Methanol → L-cysteic acid methyl ester hydrochloride

反応式

[NH2:1][C@H:2]([C:8]([OH:10])=[O:9])[CH2:3][S:4](=[O:7])([OH:6])=[O:5].S(Cl)([Cl:13])=O.[CH3:15]O>>[ClH:13].[CH3:15][O:9][C:8](=[O:10])[C@H:2]([CH2:3][S:4](=[O:6])([OH:7])=[O:5])[NH2:1]

参加物

反応物 3

HCID 887Methanol

HCID 24386Thionyl Chloride

HCID 72886L-Cysteic acid

生成物 1

HCID 86673321L-cysteic acid methyl ester hydrochloride収率 75%

実験手順

L-cysteic acid (300 mg, 1.77 mmol) was dissolved in methanol (12 mL), and thionyl chloride (2.5 mL, 34 mmol) was slowly added at 0° C. After stirring at room temperature overnight, the reaction mixture was concentrated under reduced pressure, and the obtained residue was suspended in diisopropyl ether. The suspension was filtered to give the title compound as white crystals (291 mg, 1.33 mmol, 75%).