Pyridine → HCID 74017985, compound

Participants

Reaction Conditions

Reaction Steps

P-toluenesulfonyl chloride (210 mg, 1.10 mmol) is added to a solution of (E)-2-(6,7-dihydro-1-phenyl-1H-indazol-4(5H)-ylidene)ethanol (254 mg, 1.05 mmol) in 10 mL de pyridine cooled to a 0° C. The reaction is followed up by TLC. Next, the solvent is evaporated, the crude is diluted with CHCl3, and washed with a diluted solution of NaHCO3. The organic phase is evaporated at reduced pressure, to obtain 1-[2-(1-phenyl-1,5,6,7-tetrahydroindazol-4-ylidene)-ethyl]-pyridinium toluene-4-sulfonate (300 mg, 0.63 mmol, 60%, yellow solid).

Provenance & Evidence