New acyclic Pd–diaminocarbene catalyst for Suzuki arylation of meso-chlorosubstituted tricarboindocyanine dyes

Acyclic Pd–diaminocarbene complex showed high catalytic activity in Suzuki arylation of meso-chlorine-substituted tricarboindocyanine dyes. Arylated dyes were obtained in 57–83% yields in the presence of 5 × 10−4 equiv of catalyst.