trans-1,4-Cyclohexanedicarboxybic acid synthesis
- Product Name:trans-1,4-Cyclohexanedicarboxybic acid
- CAS Number:619-82-9
- Molecular formula:C8H12O4
- Molecular Weight:172.18
100-21-0
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619-82-9
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$5.00/5g
Yield:619-82-9 92%
Reaction Conditions:
with 5%-palladium/activated carbon;hydrogen in water at 150; under 30003 Torr; for 5.5 h;
Steps:
1
100 parts by mass of terephthalic acid, 3.8 parts by mass of a catalyst (5% Pd / C manufactured by NE Chemcat Corporation) and 560 parts by mass of water were charged into a stainless steel reactor equipped with a stirrer, a thermometer and a gas- Thereafter, the mixture was heated to 150 DEG C under stirring at 400 rpm under atmospheric pressure.The supply of hydrogen was intermittently started so that the pressure became 4 MPa (gauge pressure) when the temperature reached 150 DEG C, and the reaction was carried out for 5.5 hours.After completion of the reaction, the reaction mixture was cooled to room temperature to obtain a reaction slurry. 3300 parts by mass of water was added to the slurry, and the product was dissolved by heating at 90 DEG C, followed by filtration to remove the catalyst.A part of the filtrate was collected and analyzed by gas chromatography. The conversion of terephthalic acid was 99% or more, the yield of 1,4-cyclohexanedicarboxylic acid was 92%, and the trans-ester ratio thereof was 36 mol%.
References:
KR101598769,2016,B1 Location in patent:Paragraph 0651 - 0655
10028-70-3
101 suppliers
$24.26/5g
619-82-9
217 suppliers
$5.00/5g
619-81-8
111 suppliers
$6.00/250mg
619-81-8
111 suppliers
$6.00/250mg
619-82-9
217 suppliers
$5.00/5g
