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Pyrrolidin-2-ones, 4-methylene, synthesis

The most straightforward synthesis of the corrin nucleus applied an enam-ine as d -synthon for one pyrrolidine ring bearing the prospective methine bridge as an exocyclic methylene group. Deprotonation of the enamine nitrogen produced the necessary carbanion. As an a -acceptor, an alkylated imidic ester was chosen. This was available by alkylation of a pyrrolidone lactam oxygen with the... [Pg.390]

See other pages where Pyrrolidin-2-ones, 4-methylene, synthesis is mentioned: [Pg.260]    [Pg.55]    [Pg.260]    [Pg.82]    [Pg.274]    [Pg.137]    [Pg.12]    [Pg.599]    [Pg.279]    [Pg.366]   


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