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• W1520702924 endingPage "1962" @default.
• W1520702924 startingPage "1955" @default.
• W1520702924 abstract "The synthesis of phenanthro-quinolizidine and -indolizidine alkaloids, cryptopleurine (8) and antofine (9) via directed ortho metallation of the common phenanthrene (1) are described (Scheme 2). The utility of this strategy as a new N-heteroring annelation method (Scheme 1) is illustrated by the preparation of other aromatic ring-fused quinolizidine (12,15) and indolizidine (18,21) systems. A Mg for Li transmetallation, crucial for the synthesis of 13 and of potential broader significance in directed metalation chemistry, is reported." @default.
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• W1520702924 date "1983-01-01" @default.
• W1520702924 modified "2023-10-02" @default.
• W1520702924 title "Directed ortho metallation of tertiary aromatic amides" @default.
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• W1520702924 doi "https://doi.org/10.1016/s0040-4020(01)91913-1" @default.
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