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Your search keyword '"Max Koenig"' showing total 3 results
Start Over Author "Max Koenig" Journal phosphorus, sulfur, and silicon and the related elements
3 results on '"Max Koenig"'

1. 'DRY MEDIA PROCESS': AN EFFICIENT TECHNIQUE FOR FAST REGIOSPECIFIC SYNTHESES OF SPIRANIC CYCLOPHOSPHAZENE CRYPTANDS

Author

J.-F. Labarre, François Sournies, Delphine Semenzin, Max Koenig, Sylvie Scheidecker, and Guita Etemad-Moghadam

Subjects
Inorganic Chemistry, Dry media reaction, Aminolysis, Chemistry, Scientific method, Organic Chemistry, Cryptand, Organic chemistry, Selectivity, Biochemistry
Abstract

The aminolysis of the hexachlorocyclotriphosphazene, N3P3Cl6 1, by the oxodiamines H2N-(CH2)3-O(CH2)2-O-(CH2)3 NH2 2 and H2N-(CH2)3-O-(CH2)6-O-(CH2)3-NH2 3 occurs immediately and regiospecifically in dry media leading to the corresponding spiranic cryptands 4 and 5, respectively. This process is an actual improvement (time, selectivity and workup) on the standard reactions.

Published
1993
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2. Diphosphiranes: New Precursors of σ - or π - Diphosphaallyl Complexes

Author

Max Koenig, Guita Etemad-Moghadam, Danielle Ballivet-Tkatchenko, and R. El‐Ouatib

Subjects
Inorganic Chemistry, Metal, Carbon atom, Lability, Metalation, Stereochemistry, Chemistry, visual_art, Organic Chemistry, Polymer chemistry, visual_art.visual_art_medium, Nuclear magnetic resonance spectroscopy, Biochemistry
Abstract

The metalation reactions of the functionalized diphosphiranes 1a–b with the anionic metal transition complexes (M = Mo, W, Co) afford the σ- or π- diphosphaallyl complexes (2 or 3, respectively) as function of the intracyclic carbon atom substituents. The thermal lability of these complexes is detected by variable-temperature NMR spectroscopy.

Published
1993
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3. The Carbenic Insertion into the P-P Bond

Author

R. El Ouatib, Guita Etemad-Moghadam, M. Gouygou, C. Tachon, and Max Koenig

Subjects
Inorganic Chemistry, chemistry.chemical_compound, chemistry, Organic Chemistry, Diphosphenes, Ring (chemistry), Photochemistry, Biochemistry, Medicinal chemistry, Cycloaddition
Abstract

The cycloaddition reactions on Phosphorus Chemistry1 has allowed a new development of the three membered ring organophosphorus compounds. Starting from functionulized diphosphiranes obtained by action of carbenes on diphosphenes, we have studied their ring opening reactions leading to carbon insertion into P-P bond.

Published
1990
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