产品说明
一般描述
2-Acetyl-5-methylthiophene is a volatile organic compound formed during the reaction between L-cysteine and dihydroxyacetone in glycerine or triglyceride solvent system. It can be prepared by reacting 2-methylthiophene with acetic anhydride. 2-Acetyl-5-methylthiophene undergoes palladium-catalyzed cross-coupling reaction with aryl bromides to form C-4 arylated product. It reacts with 1,2-bis(5-formyl-2-methylthiophen-3-yl)cyclopentene via Aldol condensation to form a chalcone with photochromic property. The standard molar enthalpies of combustion, formation and vaporization of 2-acetyl-5-methylthiophene are 4341.9 ± 1.8kJ/mol, 158.0 ± 2.1kJ/mol and 62.0 ± 2.6kJ/mol, respectively.
应用
2-Acetyl-5-methylthiophene may be used in the preparation of:
- 2-ethyl-5-methylthiophene
- (5-methylthiophen-2-yl)glyoxal
- (2E)-1-(5-methylthiophen-2-yl)-3-(pyridin-3-yl)prop-2-en-1-one
- ethyl 3-(5-methylthiophen-2-yl)-3-oxopropanoate
包装
25 g in glass bottle
基本信息
| 经验(实验)分子式 | C7H8OS |
| 分子量 | 140.20 |
| EC 号 | 237-181-2 |
| MDL编号 | MFCD00014529 |
| PubChem化学物质编号 | 24877976 |
| NACRES | NA.22 |
产品性质
| 质量水平 | 200 |
| 测定 | 98% |
| 折射率 | n |
| bp | 65-67 ℃/1 mmHg (lit.) |
| mp | 24-28 ℃ (lit.) |
| 密度 | 1.106 g/mL at 25 ℃ (lit.) |
| SMILES string | CC(=O)c1ccc(C)s1 |
| InChI | 1S/C7H8OS/c1-5-3-4-7(9-5)6(2)8/h3-4H,1-2H3 |
| InChI key | YOSDTJYMDAEEAZ-UHFFFAOYSA-N |
安全信息
| 储存分类代码 | 13 - Non Combustible Solids |
| WGK | WGK 3 |
| 闪点(F) | Not applicable |
| 闪点(C) | Not applicable |
| 个人防护装备 | Eyeshields, Gloves, type N95 (US) |
