硫代乙酸是一种有机化合物,化学式为CH3C(O)SH,它是黄色液体,有强烈的硫醇气味。它用于有机合成中巯基的引入。[1]
硫代乙酸 | |
---|---|
IUPAC名 Ethanethioic S-acid | |
别名 | Thioacetic S-acid Thiolacetic acid |
识别 | |
CAS号 | 507-09-5 |
PubChem | 10484 |
ChemSpider | 10052 |
SMILES |
|
InChI |
|
InChIKey | DUYAAUVXQSMXQP-UHFFFAOYAO |
ChEBI | 46800 |
KEGG | C01857 |
性质 | |
化学式 | C2H4OS |
摩尔质量 | 76.11756 g·mol⁻¹ |
密度 | 1.08 g/mL |
熔点 | -17 °C(256 K) |
沸点 | 97 °C(370 K) |
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。 |
制备
- (CH3C(O))2O + H2S → CH3C(O)SH + CH3CO2H
化学性质
硫代乙酸离解出的硫代乙酸根可以用于制备硫代乙酸酯。[3] 硫代乙酸酯的水解会产生硫代乙酸。由硫代乙酸钠和卤代烃的反应,可以制备硫代乙酸酯。一些反应如下:
- CH3C(O)SH + NaOH → CH3C(O)SNa + H2O
- CH3C(O)SNa + RX → CH3C(O)SR + NaX (X = Cl, Br, I, etc)
- CH3C(O)SR + 2 NaOH → CH3CO2Na + RSNa + H2O
- RSNa + HCl → RSH + NaCl
参考文献
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