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1. (WO1998050334) PRODUCTION OF BROMINATED METHOXYNAPHTHALENE COMPOUNDS

Pub. No.:    WO/1998/050334    International Application No.:    PCT/US1998/006995
Publication Date: Fri Nov 13 00:59:59 CET 1998 International Filing Date: Wed Apr 08 01:59:59 CEST 1998
IPC: C07C 41/22
Applicants: ALBEMARLE CORPORATION
Inventors: SABAHI, Mahmood
Title: PRODUCTION OF BROMINATED METHOXYNAPHTHALENE COMPOUNDS
Abstract:
Bromine is generated in situ in a mixture formed by mixing together 2-methoxynaphthalene, hydrogen bromide, at least one peroxidic compound and a chemically indifferent organic liquid solvent or diluent under conditions effective to produce 1,6-dibromo-2-methoxynaphthalene. Optionally, but preferably, water is also included in the mixture. Regioselective hydrodebromination of 1,6-dibromo-2-methoxynaphthalene with hydrogen and tungsten carbide enables production of 2-bromo-6-methoxynaphthalene.