Acetonitrile → 1-Bromo-2-[4-(methanesulfonyl)phenyl]-6-methoxynaphthalene

Participants

Reaction Steps

Combine 1-bromo-2-(4-methanesulfonylphenyl)-3,4-dihydro-6-methoxynaphthalene and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ, 1.8 equiv.) in 10 volumes acetonitrile and 5 volumes of THF. Under nitrogen atmosphere, heat reaction contents to 73-75° C. Monitor reaction progress by GC analysis until reaction, completion. Additional DDQ (0.2-0.3 equiv.) may be required for reaction completion. Cool contents to ambient temperature and add 10 volumes 1 N sodium hydroxide. Stir for approximately 1 hour and filter. Rinse filter cake with 2 volumes water, 3×5 volumes 50% acetonitrile/water and finally 3 volumes methanol. Vacuum dry the filter cake at 65° C. to give the title compound.

Provenance & Evidence