Method for preparing 3-arylbenzofuran ketone compounds

A compound, the technology of furanone, applied in the field of preparation of 3-arylbenzofuranone compound, can solve problems such as unreported

Active Publication Date: 2010-03-31
PETROCHINA CO LTD
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Problems solved by technology

[0007] Using phenolic compounds and phenylacetic acid structural compounds as raw materials, first carry out alkylation reaction, and then carry out esterification reaction to prepare the preparation method of 3-aryl benzofuranone compound. Th

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  • Method for preparing 3-arylbenzofuran ketone compounds
  • Method for preparing 3-arylbenzofuran ketone compounds
  • Method for preparing 3-arylbenzofuran ketone compounds

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[0037] Preparation of cross-linking agent: hydroxyaluminum polyion [Al 13 o 4 (OH) 24 (H 2 O) 12 ] 7+ (denoted as Al 13 ) preparation: weigh AlCl 3 ·6H 2 O (0.12mol, 28.92g) was added to 600ml of water to make a 0.2mol / L aqueous solution, and 26% NH 3 ·H 2 O solution (0.258mol, 16.8692g), add 1300ml of water to make a 0.2mol / L aqueous solution, add 3 Add NH dropwise to the solution (0.2mol / L) 3 ·H 2 O solution (NH 3 / Al 3+ The molar ratio is 2.15), and then aged in a constant temperature water bath at 70°C for 24 hours to obtain a colorless transparent liquid.

[0038] Acidification, impregnation loading, crosslinking and activation:

[0039] Sodium-based montmorillonite (Na-Mont), first undergoes purification treatments such as grinding, dissolving, and desanding, and then weighs 200 g of purified montmorillonite and places it in 4000 ml of H2O with a mass concentration of 5-50%. 2 SO 4 , HCl, H 3 PO 4 , HAc, HClO 4 In one or more of the solutions, stir and...

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Abstract

The invention relates to a method for preparing a 3-arylbenzofuran ketone compounds. The method comprises that: phenolic compounds and phenylacetic-acid structure compounds are subjected to alkylationin a mol ratio of 1:1-2 at a temperature between 60 and 270 DEG C; an alkylation catalyst is an acidized crosslinked montmorillonite catalyst prepared by acidizing, loading, crosslinking and activating montmorillonite; the weight ratio of phenolic compounds serving as reaction raw material to the montmorillonite alkylation catalyst is 1:0.01-0.2; an esterification catalyst is added; the mol ratioof the phenolic compounds serving as the reaction raw material to the esterification catalyst is 1:0.001-0.02; esterification is performed at a temperature between 60 and 170 DEG C; supported metal ions of the acidized crosslinked montmorillonite catalyst are 1 to 10 mmol/g of montmorillonite; and the mol ratio of silicon to aluminum is 2-10:1. The 3-arylbenzofuran ketone compound prepared is suitable for serving as organic polymer sensitive to oxidation and heat/light-induced degradation, particularly a polyolefin stabilizer.

Description

technical field [0001] The invention relates to a preparation method of 3-arylbenzofuranone compound. Background technique [0002] The antioxidant action of certain 3-arylbenzofuranones is known in the literature, especially by Morvan et al. in Bull. Soc. Chim. Fr. (1979, p. 583). [0003] The use of certain stabilizers as organic polymers is disclosed inter alia in US4325863, US5175312, CN94115314.2 and CN98103819.0. [0004] It is known in the literature that certain 5-hydroxybenzofurans have an antioxidant effect, among which Lukyanchuk et al. in Farm.Zh. (1990, No. 5, p. 64) describe it. [0005] It has now been found that a selected group of 3-arylbenzofuranone compounds are particularly useful as stabilizers for organic polymers, especially polyolefins, which are susceptible to oxidative, thermal or light-induced degradation, the The special structure can produce a large "steric hindrance effect", which makes the α-H atom highly active (the bond energy of the C-H bo...

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Application Information

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IPC IPC(8): C07D307/83B01J23/80
Inventor 西晓丽董平李建忠齐泮仑何玉莲李洪涛王熺包静严田炳全衣学飞柏晓红葛腾杰佟华芳邵伟赵光辉杨世成骆傲阳贾云刚郭立艳
Owner PETROCHINA CO LTD
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