Triethylamine → HCID 21094055, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 2-(4-methoxymethylsulfanylphenyl)-3-(tetrahydropyran-4-yl)-N-thiazol-2-ylpropionamide (EXAMPLE 77, 1.29 g, 3.28 mmol) in THF (50 mL) was added to a stirred solution of AgNO3 (0.59 g, 3.28 mmol) in EtOH (85 mL) at 40° C. The mixture was protected from light and stirred at 40° C. for 21 h. The solvents were evaporated off under reduced pressure, then the remaining solid was triturated with i-PrOH (60 mL), THF (60 mL), and Et2O (60 mL). After air-drying, the solid was stirred vigorously with CH2Cl2 (200 mL) and 6M HCl (82 mL) for 4 h under Ar. The layers were separated, then the aqueous phase was extracted with CH2Cl2 (2×100 mL). The combined organic extracts were filtered through Celite, washed with brine (100 mL) and dried (MgSO4). Filtration and solvent evaporation furnished 2-(4-mercaptophenyl)-3-(tetrahydropyran-4-yl)-N-thiazol-2-ylpropionamide: m/z (ES+)=349.2 [M+H]+. NEt3 (0.14 mL, 1006 μmol) and a solution of 4-iodomethyltetrahydropyran (151 mg, 668 μmol) in anhydrous DMF (3 mL) were added to a stirred solution of this benzenethiol (197 mg, 565 μmol) in anhydrous DMF (7 mL) at 0° C. The mixture was warmed to 20° C., before being stirred for 16 h. The solvents were evaporated off under reduced pressure, then the residue was partitioned between CH2Cl2 (25 mL) and 2% aqueous citric acid (10 mL). The aqueous layer was extracted with CH2Cl2 (10 mL), then the combined organic layers were washed with H2O (10 mL), saturated aqueous Na2CO3 (10 mL), H2O (10 mL), and brine (10 mL). After drying (MgSO4), filtration and solvent evaporation gave a residue that was subjected to flash chromatography (IH-EtOAc, 3:1 to 0:1) to furnish the title compound: RTA=3.61 min; m/z (ES+)=447.3 [M+H]+.

Provenance & Evidence