Hydrogen Bromide → 3-Methyl-4-[(2-aminoethyl)thiomethyl]isothiazole hydrobromide
반응식
O[CH2:2][C:3]1[C:4]([CH3:8])=[N:5][S:6][CH:7]=1.Cl.[NH2:10][CH2:11][CH2:12][SH:13].[BrH:14]>>[BrH:14].[CH3:8][C:4]1[C:3]([CH2:2][S:13][CH2:12][CH2:11][NH2:10])=[CH:7][S:6][N:5]=1참가 물질
실험 절차
Reacting 4-hydroxymethyl-3-methylisothiazole (3.0 g.) with cysteamine hydrochloride (2.8 g.) in 48% aqueous hydrobromic acid (50 ml.) by the procedure of Example 1 gives 3-methyl-4-[(2-aminoethyl)thiomethyl]-isothiazole hydrobromide. The base is obtained by basifying with aqueous potassium carbonate, extracting with chloroform, drying the extracts over magnesium sulphate and concentrating. Reacting the amine (5.0 g.) with methyl isothiocyanate (1.94 g.) in ethanol (25 ml.) under reflux for 30 minutes and purifying the product on a column of alumina with benzene as eluant gives N-methyl-N'-[2-(3-methyl-4-isothiazolylmethylthio)ethyl]thiourea. (Found: C, 40.8; H, 5.9; N, 16.1; S, 36.4. C9H15N3S3 requires: C, 41.3; H, 5.8; N, 16.1; S, 36.8).
출처 및 근거
- ORD 기록
- ord-058beeef5c6542b2bcfda4f522165585
- 출처 데이터셋
- uspto-grants-1981_10
- 특허 번호
- US04293697
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