Baeyer-Drewson Indigo Synthesis
A. Baeyer, V. Drewson, Ber. 15, 2856(1882)
K. Venkataraman, chemistry of Synthetic Dyes 2, 1008(New York,
1952)
M. Sainsbury, Rodd's Chemistry of Carbon Compounds IVB,
346,353(1977)
J. R. McKee et al., J. Chem. Ed. 68, A242(1991)
L. Fitjer et al., Tetrahedron 55, 14421(1999)
Also see Algar-Flynn-Olyamada(AFO)Reaction