Potassium Carbonate → HCID 72695484, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 2-iodo-1-methyl-4-(1-methylpiperidin-4-yloxy)-9,10-dihydro-4H-3,10a-diaza-benzo[f]azulene (example 133) (100 mg, 0.23 mmole) in toluene (2 mL) and ethanol (1 mL) in a screw-capped vial are added 3-fluorobenzeneboronic acid (64 mg, 0.46 mmole), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium (10 mg) and an 1M aqueous solution of potassium carbonate (0.8 mL). The vial is evacuated and filled with argon. The reaction mixture is stirred at 95° C. for 20 hours. Water is added to the reaction mixture, and the pH is adjusted to 9-10 with 1N aqueous sodium hydroxide. The aqueous phase is extracted three times with ethyl acetate. The pooled organic extracts are dried over magnesium sulphate, filtered and the solvent is removed under reduced pressure. The residue is purified by silica gel chromatography using (CH2Cl2:MeOH:NH4OH) as eluent with a gradient from (95:5:0.1) to (92:8:0.5) to give 2-(3-fluorophenyl)-1-methyl-4-(1-methylpiperidin-4-yloxy)-9,10-dihydro-4H-3,10a-diaza-benzo[f]azulene melting at 132° C.

Provenance & Evidence