Preparative-scale synthesis of two metabolites isolated from soil treated with Zoxium fungicide and Kerb herbicide
The preparation in multigram scale of two metabolites 3-(3,5-dichloro-4-methyl-benzoylamino)-2hydroxy-3-methyl-pentanoic acid and 3-(3,5-dichloro-benzoylamino)-3-methyl-2-oxo-butyric acid isolated from soil treated with either Zoxium fungicide or Kerb herbicide was efficiently accomplished using a common 5-step synthetic process starting from easily available raw materials.
Michelotti, Enrique L.,Borrell, Jose I.,Roemmele, Renee,Matallana, Josep L.,Teixido, Jordi,Bryman, Lois M.
p. 495 - 498
(2007/10/03)
A convenient synthesis of aziridine-2-carboxylic esters
Optically active oxirane-2-carboxylic esters, prepared from allylic alcohols employing the Sharpless epoxidation, were treated with sodium azide.The azido alcohols obtained were subsequently converted into aziridine-2-carboxylic esters by reaction with triphenylphosphine, in good yields and with high optical purity.Various racemic oxirane-2-carboxylic esters were subjected to the same sequence of reactions.
Legters, Johan,Thijs, Lambertus,Zwanenburg, Binne
p. 1 - 15
(2007/10/02)
KINETIC RESOLUTION OF RACEMIC β,γ-EPOXY ESTERS WITH PIG LIVER ESTERASE (PLE, E.C. 3.1.1.1.)
The β,γ-epoxy esters (+/-)-2 to (+/-)-6 were synthetisized.The E-values of kinetic resolution of 2, 3, 4, and 6 with PLE and the absolute configuration of the products of the hydrolysis were determined by the conversion to known compounds.
Mohr, Peter,Roesslein, Lukas,Tamm, Christoph
p. 2513 - 2516
(2007/10/02)
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