Diethyl acetylenedicarboxylate synthesis
- Product Name:Diethyl acetylenedicarboxylate
- CAS Number:762-21-0
- Molecular formula:C8H10O4
- Molecular Weight:170.16
64-17-5
142-45-0
762-21-0
1. In a 250 mL round-bottomed flask, ethanol (1.2 g, 26 mmol), butynedioic acid (1 g, 8.77 mmol), p-toluenesulfonic acid (30 mg, 0.17 mmol), and 1,2-dichloroethane (50 mL) were added sequentially, and refluxed with heat for 12 h. 2. After the reaction was completed, toluene (50 mL, with moisture trap) was added to the reaction system, and refluxed for 8 h. 3. reflux for 8 h. 3. The reaction solution was concentrated and purified by fast column chromatography (eluent: petroleum ether/ethyl acetate = 98/2) to give purified diethyl butynedioate (1.35 g, 91% yield).
![Ethanamine, N-[(3,5-dichlorophenyl)methylene]-2,2-diethoxy-](/CAS/20210305/GIF/1000210-73-0.gif)
1000210-73-0
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762-21-0
254 suppliers
$23.30/5g
1000210-73-0
0 suppliers
inquiry
762-21-0
254 suppliers
$23.30/5g
