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Preparation of 4,4-bis(5-methylthiophen-2-yl)pentanoic acid from biomass-based functional molecules using solid acid catalysts
Catalysis Communications ( IF 3.4 ) Pub Date : 2024-03-15 , DOI: 10.1016/j.catcom.2024.106906 Sreedhar Gundekari , Rajathsing Kalusulingam , Mohan Varkolu , Kannan Srinivasan
Catalysis Communications ( IF 3.4 ) Pub Date : 2024-03-15 , DOI: 10.1016/j.catcom.2024.106906 Sreedhar Gundekari , Rajathsing Kalusulingam , Mohan Varkolu , Kannan Srinivasan
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.
中文翻译:
利用固体酸催化剂从生物质基功能分子制备 4,4-双(5-甲基噻吩-2-基)戊酸
首次成功合成了 4,4-双(5-甲基噻吩-2-基)戊酸(bisthiophenic acid-methyl;BTA-M) 及其乙酰丙酸 (LA) 及其酯与 2-甲基噻吩 (2-Met) 的酯 (BTAE-M) 已利用固体酸催化剂(Amberlyst-15 和 Indion-190)获得。值得注意的是,Indion-190 是一种经济高效的催化剂,在优化的无溶剂反应条件下,以 96-98% 的选择性和 99% 的转化率形成 LA 和乙酰丙酸甲酯甲酯 (BTME-M)。Indion-190 的可回收性已得到证明,在三个反应循环中保持良好的可回收性,用于制备 BTA-M 和 BTME-M,反应物的转化率略有降低。
更新日期:2024-03-15
中文翻译:
利用固体酸催化剂从生物质基功能分子制备 4,4-双(5-甲基噻吩-2-基)戊酸
首次成功合成了 4,4-双(5-甲基噻吩-2-基)戊酸(bisthiophenic acid-methyl;BTA-M) 及其乙酰丙酸 (LA) 及其酯与 2-甲基噻吩 (2-Met) 的酯 (BTAE-M) 已利用固体酸催化剂(Amberlyst-15 和 Indion-190)获得。值得注意的是,Indion-190 是一种经济高效的催化剂,在优化的无溶剂反应条件下,以 96-98% 的选择性和 99% 的转化率形成 LA 和乙酰丙酸甲酯甲酯 (BTME-M)。Indion-190 的可回收性已得到证明,在三个反应循环中保持良好的可回收性,用于制备 BTA-M 和 BTME-M,反应物的转化率略有降低。