Sodium hydride → HCID 70937836, compound

Participants

Reaction Conditions

Reaction Steps

A solution of (RS)-benzyl 1,5,5-trimethyl-2-oxopyrrolidine-3-carboxylate (206 mg, 787 μmol) in 4 ml of dry DMF was purged with argon and cooled to 0° C. Then a 60% suspension of sodium hydride (31.5 mg, 0.79 mmol) was added and the mixture was stirred for 40 min at room temperature whereby a white suspension was formed. Then 2-chloro-5-(phenylethynyl)pyrimidine (CAS: [1051388-40-9]) (130 mg, 606 μmol) was added, the mixture was stirred for 30 min at 80° C., and then quenched by addition of 1 ml of saturated ammonium chloride solution. After extraction with ethyl acetate/water, drying over sodium sulfate and concentration; the residue (440 mg, yellow oil) was taken up in ethyl acetate, adsorbed onto 3 g of silicagel and loaded onto a 20 g prepacked flash chromatography column. After elution with a 10% to 60% ethyl acetate in heptane gradient, the fractions containing the desired product were collected to yield 212 mg (80%) of the title compound as a light yellow waxy solid, MS: m/e=440.3 (M+H+).

Provenance & Evidence