Abstract

Practical and efficient method has been developed for the preparation of novel sulfur-containing esters from triglycerides as potential important industrial and biomaterials. The fact that these unusual compounds are not found in natural sources encourages both academic and industrial communities for their preparation with suitable chemical or enzymatic processes. In general, enzymatic processes requiring more laborious synthesis and product isolation stages. On the other hand, known chemical methods for the preparation of normal wax esters have several drawbacks cited in the present work. Therefore, the chemical method developed in the present study is environmentally benign and suitable for both small- and large-scale syntheses of normal and unusual wax esters. For this purpose, triglycerides were taken to the transesterification reaction in a solvent-free medium with synthetic thia-long-chain alcohols at a ratio of (1:3). In order to catalyze the reaction, newly synthesized bis-imidazole-based metal-free acidic ionic liquid was used and the thia-mono esters were obtained in a fairly short period of time (6 h) with good to excellent yields. The catalyst reuse and large-scale synthesis studies were also carried out.

Graphic abstract

中文翻译：

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从甘油三酸酯直接生产作为生物和化学原料的硫蜡酯的简便方法

摘要

已经开发了一种实用有效的方法，用于从甘油三酸酯制备新型含硫酯，作为潜在的重要工业和生物材料。在自然资源中找不到这些不寻常的化合物这一事实鼓励学术界和工业界通过适当的化学或酶促方法进行制备。通常，酶促过程需要更费力的合成和产物分离阶段。另一方面，用于制备普通蜡酯的已知化学方法具有本工作中提到的几个缺点。因此，本研究开发的化学方法对环境无害，适合于小规模和大规模大规模合成普通和不常见的蜡酯。以此目的，硫杂长链醇的比例为（1：3）。为了催化该反应中，使用基于双咪唑新合成的不含金属的酸性离子液体和硫杂在时间（6小时）与良好至优异的产量相当短的期间，得到-单酯。还进行了催化剂再利用和大规模合成研究。

图形摘要