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. 29, 1984
Filed:
May. 17, 1982
Berkeley W Cue, Jr, Groton, CT (US);
Pfizer Inc., New York, NY (US);
Abstract
A novel process for preparing various 2-substituted-5-aryl-1,2,3,4-tetrahydro-.gamma.-carboline derivatives is provided, which involves (1) quaternizing a corresponding 5-aryl-.gamma.-carboline compound with an appropriate aralkyl halide in the presence of sodium iodide, followed by (2) reduction of the corresponding quaternary carbolinium iodide salt intermediate with an alkali metal hydride to yield the desired final product. The latter compounds are known to be useful as tranquilizing agents, with 2-[4-(p-fluorophenyl)-4-hydroxybutyl]-5-(p-fluorophenyl)-8-fluoro-1,2,3,4- tetrahydro-.gamma.-carboline representing a preferred final product. The aforesaid carbolinium salt intermediates as well as the corresponding 5-aryl-.gamma.-carboline starting materials are all novel compounds.