2-Butanamine, 3,3-dimethyl- → 2-(4-Chlorophenylsulfonyl)-3-(pyridin-3-ylamino)-3-(1,2,2-trimethylpropylamino)-2-propenenitrile

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Reaktionsschritte

2-(4-Chloro-phenylsulfonyl)-3-methylsulfanyl-3-(pyridin-3-ylamino)-2-propenenitrile (0.186 g, 0.5 mmol) was stirred in 1,2,2-trimethylpropylamine (1 ml) for 22 h at 100° C. under nitrogen. The reaction mixture was concentrated. The residue was dissolved in DCM, washed with water, dried (sodium sulfate) and concentrated. The crude product was purified by flash chromatography using ethyl acetate as eluent to give 124 mg (58%) of the title compound as a syrup, which could be crystallised from ethyl acetate/heptane 2:1 to give 65 mg (30%). Mp 172-174° C. 1H NMR (300 MHz, CDCl3): δ=0.85 (s, 9H), 0.9 (d, 3H), 3.03 (m, 1H), 7.35 (m, 2H), 7.48 (d, 2H), 7.80 (d, 2H), 8.33 (br s, 1H), 8.5 (br s, 1H).

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