Sn(IV) complexes, i.e., di-n-butyltin dichloride (Bu₂SnCl₂), n-butyltin trichloride (BuSnCl₃), di-n-butyltin dilaurate (Bu₂SnLau₂), n-butyl stannoic acid [BuSnO(OH)], and di-n-butyl-oxo-stannane (Bu₂SnO), were tested as catalysts for the glycerolysis of triacylglycerides (TAGs) to produce monoacylglycerols (MAGs) and diacylglycerols (DAGs). Parameters such as the reaction time, temperature, catalyst amount and stirring velocity were evaluated. All complexes were active in converting TAGs to MAGs and DAGs. The reactivity order at 220 °C at a molar ratio of 1/6/0.01 (TAGs/GLY/CAT) was established as: Bu₂SnO > Bu₂SnLau₂ ∼ BuSnO(OH) > Bu₂SnCl₂ > BuSnCl₃. The results were discussed considering the different catalyst compatibilities with the reaction medium and the different mechanisms accepted for (trans)esterification catalysed by organotin(IV) compounds.

中文翻译：

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在甘油三酸酯的甘油分解中具有高催化活性和选择性的有机锡（IV）化合物

锡（IV）配合物，即，二- Ñ -butyltin二氯化物（卜₂的SnCl ₂），Ñ -butyltin三氯化（BuSnCl ₃），二- ñ -butyltin月桂酸盐（卜₂ SnLau ₂），Ñ丁基锡酸[BUSNO （OH）]和二正丁基-氧代锡烷（Bu ₂SnO 2被测试为甘油三酸酯（TAG）的甘油分解以产生单酰基甘油（MAG）和二酰基甘油（DAG）的催化剂。评价反应时间，温度，催化剂量和搅拌速度等参数。所有复合物都具有将TAG转化为MAG和DAG的活性。在220℃下的反应顺序以1/6 / 0.01（标签/ GLY / CAT）的摩尔比被确定为：卜₂的SnO>卜₂ SnLau ₂〜BUSNO（OH）>卜₂的SnCl ₂ > BuSnCl ₃。考虑到与反应介质的不同催化剂相容性以及有机锡（IV）化合物催化的（酯基）酯化反应接受的不同机理，讨论了结果。