Novel Diamine and Phosphinamine Ligands and Their Application in Asymmetric Catalysis PDF Download
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Author: Aisling M. Lakes
Publisher:
ISBN:
Category : Asymmetric synthesis
Languages : en
Pages : 182
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Author: Aisling M. Lakes
Publisher:
ISBN:
Category : Asymmetric synthesis
Languages : en
Pages : 182
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Author: Annette Farrell
Publisher:
ISBN:
Category : Asymmetric synthesis
Languages : en
Pages : 167
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Author: Anne-Marie Carroll
Publisher:
ISBN:
Category : Chirality
Languages : en
Pages : 278
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Author: Piotr Wiktor Osiński
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ISBN:
Category :
Languages : en
Pages : 176
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Author: Bilal El Asaad
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ISBN:
Category :
Languages : en
Pages : 0
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New chiral N-arylated diamine ligands, derived from 1,2-diaminocyclohexane and a and ß-cyclic-aromatic ketone, were synthesized by dehydrogenative alkylation catalyzed by palladium on carbon (Pd/C). This method, allowed to prepare a series of chiral N,N-diarylated diamine and N-aryl diamine ligands with very good isolated yield.First of all, the applicability of the synthesized chiral diamine ligands was successfully examined in asymmetric transfer hydrogenation with homogeneous iridium catalyst associated to formic acid and its sodium salt. Various aromatic ketones were reduced to chiral alchohol with a complete conversion and high enantioselectivity (ee up to 93%). Then, two of the prepared chiral diamine, N,N'-dinaphtyl diaminocylohexane and N-naphtyl diaminocylohexane combined to copper (II), have been evaluated in asymmetric Henry reaction between benzaldehyde derivatives and nitromethane leading to ß-nitro-aryl-alcohol with good enantioselectivities (ee up to 83%) and good isolated yields.Furthermore, we transform these two ligands into imidazolinium salts precursor of carbenes, for further application in asymmetric catalysis. The mono N-arylated diamine was transformed into mono-thiourea ligand. These three new ligands were obtained with very good isolated yields.
Author: Cian Reid
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: Murthy Narasimha Cheemala
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ISBN:
Category :
Languages : en
Pages : 191
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Author: Cormac Paul Saunders
Publisher:
ISBN:
Category : Asymmetric synthesis
Languages : en
Pages : 243
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Author: David John Connolly
Publisher:
ISBN:
Category : Asymmetric synthesis
Languages : en
Pages : 318
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Author:
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ISBN:
Category :
Languages : en
Pages : 334
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