Synthesis of metal-containing carbohydrate polymers employing crown ether phase transfer catalyzed interfacial condensation
作者： Y Naoshima , C E Carraher , S Iwamoto , H Shudot
关键词: Sodium hydroxide 、 Catalysis 、 Metal 、 Polymer 、 Phase-transfer catalyst 、 Organic chemistry 、 Triethylamine 、 Condensation reaction 、 Chemistry 、 Crown ether
摘要: Phase transfer catalyzed interfacial reaction of the polysaccharide dextran (C6H10O5)n with organotitanium and organotin dichlorides to form metal-containing carbohydrate polymers has been carried out in presence two bases, sodium hydroxide triethylamine. Interfacial systems employing a crown ether phase catalyst (PTC) gave generally greater yields compared analogous without PTC. The trend maximum yield for triethylamine dichloride not containing PTC was different from that observed PTC, probably because ability act as
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