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Synthesis of Amylose Acetates and Amylose Sulfates with High Structural Uniformity by Alexander Richter; Wolfgang Wagenknecht is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.
What is Synthesis of Amylose Acetates and Amylose Sulfates with High Structural Uniformity about?
Amylose triacetate (ATA) dissolved in DMSO was partially deacetylated by 1,6-hexamethylendiamine, 1,8-octamethylendiamine, 1,12-dodecylmethylendiamine and 1,2-cyclohexyldiamine (mixture of cis and trans isomers) at 80 degrees C. The reaction kinetics of the deacetylation were studied. Differences were found in the course of the reaction depending on the type of alkylene diamine (linear or cyclic). The isolated amylose acetates were dissolved in DMF and subsequently sulfated with sulfamic acid. In the course of the sulfation, the acetyl groups acted as protective groups and were completely cleaved after reaction. The amylose acetates and sulfates obtained were studied by 13C NMR spectroscopy and elemental analysis. It could be shown, that the deacetylation of ATA with the described alkylene diamines as well as the subsequent sulfation are highly regioselective. By proceeding this reaction scheme it is possible to synthesize 6-amyloseacetate, 2,6-di-amyloseacetate and 2-amylosesulfate with a high structural uniformity.
Who reads Synthesis of Amylose Acetates and Amylose Sulfates with High Structural Uniformity?
It is typically read by researchers, students, and practitioners in Biochemistry, Genetics and Molecular Biology.
- Author
- Alexander Richter; Wolfgang Wagenknecht
- Publisher
- Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0008-6215)
- Published
- 2003
- Language
- EN
- Field
- Biochemistry, Genetics and Molecular Biology (Life Sciences)