Warwel S, Brüse F, Demes C, Kunz M, Rüsch gen Klaas M
Federal Centre for Cereal, Potato and Lipid Research, Institute for Biochemistry and Technology of Lipids, HP Kaufmann-Institute, Münster, Germany.
Chemosphere. 2001 Apr;43(1):39-48. doi: 10.1016/s0045-6535(00)00322-2.
A new strategy for the preparation of different polymers and special surfactants was developed. First, unsaturated fatty acid methyl esters obtained from plant oils were converted to terminally unsaturated esters and alpha-olefins by metathesis with ethylene using heterogeneous rhenium or homogeneous ruthenium catalysts. These esters were directly copolymerized with ethylene by an insertion-type palladium-catalyzed polymerization to functionalized polyolefins. Polyesters were synthesized by metathetical dimerization of omega-unsaturated esters and subsequent polycondensation of the produced internally unsaturated dicarboxylic esters or by acidic transesterification with petrochemical diols and additional acyclic diene metathesis polymerization. Omega-epoxy fatty acid methyl esters, achieved by a new method of chemo-enzymatic epoxidation, were converted into polyethers with comb-structure catalyzed by aluminoxanes on the one hand and into sugar surfactants by nucleophilic ring-opening with amino carbohydrates on the other hand.
开发了一种制备不同聚合物和特殊表面活性剂的新策略。首先，使用多相铼或均相钌催化剂，通过与乙烯复分解反应，将从植物油中获得的不饱和脂肪酸甲酯转化为末端不饱和酯和α-烯烃。这些酯通过插入型钯催化聚合与乙烯直接共聚，得到功能化聚烯烃。聚酯通过ω-不饱和酯的复分解二聚反应以及随后生成的内不饱和二羧酸酯的缩聚反应合成，或者通过与石化二醇进行酸性酯交换反应以及额外的开环易位聚合反应合成。通过一种新的化学酶促环氧化方法得到的ω-环氧脂肪酸甲酯，一方面在铝氧烷催化下转化为梳状结构的聚醚，另一方面通过与氨基碳水化合物进行亲核开环反应转化为糖表面活性剂。
