1,8-Diazabicyclo(5.4.0)undec-7-ene → 1-Cyclopropyl-6-fluoro-7-(3-(1, 2, 3-triazol-1-yl) pyrrolidin-1-yl]-1,4-dihydro-4-oxo-quinoline-3-carboxylic acid

Participants

Reaction Conditions

Reaction Steps

A mixture of 1-cyclopropyl-6,7-difluoro-1,4-dihydro-4-oxo-quinoline-3-carboxylic acid (120 mg, 0.486 mmol), DBU (190 mg, 1.25 mmol), 3-(1,2,3-triazol-1-yl)pyrrolidine hydrochloride (216 mg, 1.25 mmol) in pyridine (8 ml) was heated at 80° C. for 18 h. The reaction mixture was concentrated and treated with water. The separated solid was collected by filtration, washed with water and acetonitrile to give light brown solid. Yield: 71 mg (38%), m.p. 284° C. (dec). 1H NMR (TFA) δ: 1.5 (m, 4H), 3.0 (m, 2H), 4.0 (m, 4H), 4.65 (bs, 1H), 5.9 (bs, 1H), 7.5 (d, 1H),8.20 (d, 1H), 8.6 (s, 1H), 8.7 (s, 1H), 9.2 (S, 1H).

Provenance & Evidence