Acetone → N-[4-(4-{2-[Methyl-(1-methyl-1H-pyrazole-4-sulfonyl)-amino]-ethyl}-3,4,5,6-tetrahydro-2H-[1,2']bipyrazinyl-3'-yl)-benzyl]-acetamide hydrochloride

関与物質

反応条件

反応手順

Dissolve 1-methyl-1H-pyrazole-4-sulfonic acid [2-(3′-chloro-2,3,5,6-tetrahydro-[1,2′]bipyrazinyl-4-yl)-ethyl]-methyl-amide (200 mg, 0.483 mmol) in DMA-H2O (10 ml; 3:1 v/v, previously degassed with nitrogen). Add 4-acetamidophenyl boronic acid (112 mg, 0.580 mmol), potassium carbonate (160 mg, 1.16 mmol) and tetrakis(triphenyl-phosphine)palladium (28 mg, 0.024 mmol). Heat the reaction mixture at 110° C. for 18 hr. Cool and dilute with ethyl acetate and water. Extract the aqueous layer with ethyl acetate and combine the organic layers. Wash the combined organic layers with brine and concentrate. Purify by chromatography, eluting with 1:2 hexanes:acetone to afford the free base of the title compound (124 mg, 50% yield) as a white foam.

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