Dimethylamine → 1,1-Dimethyl-3-(3-methyl-but-2-enoyl)-thiourea

反応式

[CH3:1][C:2]([CH3:9])=[CH:3][C:4]([N:6]=[C:7]=[S:8])=[O:5].[CH3:10][NH:11][CH3:12].C1COCC1>>[CH3:10][N:11]([CH3:12])[C:7]([NH:6][C:4](=[O:5])[CH:3]=[C:2]([CH3:9])[CH3:1])=[S:8]

参加物

反応物 3

HCID 674Dimethylamine

HCID 8028Tetrahydrofuran

HCID 900170793-Methylbut-2-enoyl isothiocyanate

生成物 1

HCID 900165521,1-Dimethyl-3-(3-methyl-but-2-enoyl)-thiourea収率 84.9%

実験手順

Was prepared in the same manner as described in General Procedure Example 1b) using 3-methylbut-2-enoyl isothiocyanate (2 g, 14.2 mmol, Eq: 1.00) and dimethylamine solution 2M in THF (7.08 ml, 14.2 mmol, Eq: 1.00). Evaporation of the solvent afforded 1,1-dimethyl-3-(3-methyl-but-2-enoyl)-thiourea (2.239 g/84.9%) as a yellow oil which was used without further purification in the next step. MS: m/e=187.4 (M+H+)