The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 1992
Filed:
Sep. 22, 1989
Applicant:
Inventor:
Egidio Molinari, Longoneal Segrino, IT;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546240 ; 346241 ;
Abstract
A process for preparing alpha-(alkylphenyl)-4-(hydroxy diphenylmethyl)-1-piperidine butanols of formula (I) ##STR1## in which R is a C.sub.1 -C.sub.5 alkyl, by reacting an isonipecotate of formula (II): ##STR2## in which R' is a C.sub.1 -C.sub.5 alkyl or benzyl, with 1-(alkylphenyl)-4-chlorobutanol to obtain the compound (IV) directly ##STR3## and reacting (IV) with phenylmagnesium halide (V) to obtain (I).