MOSTI L.; SCHENONE P.; MENOZZI G., J. HETEROCYCL. CHEM., 1979, 16, NO 1, 117-182
作者:MOSTI L.、 SCHENONE P.、 MENOZZI G.
DOI:——
日期:——
A convenient preparation of 1,4-dihydro-1-methyl-4-oxo-2-quinolinecarboxaldehyde from<i>N</i>-methylisatoic anhydride
作者:Gary M. Coppola
DOI:10.1002/jhet.5570230623
日期:1986.11
The dianion of hydroxyacetone is readily generated with LDA in THF at -65°. This dianion reacts rapidly with N-methylisatoic anhydride (6) at -65° to furnish 2-hydroxymethyl-1-methylquinolin-4(1H)-one (12). The alcohol is oxidized to aldehyde 4 with manganese dioxide, and is subsequently converted to α,β-unsaturated ester 5 under Horner-Emmons conditions.