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of 10
pro vyhledávání: '"Odette Sieskind"'
Publikováno v:
Tetrahedron. 51:2009-2022
Six isomeric rearranged cholestanes (diacholestanes) were synthesized and their structures completely determined by X-ray diffraction and NMR. Four of them, the (20R + 20S) 13β(H), 17α(H)- and (20R + 20S) 13α(H), 17β(H)-diacholestanes are identic
Autor:
Odette Sieskind, Pierre Albrecht
Publikováno v:
Tetrahedron Letters. 34:1197-1200
Monoalkylation of benzene with primary, secondary and tertiary alcohols took place in high yields when K10-montmorillonite was used as acidic catalyst. Unexpected formation of 1-phenylalkylbenzenes occured, beside other isomers with primary alcohols.
Autor:
Geoffrey Eglinton, Guy Ourisson, P. Arpino, C. Spyckerelle, James R. Maxwell, R.P. Philp, A. Van Dorsselaer, Pierre Albrecht, P.W. Brooks, M. Dastillung, A. Ensminger, S.J. Gaskell, B.J. Kimble, Odette Sieskind
Publikováno v:
Tetrahedron Letters. 15:1349-1352
Publikováno v:
Geochimica et Cosmochimica Acta. 43:1675-1679
The heating of cholestanol 2a with kaolinite (140°C, 16 hr) mainly leads to a mixture of steranes (40%) and sterenes (35%). The major compounds which are formed have been identified as 5α(H)- and 5β(H)-cholestanes, 4a and 4b, the diacholestenes, 5
Autor:
Odette Sieskind, Raymond Wey
Publikováno v:
Bulletin du Groupe français des argiles. 10:9-14
Sieskind Odette, Wey Raymond. Sur l'adsorption d'amines aliphatiques par la montmorillonite. In: Bulletin du Groupe français des argiles. Tome 10, nouvelle série n°5, 1958. pp. 9-14.
Publikováno v:
J. Chem. Soc., Chem. Commun.. :133-135
Two new 1-methyl rearranged sterenes were formed from cholestan-3β-ol and related compounds by a novel backbone reaction, catalysed by K10-montmorillonite; their structures were determined by 1H and 13C n.m.r. spectroscopy.
Publikováno v:
Chemischer Informationsdienst. 6
Autor:
Guy Ourisson, Odette Sieskind
Publikováno v:
Chemischer Informationsdienst. 3
Die Pyrolyse von Stearinsaure an Montmorillonit bei 250°C (Reaktionsdauer 550 Std.) wird untersucht.
Autor:
Raymond Wey, Odette Sieskind
Publikováno v:
Périodiques Scientifiques en Édition Électronique.
Sieskind Odette, Wey Raymond. Sur la variation de la capacité d'échange de cations base de la montmorillonite - H en fonction du pH. In: Bulletin du Groupe français des argiles. Tome 9, nouvelle série n°4, 1957. pp. 1-6.
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :1833
The lipids extracted from a bituminous shale contained (20R)- and (20S)-5β,14β-dimethyl-18, 19-dinor-8α,9β,10α-cholest-13(17)-enes [(I) and (II); R = H]. Also present were homologues carrying nuclear methyl groups and variously alkylated side ch