Hh. Johannes et al., ETHYNYLATED, VINYLATED, AND HETARYLATED INDODICARBOCYANINES BY PALLADIUM-CATALYZED CROSS-COUPLING REACTIONS, Tetrahedron letters, 36(40), 1995, pp. 7225-7228
Palladium-catalyzed cross-coupling reactions of chain halogenated indo
dicarbocyanines 2b,c with arylethynes, styrenes and hetarenes afford t
he ethynyl, vinyl, and hetaryl derivatives 4. The structure of 4b is c
onfirmed by X-ray structure determination.