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Method for directly synthesizing cyclic carbonate from olefin under catalysis of metalloporphyrin

A technology of porphyrin catalyzing olefins and cyclic carbonates, applied in chemical instruments and methods, catalytic reactions, catalysts for physical/chemical processes, etc., can solve problems such as low yields, etc. The effect of process integration

Pending Publication Date: 2021-03-12
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, and provides a method for directly synthesizing cyclocarbonate from olefins catalyzed by metalloporphyrins, so as to solve the technical problems of low yield in the prior art

Method used

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  • Method for directly synthesizing cyclic carbonate from olefin under catalysis of metalloporphyrin
  • Method for directly synthesizing cyclic carbonate from olefin under catalysis of metalloporphyrin
  • Method for directly synthesizing cyclic carbonate from olefin under catalysis of metalloporphyrin

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Experimental program
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Effect test

Embodiment 1

[0032] Styrene (1.2g, 10mmol), manganese tetraphenylporphyrin (1.0mg, 0.14%mmol), cocatalyst [4-Pr-PyH]Bra (40mg, 0.25%mol), 0.1MPa oxygen and 1.2MPa carbon dioxide , reacted at 80°C for 8h, stopped the reaction to obtain the corresponding cyclocarbonate, and its yield was 89% by gas phase detection.

Embodiment 2

[0034] Styrene (1.2g, 10mmol), manganese tetraphenylporphyrin (1.0mg, 0.14%mmol), cocatalyst [4-NH 2 -PyH]Br b (44 mg, 0.25% mol), the reactor was closed, and 0.8 MPa oxygen and 1.2 MPa carbon dioxide were introduced. React at 100° C. for 8 h, stop the reaction to obtain the corresponding cyclic carbonate, and its yield is 95% by gas phase detection.

Embodiment 3

[0036] In a 100mL autoclave, add styrene (1.2g, 10mmol), manganese tetraphenylporphyrin (1.0mg, 0.14%mmol), cocatalyst [4-OH-PyH]Br c (44mg, 0.25%mol ), close the reactor, and feed 0.6MPa oxygen and 1.2MPa carbon dioxide. After reacting at 130°C for 8 hours, the reaction was stopped to obtain the corresponding cyclocarbonate, and the yield was 90% by gas phase detection.

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Abstract

The invention discloses a method for directly synthesizing cyclic carbonate from olefin under catalysis of metalloporphyrin, and relates to the technical field of catalytic synthesis. The technical scheme is characterized in that the method comprises the following steps: catalyzing olefin, carbon dioxide and an oxidant to carry out epoxidation carboxylation reaction by taking metalloporphyrin as acatalyst and ionic liquid as a cocatalyst, and preparing cyclic carbonate by a one-pot method. The specific reaction equation is as follows: the reaction conditions are mild, the catalyst preparationis simple and convenient, the catalyst consumption is low, and the target product cyclic carbonate is obtained with high conversion rate and high selectivity.

Description

technical field [0001] The invention relates to the technical field of catalyst synthesis, in particular to a synthesis method of cyclocarbonate. Background technique [0002] Currently, there are few reports on the direct preparation of cyclic carbonates from alkenes and carbon dioxide. In the prior art, organo-rhodium complexes are used to catalyze the epoxidation reaction of olefins in oxygen, and then the epoxidized product further generates cyclocarbonate with carbon dioxide cycloaddition, and the cyclocarbonate yield in this system is 20~30% (J . Mol. Catal., 1987, 41, 355-399). Subsequently, the research group used a series of metal oxides as catalysts, and the results showed that niobium pentoxide had a good catalytic effect, and the corresponding cyclocarbonate was obtained with a yield of 16.6% (Organomel.Chem., 2000,14,779-802 ). In addition, other metal salts and metal-organic framework materials have also been developed to catalyze the reaction of olefins and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D317/36B01J31/22B01J31/02
CPCB01J31/0282B01J31/0284B01J31/183B01J2231/328B01J2531/025B01J2531/72C07D317/36
Inventor 张治国产圣易敏郑学根陈静雯杨森鲍宗必
Owner CHINA PETROLEUM & CHEM CORP
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