Nasielski, JUniversité Libre de Bruxelles, Faculté des Sciences, Service de Chimie OrganiqueMartin, R. HUniversité Libre de Bruxelles, Faculté des Sciences, Service de Chimie OrganiqueWILEY‐VCH Verlag GmbHHelvetica Chimica Acta
– Introduction of a methyl group in position 4 (angular position) has a deshielding effect on the proton located on carbon 5 (opposite angular position). – The main results are summarized in table I and figure 1.Martin, R. H.Université Libre de Bruxelles, Service de Chimie Organique, ...
We discuss the perspectives of such a technology for the control and optimization of ultrashort X-ray sources.[Journal translation]C. Y. CôtéM. NantelJ. GauthierJ. C. Kieffercanadian journal of physics
Fierens, P. J. CUniversité Libre de Bruxelles, Faculté des Sciences, Service de Chimie OrganiqueMartin, R. HUniversité Libre de Bruxelles, Faculté des Sciences, Service de Chimie OrganiqueWILEY‐VCH Verlag GmbHHelvetica Chimica Acta
New anthr-(1,2)-imidazoles (Ia and Ib, p. 439) and anthra-1,2-triazoles (IIa, IIb and IIc, p. 439) have been synthesized as potential carcinogens.1) The anthrimidazoles Ia and Ib were prepared.a) by treatment of 1,2-diaminoanthracene with HCOOH and CH3COOH respectively, in the ...
The syntheses of 3,4-dimethyl-and 2,3,4-trimethylpyrenes are described. These new alkyl derivatives of pyrene have both been obtained from 2-oxo-3,4-dimethyl-1,2,8,9,10,11-hexahydropyrene (VII). An improved method of preparation of this ketone, involving the following steps, has been...
These afford further proof of the structure assigned to the β-(aroyl)-acrylic acids ( 2 ).P. LambertR. H. MartinBulletin Des Sociétés Chimiques BelgesLambert, P, Martin, R (1952) Bull. Soc. chim. Belg. 61: pp. 124
Summary9,10-dimethyl-1,2,3,4,5,6-tribenzanthracene (VII) has been prepared from the corresponding quinone by the method of Sandin and Fieser. A new synthesis of 1,2,3,4,5,6-tribenzanthraquinone (VI) involving the following steps is described: condensation of phenanthrene-9,10-...
The U.V. spectra of 1,2-di(1′-methyl-naphthyl-2′)ethane, 1,2-di(2′-methyl-naphthyl-1′)ethane, 1,2-di(4′-methyl-naphthyl-1′)ethane and 11,14-dimethylpicene are given.Hebbelynck, M. F.Université Libre de Bruxelles Faculté des Sciences Service de Chimie Organique et ...
Dans le Domaine des D茅riv茅s Polycycliques A Caract猫re Aromatique IV. D茅riv茅s mono et bisubstitu茅s du dibenzo [g, p] chrys猫ne, benzo [a] ph茅nanthro [9,10-c] napthac猫ne-14,19-quinone et t茅trabenzo [b, g, k, p] chrys猫ne 鈥...