半岛bd体育手机客户端 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

半岛bd体育手机客户端 性质

质量水平	200
测定	98%
折射率	n 20/D 1.561 (lit.)
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)