Pyrotartaric acid synthesis

12synthesis methods

Product Name:Pyrotartaric acid
CAS Number:636-60-2
Molecular formula:C5H8O4
Molecular Weight:132.1146

77-92-9 Synthesis

77-92-9
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$5.00/10g

636-60-2
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64-19-7 Synthesis

64-19-7
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$10.00/25ML

127-17-3 Synthesis

127-17-3
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$5.00/10g

67-64-1
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$19.10/10ml

Yield:636-60-2 84 %Spectr.

Reaction Conditions:

with hydrogen in water at 225; under 6000.6 Torr; for 0.666667 h;Pressure;

Steps:

27 EXAMPLES 26-28

General procedure: 42 mg of citric acid monohydrate was dissolved in 2 mL of water, 0.5 mol% of Pd (catalyst in powder form) was added and the reactor was flushed 6 times with N₂. Then the reactor was loaded with H₂ and heated to 225°C for a period of 40 min. The conversion of citric acid was >99% in all cases. Example 27 shows that a proper combination of H₂ pressure, time and temperature also allows to reach high yields with a minimal amount of the commercial Pd/C catalyst.

References:

WO2018/65475,2018,A1 Location in patent:Page/Page column 15