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Preparation method of 4-(2-furyl)-3-butylene-2-ketone

A technology of furanyl and butene, applied in the direction of organic chemistry, etc., can solve problems such as economic waste, and achieve the effects of less three wastes, less side reactions, and simple operation

Inactive Publication Date: 2010-08-25
崔磊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most industries use sodium hydroxide solution to catalyze the reaction homogeneously, but a considerable amount of industrial waste water is produced, which must be neutralized before being discharged, resulting in unnecessary economic waste, and using sodium hydroxide solution as a catalyst, regardless of changing the amount of acetone or Concentration and dosage of sodium hydroxide, viscous residues exist after distillation, and solidify into blocks after cooling, in the form of polymer resin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 9.6kg of anion exchange resin catalyst and 58kg of acetone into the reaction kettle, and slowly add 96kg of furfural dropwise at 20°C. The raw materials were distilled off to obtain 108.8 g of solid, namely 4-(2-furyl)-3-buten-2-one, with a yield of 80%.

Embodiment 2

[0019] Add 28.8kg of anion exchange resin catalyst and 232kg of acetone into the reaction kettle, and slowly add 96kg of furfural dropwise at 20°C. The raw materials were distilled off to obtain 115.6 g of solid, namely 4-(2-furyl)-3-buten-2-one, with a yield of 85%.

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PUM

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Abstract

The invention discloses a preparation method of 4-(2-furyl)-3-butylene-2-ketone, which comprises the following steps of using anion exchange resin as a catalyst and acetone and furfural as raw materials; dripping a certain amount of furfural at the temperature below 20 DEG C to 40 DEG C; keeping the temperature for a certain time after dripping; filtering and removing the catalyst; and steaming unreacted raw materials to obtain a solid, namely 4-(2-furyl)-3-butylene-2-ketone. The invention has the advantages of high yield rate, less three wastes and simple operation.

Description

technical field [0001] The invention relates to a preparation method of 4-(2-furyl)-3-buten-2-one. Background technique [0002] Furfural is a cheap and easy-to-obtain agricultural and forestry by-product, which can be produced from waste such as oil husks, sawdust, and corncobs. China is rich in raw material resources for furfural production. Using furfural as raw material to synthesize furan spices and chemical products and to explore different synthetic routes and process conditions has practical significance for turning waste into treasure and comprehensively developing and utilizing biological resources. [0003] The molecular structure of furfural contains double bonds and aldehyde groups. It is chemically active and can undergo various chemical reactions. 4-(2-furyl)-3-buten-2-one (furfurylidene acetone) prepared by aldol condensation of furfural and acetone under alkaline conditions is a kind of strong herbal aroma and mild woody aroma. Fragrant spices. Furfurylid...

Claims

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Application Information

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IPC IPC(8): C07D307/46
Inventor 崔磊
Owner 崔磊
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