Mark Hadden and Paul J. Stevenson
J. Chem. Res. (S), 1998, 796-797
DOI:
10.1039/A804962I,
Paper
Methyl 4-acetyl-5-(2-nitrophenyl)pyrrolidine-2-carboxylate 5, readily available in one step by a 1,3-dipolar cycloaddition, undergoes reduction, cyclisation and fragmentation to the corresponding quinoline when treated with hydrogen and palladium.