Sökning: "carbenoid"

Hittade 4 avhandlingar innehållade ordet carbenoid.

1. 1. Amino Aacohols : stereoselective synthesis and applications in diversity-oriented synthesis

   Författare :Staffan Torssell; Peter Somfai; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; amino alcohol; carbenoid; carbonyl ylide; cross-metathesis; diastereoselective; 1; 3-dipolar cycloaddition; sphingosine; Organisk kemi; Organic chemistry; Organisk kemi;

   Sammanfattning : This thesis is divided into three separate parts with amino alcohols as the common feature. The first part describes the development of a novel three-component approach to the synthesis of α-hydroxy-β-amino esters. LÄS MER

3. 2. Stereoselective Synthesis of Amino Alcohols : Applications to Natural Product Synthesis

   Författare :Staffan Torssell; Peter Somfai; Pher G Andersson; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Amino alcohol; asymmetric 1.3-dipolar cycloaddition; azomethine ylide; carbenoid; carbonyl ylide; cross-metathesis; omuralide; oxazolidine; rhodium; sphingosine; stemoamide; stereoselective synthesis; total synthesis.; Organic chemistry; Organisk kemi;

   Sammanfattning : This thesis is divided into four separate parts with amino alcohols as the common feature. The first part of the thesis describes the development of an efficient three-component approach to the synthesis of α-hydroxy-β-amino esters. LÄS MER

4. 3. Development and Application ofEnzymatic Asymmetric Synthesis ofFunctionalized Alcohols

   Författare :Bin Yang; Jan-Erling Bäckvall; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : The main focus of this thesis lies on enzymatic asymmetric organic reactions. In the first part ofthis work, we looked into the lipase-catalyzed transesterification and hydrolysis at the molecularlevel. LÄS MER

5. 4. Synthesis and Applications of P-chirogenic Phosphine Boranes

   Författare :Magnus Johansson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; cytisine; gold I catalysis lipase; P-chirogenic; desymmetrization; phosphine; enantioselective cyclopropanation. enantioselective deprotonation; chirality; asymmetric synthesis; borane;

   Sammanfattning : AbstractThis thesis reports the independent synthesis of both enantiomers of P-chirogenic phosphine ligands and the building blocks thereof, which are suitable for parallel synthesis efforts and for the generation of more diverse libraries of P-chirogenic compound. The use of P-chirogenic phosphine boranes in transition metal-catalyzed reactions, such as palladium-catalyzed allylic alkylation and amination, is also described. LÄS MER