139507-50-9Relevant articles and documents
Asymmetric Transfer Hydrogenation of α-Keto Amides; Highly Enantioselective Formation of Malic Acid Diamides and α-Hydroxyamides
Gediya, Shweta K.,Vyas, Vijyesh K.,Clarkson, Guy J.,Wills, Martin
supporting information, p. 7803 - 7807 (2021/10/20)
The asymmetric transfer hydrogenation (ATH) of α-keto-1,4-diamides using a tethered Ru/TsDPEN catalyst was achieved in high ee. Studies on derivatives identified the structural elements which lead to the highest enantioselectivities in the products. The α-keto-amide reduction products have been converted to a range of synthetically valuable derivatives.
Total synthesis of symbioramide: A flexible approach for the efficient preparation of structural isomers
Prevost, Sebastien,Ayad, Tahar,Phansavath, Phannarath,Ratovelomanana-Vidal, Virginie
experimental part, p. 3213 - 3226 (2012/01/03)
A concise, enantioselective total synthesis of symbioramide, starting from simple achiral compounds and racemic α-amino-β-keto ester derivatives is reported. This highly flexible strategy allowed the efficient preparation of seven structural isomers of the natural product as well. The synthesis relies on a convergent route that involves the efficient stereoselective reduction of a α-keto-β-yne ester, and the dynamic kinetic resolution of an α-amino-β-keto ester through ruthenium-mediated asymmetric hydrogenation. Copyright
Oxalic acid derivatives, their preparation and plant growth regulators containing them
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, (2008/06/13)
Oxalylhydroxamic acid derivatives of the formula I where the substituents have the following meanings: X is oxygen or sulfur; R1 is substituted or unsubstituted alkyl, alkenyl or alkynyl; substituted or unsubstituted monocyclic or polycyclic cycloalkyl or cycloalkylmethyl; substituted or unsubstituted phenyl or phenyl-C1 -C4 -alkyl; R2 is hydrogen or alkyl; R3 is substituted or unsubstituted alkyl, alkenyl or alkynyl; substituted or unsubstituted monocyclic or polycyclic cycloalkyl; substituted or unsubstituted phenyl-C1 -C4 -alkyl or phenoxy-C1 -C4 -alkyl; and their agriculturally useful salts; their manufacture; growth-regulating agents containing them; and methods of regulating plant growth.