Carbon Dioxide → Carbon Dioxide

HRID 2168859Notes

Reaction equation

HRID 2168859 reaction equation
[CH3:1][CH:2]1[CH2:6][CH2:5][CH2:4][O:3]1.[C:7](=[O:9])=[O:8]>[Zn].[Mg]>[C:7](=[O:3])([OH:9])[OH:8].[CH2:4]([OH:3])[CH2:5][CH2:6][CH:2]([OH:8])[CH3:1].[CH3:1][CH:2]1[CH2:6][CH2:5][CH2:4][O:3]1.[C:4](=[O:3])=[O:8]

Participants

6

Reactant 2

HCID 280Carbon Dioxide2×HCID 73012-Methyltetrahydrofuran2×

Product 3

HCID 280Carbon DioxideHCID 73012-MethyltetrahydrofuranHCID 867022981,4-Pentanediol carbonate

Reagents, catalysts & solvents 1

HCID 11457656Magnesium--zinc (1/1)Catalyst

Procedure

Adding 2-methyl tetrahydrofuran prepared by the embodiment 3 and the magnesium-zinc-rare earth oxide composite catalyst into a reactor at the weight ratio of 100:1; opening a heating device to keep temperature of the rector constant at 80° C.; filling excessive CO2 into the reactor, and controlling the absolute pressure in the reactor under 6.0 MPa; performing a cycloaddition reaction between 2-methyl tetrahydrofuran and CO2 in the reactor for 20 minutes to obtain the reaction product, distilling the reaction product to obtain 1,4-pentanediol carbonate, wherein the mole ratio of 2-methyl tetrahydrofuran to CO2 is 1:15, conversion rate of 2-methyl tetrahydrofuran in the cycloaddition reaction is 86%, and yield of 1,4-pentanediol carbonate is 54%.

Workup

  1. customprepared by the embodiment 3
  2. customconstant at 80° C.
  3. customto obtain the reaction product
  4. distillationdistilling the reaction product

Sources & evidence

ORD record
ord-c9bab6c16bbd4dff9afe7326e08ad81d
Source dataset
uspto-grants-2015_06
Patent number
US09045707B2

Reaction notes

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