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Magnesium Bromide carbonyl condensations

The additional carbon atom required for building the five-membered ring D is then added by means of methyl-magnesium bromide (16-4). The ester at future C15 is reduced to a carbinol by reaction with lithium aluminum hydride. Swern oxidation (dimethyl sulfoxide and oxalyl chloride) next serves to oxidize each of the two resulting hydroxyl groups to carbonyl functions (16-5). Dieckmann-like base-catalyzed condensation then closes the five-membered ring... [Pg.35]

See other pages where Magnesium Bromide carbonyl condensations is mentioned: [Pg.209]    [Pg.211]    [Pg.10]    [Pg.443]    [Pg.186]    [Pg.443]    [Pg.289]    [Pg.167]    [Pg.60]    [Pg.144]   
See also in sourсe #XX -- [ Pg.254 ]



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