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Sodium benzylselenolate

Sodium benzylselenolate in refluxing DMF is a superior reagent for O-demethylation at the hindered 1-, 8-, and 11-positions of the aporphine nucleus. Methylenedioxy-functions survive the reaction.47 The microbial transformation of glaucine produces mainly norglaucine and predicentrine (25).48... [Pg.131]

Thalicarpine (52) can be O-demethylated at C-l and at C-4", using sodium benzylselenolate.47 This same alkaloid can also be converted into (+)-hernan-dalinol (54), using the micro-organism Streptomyces punipalus.60 Additionally,... [Pg.132]

Good yields of monophenolic bases are obtained owing to regioselective 0-demethylation by sodium benzylselenolate in refluxing DMF. The affected positions are C-1, C-8, and C-11, while methylenedioxy groups survive the reaction. Two examples are cited below. ... [Pg.145]

See other pages where Sodium benzylselenolate is mentioned: [Pg.418]    [Pg.92]    [Pg.418]    [Pg.92]   
See also in sourсe #XX -- [ Pg.92 , Pg.162 ]



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