Sökning: "esterification"

Visar resultat 1 - 5 av 67 avhandlingar innehållade ordet esterification.

1. 1. Biotransformations of Turpentine Constituents : Oxygenation and Esterification

   Författare :Marica Lindmark-Henriksson; KTH; []
   Nyckelord :Picea abies; Pinaceae; Essential oils composition; Terpene alcohol; Hemiacetal; Hemiacetal ester; TMP-turpentine; Monoterpene; alpha-pinene; beta-pinene; Limonene; Verbenol; Pinocarveol; Borneol; Myrtenol; Suspension cell culture; Biotransformation; ;

   Sammanfattning : This thesis describes methods to obtain value–addedcompounds from TMP-turpentine obtained from the spruce, Piceaabies. The methodology focuses on biotransformations using twoapproaches: an oxygenation approach (i.e. oxygenation ofterpene hydrocarbons by cell cultures) and an esterificationapproach (i. LÄS MER

3. 2. C1 Building Blocks: New Approaches for Thiomethylations and Esterification

   Författare :Marcus Söderström; Luke R. Odell; Anders Karlén; Vittorio Pace; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Borontrifluoride; Dimethylsulfide; Thiomethylation; Methylthioethers; Dithioacetalation; Methyl-Dithioacetals; Friedel-Crafts; Diarylmethanes; Defluorination; Methyl-Dithioesters; Thioamides; Diazomethane; Esterification; Medicinal Chemistry; Läkemedelskemi; Medicinal Chemistry; Läkemedelskemi;

   Sammanfattning : The thioether motif is found in numerous pharmaceuticals. The simplest form of this motif, the methyl-thioether is similarly found in many biologically active compounds and has exhibited many advantageous properties. The installation of the thiomethyl moiety can be troublesome due to the toxicity and malodor of small sulfur reagents. LÄS MER

4. 3. Hepatic lipase and dolichol esterification

   Författare :Pavel J Sindelar; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : Dolichol is one of the mevalonate pathway end products, present in all tissues and cellular membranes. The lipid is a primary alcohol consisting of 16-23 isoprenoid residues and occurs as a free alcohol, monophosphate or fatty acyl ester. LÄS MER

5. 4. Cellulose processing in ionic liquid based solvents

   Författare :Carina Olsson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; esterification; cellulose; NMR spectroscopy; solution spinning; dissolution; ionic liquids; cellulose derivatives; rheology; crystallinity;

   Sammanfattning : As the most abundant polymer in nature, cellulose has an undisputed role among the raw materials to be used in a sustainable future. From its native form, in wood or straw, cellulose can be processed into products such as paper and board. LÄS MER

7. 5. Microwave-assisted transformations of lignin for value-added material applications

   Författare :Jenevieve G. Yao; Minna Hakkarainen; Karin Odelius; Monika Österberg; KTH; []
   Nyckelord :lignin; microwave-assisted processes; organosolv fractionation; esterification; fused filament fabrication; digital light processing; lignin; mikrovågsassisterade strategier; organosolv-fraktionering; förestring; additiv tillverkning; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Sammanfattning : The chemical diversity and structural complexity of lignin, an abundant biopolymer found in vascular plants, present a multitude of opportunities for the modification and fine-tuning of its properties to suit downstream demands. In this thesis, microwave-assisted strategies were explored as efficient and environment-friendly pathways for lignin valorization towards value-added material applications. LÄS MER