O-Xylene → 2-(2-Fluorophenyl)thiazolo[5,4-b]pyridine

Participants

Reaction Steps

3-(2-Fluorobenzoylamino)-2-pyridone (2 g.), 60 ml. of xylene and 15 ml. of pyridine were heated until solution was complete. To this solution was added 6.5 grams of phosphorus pentasulfide and the mixture was heated at reflux for 16 hours. The reaction mixture was decanted from a gummy residue while hot, and the solvents were concentrated to dryness. The crystalline residue was recrystallized from ethanol to give 2-(2-fluorophenyl)thiazolo[5,4-b]pyridine, m.p. 119-121° C.

Provenance & Evidence