利用固体酸催化剂从生物质功能分子制备 4,4-双(5-甲基噻吩-2-基)戊酸

IF 3.4 3区化学 Q2 CHEMISTRY, PHYSICAL

Catalysis Communications Pub Date : 2024-02-01 DOI:10.1016/j.catcom.2024.106906

Sreedhar Gundekari , Rajathsing Kalusulingam , Mohan Varkolu , Kannan Srinivasan

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引用次数: 0

摘要

利用固体酸催化剂（Amberlyst-15 和 Indion-190），首次成功地从乙酰丙酸（LA）及其酯与 2-甲基噻吩（2-Met）合成了 4,4-双（5-甲基噻吩-2-基）戊酸（双噻吩甲酯，BTA-M）及其烷基酯（BTAE-M）。值得注意的是，Indion-190 是一种具有成本效益的催化剂，在优化的无溶剂反应条件下，它可以生成 BTA-M 和双噻吩甲酯-甲基 (BTME-M)，其选择性为 96-98%，LA 和乙酰丙酸甲酯的转化率为 99%。Indion-190 的可回收性得到了展示，在制备 BTA-M 和 BTME-M 的过程中，它在三个反应循环中保持了良好的可回收性，但反应物的转化率略有下降。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Preparation of 4,4-bis(5-methylthiophen-2-yl)pentanoic acid from biomass-based functional molecules using solid acid catalysts

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Preparation of 4,4-bis(5-methylthiophen-2-yl)pentanoic acid from biomass-based functional molecules using solid acid catalysts

For the first time, the successful synthesis of 4,4-bis(5-methylthiophen-2-yl)pentanoic acid (bisthiophenic acid-methyl; BTA-M) and its alkyl esters (BTAE-M) from levulinic acid (LA) and its esters with 2-Methylthiophene (2-Met) has been achieved, utilizing solid acid catalysts (Amberlyst-15 and Indion-190). Notably, Indion-190, a cost-effective catalyst, demonstrated the formation of BTA-M and bisthiophenic methyl ester-methyl (BTME-M) with 96–98% selectivities and 99% conversion of LA and methyl levulinate under optimized, solvent-free reaction conditions. The recyclability of Indion-190 has been showcased, maintaining good recyclability for the preparation of BTA-M and BTME-M over three reaction cycles, with a slight decrease in the conversion of reactants.

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来源期刊

Catalysis Communications 化学-物理化学

CiteScore

6.20

自引率

2.70%

发文量

183

审稿时长

46 days

期刊介绍： Catalysis Communications aims to provide rapid publication of significant, novel, and timely research results homogeneous, heterogeneous, and enzymatic catalysis.