Sodium Chloride → 3-(Morpholin-4-yl)-5-(pentafluoro-lambda6-sulphanyl)benzoic acid

Participants

Reaction Conditions

Reaction Steps

1.5 g (4.6 mmol) of the compound of Example 15A and 0.48 g (5.5 mmol) of morpholine were dissolved in 15 ml of toluene, and the mixture was degassed with argon. 75 mg (0.09 mmol) of [2-(2-aminoethyl)phenyl](chloro)palladium-dicyclohexyl(2′,4′,6′-triisopropylbiphenyl-2-yl)phosphane/tert-butyl methyl ether adduct, 44 mg (0.09 mmol) of dicyclohexyl(2′,4′,6′-triisopropylbiphenyl-2-yl)phosphane and 1.06 g (11.0 mmol) of sodium tert-butoxide were added successively to this solution. The reaction was stirred in a microwave oven (Biotage Initiator, with Dynamic Field Tuning) at 130° C. for 30 min. The reaction was then stirred into 10 ml of saturated aqueous sodium chloride solution and extracted twice with in each case 30 ml of ethyl acetate. The organic phase was washed with pH 4 buffer solution, dried over sodium sulphate and concentrated on a rotary evaporator. The residue was dissolved in 5 ml of tert-butyl methyl ether, and 10 ml of pentane were added. The precipitate formed was filtered off and dried. This gave 1.04 g (68% of theory) of the title compound.

Provenance & Evidence