Phenol → HCID 135407194, compound

Participants

Reaction Steps

A mixture of the pyridobenzimidazo derivative VII prepared as in Example 1 (3.5 g, 13.6 mM) and phenol (7.0 g, 74.5 mM) in xylenes (350 mL) was heated to reflux under argon for 6 h and left at room temperature for 16 h. The resulting solid precipitate was filtered and the filtrate was concentrated in vacuo. The resulting residue was purified by HPLC, using methylene chloride and THF as eluents followed by recrystallization of the desired fractions from methylene chloride and acetone to give the title compound as a solid: mp 176°-178° C.; MS: 307 (MH+).

Provenance & Evidence