Potassium Carbonate → Phenol, 2,6-bis(1,1-dimethylethyl)-4-[[(dimethylphenylsilyl)methyl]thio]-

反応式

[C:1]([C:5]1[CH:10]=[C:9]([SH:11])[CH:8]=[C:7]([C:12]([CH3:15])([CH3:14])[CH3:13])[C:6]=1[OH:16])([CH3:4])([CH3:3])[CH3:2].C(=O)([O-])[O-].[K+].[K+].Cl[CH2:24][Si:25]([CH3:33])([CH3:32])[C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1>CN(C)C=O>[C:12]([C:7]1[CH:8]=[C:9]([S:11][CH2:24][Si:25]([CH3:33])([CH3:32])[C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=2)[CH:10]=[C:5]([C:1]([CH3:4])([CH3:3])[CH3:2])[C:6]=1[OH:16])([CH3:15])([CH3:14])[CH3:13]

参加物

実験手順

Mix 2,6-di-t-butyl-4-mercaptophenol (2.4 g, 10mmol), potassium carbonate (1.4 g, 10 mmol), chloromethyldimethylphenylsilane (1.9 g, 10 mmol) and dimethylformamide (50 mL) and stir overnight at room temperature under argon atmosphere. Dilute the mixture with ice-water and extract with ethyl ether. Wash the ethereal layer with water, then brine, filter through flourosil-Na2SO4, and evaporate to an orange oil (3.5 g). Purify the product by first distilling (bp 160°-170° C. @0.1 mm Hg), then subjecting to silica gel chromatography (CCl4 :CHCl3 /1:1) to obtain the title compound as a light yellow oil which slowly crystallizes to a whim waxy solid (2.3 g, 59%).