![](/CAS/GIF/29943-42-8.gif)
Tetrahydro-4H-pyran-4-one synthesis
- Product Name:Tetrahydro-4H-pyran-4-one
- CAS Number:29943-42-8
- Molecular formula:C5H8O2
- Molecular Weight:100.12
![Carbon dioxide](/CAS/GIF/124-38-9.gif)
124-38-9
122 suppliers
$175.00/23402
![2,2'-Dichlorodiethyl ether](/CAS/GIF/111-44-4.gif)
111-44-4
318 suppliers
$13.00/50g
![Tetrahydro-4H-pyran-4-one](/CAS/GIF/29943-42-8.gif)
29943-42-8
421 suppliers
$5.00/1g
Yield:29943-42-8 95.9%
Reaction Conditions:
with cesium iodide in ethanol;water at 90; under 8250.83 Torr;Temperature;Pressure;
Steps:
1.2; 2.2; 3.2; 4.2; 5.2
(2) dissolving bis(2-chloroethyl)ether in ethanol, Adding Zr-Ce-Ti-Al composite oxide and cesium iodide, heating to 90 °C, Add H2O and introduce CO2 under stirring. The control pressure is 1.1 MPa, after the reaction is completed, Drop to room temperature, filter, and distill off ethanol and H2O under reduced pressure.After recrystallization, tetrahydropyran-4-one is obtained. Step (2) The molar ratio of bis(2-chloroethyl)ether to ethanol is 1.5 mol/L; the mass ratio of bis(2-chloroethyl)ether to Zr-Ce-Ti-Al composite oxide 5:2, the mass ratio of Zr-Ce-Ti-Al composite oxide to cesium iodide is 9:2; the flow rate of CO2 is 35L/min; recrystallization is carried out by ethyl acetate/petroleum ether system Recrystallization. The tetrahydropyran-4-one obtained had a purity of 99.7% and a product yield of 95.9%.
References:
Suzhou Gaide Careful Materials Co., Ltd.;Li Xiaoming CN108912081, 2018, A Location in patent:Page/Page column 4-6
![4H-PYRAN-4-ONE](/CAS/GIF/108-97-4.gif)
108-97-4
74 suppliers
$61.00/250mg
![Tetrahydro-4H-pyran-4-one](/CAS/GIF/29943-42-8.gif)
29943-42-8
421 suppliers
$5.00/1g
![2H-Pyran-4(3H)-one](/CAS/20180629/GIF/84302-42-1.gif)
84302-42-1
16 suppliers
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![Tetrahydro-4H-pyran-4-one](/CAS/GIF/29943-42-8.gif)
29943-42-8
421 suppliers
$5.00/1g
![Tetrahydro-4-pyranol](/CAS/GIF/2081-44-9.gif)
2081-44-9
285 suppliers
$6.00/1g
![Tetrahydro-4H-pyran-4-one](/CAS/GIF/29943-42-8.gif)
29943-42-8
421 suppliers
$5.00/1g
![1 5-DICHLORO-3-PENTANONE](/CAS/GIF/3592-25-4.gif)
3592-25-4
120 suppliers
$20.00/100mg
![Tetrahydro-4H-pyran-4-one](/CAS/GIF/29943-42-8.gif)
29943-42-8
421 suppliers
$5.00/1g