Dimethylformamide → (6-Hydroxymethyl-pyridin-2-yl)-thiourea

Reaktionsgleichung

[NH2:1][C:2]1[N:7]=[C:6]([CH2:8][OH:9])[CH:5]=[CH:4][CH:3]=1.CN(C=O)C.C([N:23]=[C:24]=[S:25])(=O)C1C=CC=CC=1>C(Cl)Cl>[OH:9][CH2:8][C:6]1[N:7]=[C:2]([NH:1][C:24]([NH2:23])=[S:25])[CH:3]=[CH:4][CH:5]=1

Komponenten

Versuchsvorschrift

(6-Amino-pyridin-2-yl)-methanol (6-2, 1.00 g, 8.06 mmol) was dissolved in 20 mL anhydrous CH2Cl2 and 5 mL anhydrous DMF under N2. Benzoylisothiocyanate (1.19 mL, 8.86 mmol) was added and the reaction was stirred at room temperature fro 16 h. The reaction was concentrated in vacuo and to the resulting residue was added 24 mL 1M NaOH (aq) and 24 mL TEF. The resulting mixture was heated to reflux for 3 h. The THF was removed in vacuo and a white precipitate formed. The mixture was filtered and washed with water to provide the titled compound as a white solid. 1H NMR(DMSO-d6): δ10.58 (bs, 1H), 10.48 (bs, 1H), 8.84 (bs, 1H), 7.74 (t, 1H, J=8.1 Hz), 7.06 (d, 1H, J=7.5 Hz), 7.01 (d, 1H, J=8.1 Hz), 5.47 (t, 1H, J=5.9 Hz), 4.47 (d, 2H, J=5.7 Hz).