ChemicalBook CAS DataBase List 1,2,3,6-Tetrahydrophthalic anhydride

1,2,3,6-Tetrahydrophthalic anhydride synthesis

5synthesis methods

Product Name:1,2,3,6-Tetrahydrophthalic anhydride
CAS Number:85-43-8
Molecular formula:C8H8O3
Molecular Weight:152.15

108-31-6 Synthesis

108-31-6
822 suppliers
$13.47/50g

106-99-0
239 suppliers
$80.00/100mL

85-43-8
196 suppliers
$145.00/10g

Yield:85-43-8 98.1%

Reaction Conditions:

at 80 - 110; for 4 h;Large scale;Temperature;

Steps:

1-4 example 2

Maleic anhydride (490 g, 5 mol) was placed in a bubbling reactor, heated to 80 ° C to melt maleic anhydride, and continuously passed from the bottom of the bubbling reactor1,3-butadiene gas,The reaction temperature was controlled to 110 ° C. After 4 hours of reaction, the gas phase was detected, the reaction of the starting material was completed, and the temperature was solidified to obtain 746.3 g of a white solid. The yield was 98.1%.

References:

CN108586398,2018,A Location in patent:Page/Page column 4-6

95-47-6 Synthesis