13 C- and 17 O-relaxation times measured in cyclic ethers, cyclic ketones, and lactones allowed the determination of the quadrupolar interaction at the O-site. Values obtained for six-membered rings can be used as standard values for ethers (χ = 13 MHz), ketones (χ = 10.5 MHz), and ...
However, we obtain dimethyl-2,6 phenylselenolcarboxylate-3 γ-pyrone which is yet converted to seleno-1 chromone. We discuss all these results: the Pechmann and Simonis reactions intermediates are to be reconsidered, especially phenyl acetylacetates (O, S, Se)....
The results obtained during this study are compared to those obtained from the reduction of the corresponding ketones by LiAlH4. [Journal translation]Jean-Claude RicherClaude Lamarrecanadian journal of chemistry
Département Science, ZYMA S.A. (Directeur Dr. P. Grumbach).doi:10.1002/hlca.19730560516FAO, RomeItaly). Tratado Internacional sobre los Recursos Fitogeneticos para la Alimentacion y la AgriculturaAGPHelvetica Chimica ActaSechaud J (1956) Helv Chim Acta 39:1257...
The testing is voluntary and is performed upon the companies applications for approval. The trials are carried out according to standardized Danish guidelines, most of which are based on ...Dufaud OlivierCorbel SergeDjf Rapport Markbrug
C. Brianso, Cesium uranium germanium tungstate, Cs 12 [U(GeW 11 O 39 ) 2 ]·13–14 H 2 O , Acta Crystallogr., Sect B 36:2012 (1980)C. Tourné, G. Tourné, M. C. Brianso . Acta Crystallogr., Sect. B36 (1980) 2012.
Francisco, ChristianGroupe de Recherches en Biologie et Chimie des Végétaux Marins Université de Perpignan (France)Piovetti, LouisGroupe de Recherches en Biologie et Chimie des Végétaux Marins Université de Perpignan (France)Gonzales, Emmanuel...