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Beilstein J. Org. Chem. 2012, 8, 2214–2222, doi:10.3762/bjoc.8.250
Graphical Abstract
Scheme 1: Strategy for the synthesis of (1,4-dihydro)pyridines by deprotonation/intramolecular carbolithiatio...
Scheme 2: Feasibility of the deprotonation/intramolecular carbolithiation.
Scheme 3: Synthesis of the starting N-allyl-ynamides.
Scheme 4: Intramolecular carbolithiation of N-allyl-ynamides to 1,4-dihydropyridines and pyridines.
Scheme 5: 2,3-Disubstituted pyridines by trapping of the intermediate metallated 1,4-dihydropyridine.
Scheme 6: Formal synthesis of the anti-dyskinesia agent, 5-HT1A receptor agonist, dopamine D2 receptor ligand...