Zobrazeno 1 - 10
of 156
pro vyhledávání: '"A. C. Kock-Van Dalen"'
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 105:421-427
Cyclopropanation of olefins by ethyl diazoacetate has been carried out making use of the catalytic action of Cu-loaded X-type zeolites upon the decomposition of ethyl diazoacetate. The activity of the NaCuX zeolites is linearly dependent upon the Na-
Autor:
Fourrier, Pierre1,2 (AUTHOR), Dulaquais, Gabriel3 (AUTHOR) gabriel.dulaquais@univ-brest.fr
Publikováno v:
Limnology & Oceanography Letters. Dec2024, Vol. 9 Issue 6, p735-744. 10p.
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 106:596-598
Different insoluble silver salts were used to promote the β-glycosidic bond formation between the aglycon methyl (2,3,4-tri-O-benzyl-α-D-glucopyranosyl bromide) uronate (1) and the aglycon 3-O-acetyl-1,6-anhydro-2-azido-2-deoxy-D-glucopyranose (2).
Publikováno v:
Journal of Molecular Catalysis B: Enzymatic. 2:141-145
Ammoniolysis of triglycerides to the corresponding fatty acid amides is efficiently catalysed by Candida antarctica lipase (Novozym 435). Thus, olive oil gave 90% of nearly pure oleamide after 72 h at 60 °C. Jojoba wax was similarly converted into a
Publikováno v:
Annals of the New York Academy of Sciences. 799:346-350
Publikováno v:
Journal of Molecular Catalysis B: Enzymatic. 1:109-113
Ammoniolysis of triglycerides to the corresponding fatty acid amides is efficiently catalysed byCandida antarctica lipase (Novozym 435). Thus, olive oil gave 90% of nearly pure oleamide after 72 h at 60°C. Jojoba wax was similarly converted into a m
Autor:
Marianne Baas, Jaap S. Sinninghe Damsté, Math E.L. Kohnen, Jan W. de Leeuw, A. C. Kock-Van Dalen, Stefan Schouten
Publikováno v:
Organic Geochemistry. 23:765-775
Polar fractions of three immature sulphur-rich sediments and four sulphur-rich oils, all of Miocene age, were studied using two selective chemolytic methods, namely methyl lithium/methyl iodide, which selectively cleaves polysulphide bonds, and Raney
Autor:
A.Y. Huc, W. Irene C. Rijpstra, Jaap S. Sinninghe Damsté, Fabien Kenig, A. C. Kock-Van Dalen, Jan W. de Leeuw
Publikováno v:
Geochimica et Cosmochimica Acta. 59:2999-3015
n-Alkanes, highly branched isoprenoids, monomethylalkanes (MMAs), dimethylalkanes (DMAs), and trimethylalkanes (TMAs) are the most abundant components in the hydrocarbon fractions of extracts of four modern and two Holocene cyanobacterial mats (t1500
Publikováno v:
Biocatalysis. 10:307-316
A new enzymatic reaction of carboxylic esters and ammonia (ammonolysis) was studied. This reaction provides a synthetically useful and mild alternative for the synthesis of amides. Several lipases and one esterase acted as catalyst. Ammonolysis of es
Autor:
A. C. Kock-Van Dalen, Marianne Baas, Math E.L. Kohnen, Jaap S. Sinninghe Damsté, Jan W. de Leeuw
Publikováno v:
Geochimica et Cosmochimica Acta. 57:2515-2528
Sulphur-bound steroid and phytane moieties in macromolecules present in the polar fractions of six immature samples (both crude oils and sediment extracts) have been analyzed using S-selective chemolysis methods and analytical pyrolysis. The identifi