Jc. Henrion et al., CONDENSATION INDOLE 1,2-NAPHTHOQUINONE - SYNTHESIS OF NEW 4-(3-INDOLYL)1,2-NAPHTHOQUINONES, Bulletin des Societes chimiques belges, 105(7), 1996, pp. 415-418
The synthesis of new 4-(bindolyl)-1,2-naphthoquinones is achieved by c
ondensation of an indole with a 1,2-naphthoquinone. Optimal yields are
obtained by the complexation of 1,2-naphthoquinones with cerium chlor
ide in 1-butanol. A 1/1 mixture of NalO3/indole is then added to the c
omplex and the 4-(3-indolyl)-1,2-naphthoquinone is obtained in quantit
ative yield.