Amino-1-[(halophenyl)-lower-alkyl]piperidines

Details Amino-1-[(halophenyl)-lower-alkyl]piperidines Amino-1-[(halophenyl)-lower-alkyl]piperidines

1982-03-29

1983-08-02

Milestone, Norma S.

Organic compounds -- part of the class 532-570 series

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

546186, C07D41306, C07D40106

Patent

active

043967655

ABSTRACT:
1-[(3- or 4-Benzoylphenyl)-lower-alkyl]-[(CH.sub.2).sub.n -N.dbd.B]-substituted-piperidines useful as anti-asthmatic, anti-allergic, anti-cholinergic, bronchodilator and anti-inflammatory agents, are prepared by alkylation of an appropriate substituted piperidine with a (3- or 4-benzoylphenyl)-lower-alkyl halide or tosylate; by reaction of a 1-[2-(3- or 4-lithiophenyl)-lower-alkyl]-[(CH.sub.2).sub.n -N.dbd.B]-substituted-piperidine with benzonitrile and hydrolysis of the resulting benzimidoyl compound; or by reduction of a 1-[.alpha.-(3- or 4-benzoylphenyl)-lower-alkanoyl]-[(CH.sub.2).sub.n -N.dbd.B]-substituted-piperidine. The analogous carbinols are prepared by reduction, with an alkali metal borohydride, of the ketone.

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