionsgleichung von HRID 2958
ClC1C=C[CH:5]=[CH:4][C:3]=1[CH2:8][C:9]#[N:10].ClCC[N:14]1C[CH2:18][CH2:17][CH2:16][CH2:15]1>CS(C)=O>[N:10]1([CH2:18][CH2:17][CH2:16][C:15]#[N:14])[CH2:5][CH2:4][CH2:3][CH2:8][CH2:9]1

Komponenten

4

Edukt 2

HCID 748271-(2-Chloroethyl)piperidineHCID 76112(o-Chlorophenyl)acetonitrile

Produkt 1

HCID 784031-Piperidinebutyronitrile

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 679Dimethyl SulfoxideLösungsmittel

Versuchsvorschrift

A process for the preparation of a compound of the formula ##STR25## which comprises (a) reacting 2-chlorobenzeneacetonitrile with 1-(2-chloroethyl)piperidine in the presence of a base and DMSO to produce a piperidinebutanenitrile of the formula ##STR26## (b) alkylating the resulting piperidinebenzene-butanenitrile with an alkylating agent in the presence of a base and DMSO to produce a piperidinebutanenitrile of the formula ##STR27## (c) hydrolyzing the resulting piperidine-butanenitrile in toluene with hydrochloric acid to produce a compound of the formula ##STR28## (d) reacting the resulting compound with isopropylamine in a solvent to form an imine of the formula ##STR29## (e) reducing the imine with sodium borohydride in ethanol to form an amine of the formula ##STR30## (f) acetylating the resulting amine with acetic anhydride in a solvent to produce an acetylated amine of the formula ##STR31## (g) hydrolyzing the acetylated amine with sulfuric acid to produce ##STR32## (h) recovering the compound so produced.

Aufarbeitung

  1. customA process for the preparation of a compound of the formula ##STR25## which

Quellen und Nachweise

ORD-Eintrag
ord-8a0d3c88ef6d4534849af2d89a1f5da0
Quelldatensatz
uspto-grants-1998_03
Patentnummer
US05731435

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