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HQDA synthesis

4synthesis methods

Yield:-

Reaction Conditions:

at 200;Inert atmosphere;

Steps:

7

The solid tetra acid is flushed with nitrogen and heated to 200 °C under vacuum to obtain the dianhydride of the formula (13),

References:

WO2021/252169,2021,A1 Location in patent:Page/Page column 26

123-31-9 Synthesis

41663-84-7 Synthesis

89-20-3 Synthesis

123-31-9 Synthesis

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