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A kind of synthesis method of cobalt-manganese-based composite oxide catalyzed oxidation of alcohol into aldehyde or ketone

A composite oxide and synthesis method technology, applied in the field of aldehyde or ketone catalytic synthesis, can solve the problems of high reaction temperature, expensive reaction equipment, long reaction time, etc., and achieve the effects of mild reaction conditions, excellent yield and high compatibility

Active Publication Date: 2021-03-16
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In addition to cobalt-manganese-based catalysts, the invention patent CN104817441B proposes a method of using gold as a catalyst to catalyze the oxidation of alcohols into aldehydes or ketones, which relies on expensive reaction equipment
[0010] In summary, in the method for oxidation of known cobalt-manganese-based alcohols into aldehydes or ketones, or need high reaction temperature, or need long reaction time, or need specific oxidizing agent, or need shortcoming such as expensive reaction equipment

Method used

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  • A kind of synthesis method of cobalt-manganese-based composite oxide catalyzed oxidation of alcohol into aldehyde or ketone
  • A kind of synthesis method of cobalt-manganese-based composite oxide catalyzed oxidation of alcohol into aldehyde or ketone
  • A kind of synthesis method of cobalt-manganese-based composite oxide catalyzed oxidation of alcohol into aldehyde or ketone

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: add p-methylbenzyl alcohol (1mmol) and toluene (2mL) in the reaction tube of 10mL, add catalyst Co x mn y o 4 (x / y=1), the reaction mixture was reacted at 60° C. for 6 h. After the reaction was completed, the target product I was separated by column chromatography with a yield of 56.3%.

[0029]

[0030] The proton NMR data of product I are: δ9.88(s, 1H), 7.70(d, J=8.1Hz, 2H), 7.25(d, J=7.9Hz, 2H), 2.36(s, 3H).

Embodiment 2

[0031] Embodiment 2: according to the step of embodiment 1, the difference is that the catalyst is Co x mn y o 4 (x / y=10), the reaction time is 10h, and the yield of product I is 99.9%.

Embodiment 3

[0032] Embodiment 3: according to the step of embodiment 1, the difference is that the catalyst is Co x mn y o 4 (x / y=30), the reaction time is 12h, and the yield of product I is 89.7%.

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Abstract

The invention discloses a synthesizing method for oxidizing cobalt and manganese-based composite oxide catalyzed alcohol into aldehyde or ketone and belongs to the technical field of aldehyde or ketone synthesis. According to the method, under the action of a cobalt and manganese-based catalyst, air or oxygen is utilized as an oxidant; under the heating condition, alcohol is oxidized into corresponding aldehyde or ketone under a liquid phase. The synthesizing method disclosed by the invention has the advantage of moderate reaction conditions, reaction can be performed under the air condition,and the reaction can achieve a high-efficiency catalyzing effect of alcohol oxidization without a catalysis promoting effect of alkali, a special oxidant and / or other any organic / inorganic additive.

Description

Technical field: [0001] The invention belongs to the technical field of catalytic synthesis of aldehydes or ketones, and relates to a method of directly oxidizing alcohols into corresponding aldehydes or ketones by air under the action of a cobalt-manganese-based composite catalyst, which contains differently substituted primary or secondary alcohols under heating. resolve resolution. Background technique: [0002] The oxidation reaction of alcohol is a very important reaction in organic chemistry. It plays an important role in the process of fine chemicals, pharmaceutical synthesis and total synthesis of natural products, and is also a key step in the preparation of important industrial raw materials such as pyridine. The research on the oxidation of alcohols to aldehydes or ketones is a hot research direction in the research of oxidation reactions. Compared with the homogeneous catalytic system, the biggest advantage of the heterogeneous catalytic system is the easy separ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07B41/06C07C45/38C07C45/29C07C47/542C07C47/575C07C47/24C07C45/39C07C49/786C07D333/22
CPCC07B41/06C07C45/298C07C45/38C07C45/39C07D333/22C07C47/542C07C47/575C07C47/24C07C49/786
Inventor 柯清平李丹丹崔平谢瑞伦刘祥春赵志刚凌强
Owner ANHUI UNIVERSITY OF TECHNOLOGY