Search results for "ceny"
showing 10 items of 117 documents
CCDC 1440374: Experimental Crystal Structure Determination
2016
Related Article: Kabali Senthilkumar, Krishnan Thirumoorthy, Claudia Dragonetti, Daniele Marinotto, Stefania Righetto, Alessia Colombo, Matti Haukka, Nallasamy Palanisami|2016|Dalton Trans.|45|11939|doi:10.1039/C6DT01590E
CCDC 952664: Experimental Crystal Structure Determination
2013
Related Article: Naima Khiri-Meribout, Etienne Bertrand, Jérôme Bayardon, Marie-Joëlle Eymin, Yoann Rousselin, Hélène Cattey, Daniel Fortin, Pierre D. Harvey, and Sylvain Jugé|2013|Organometallics|32|2827|doi:10.1021/om400229p
CCDC 1538079: Experimental Crystal Structure Determination
2018
Related Article: Kristina Hanauer, Christoph Förster, and Katja Heinze|2018|Eur.J.Inorg.Chem.||3537|doi:10.1002/ejic.201800570
Drosophila cuticular hydrocarbons revisited : Mating status alters cuticular profiles
2010
Editor: Frederic Marion-Poll, INRA - Paris 6 - AgroParisTech, France.; International audience; Most living organisms use pheromones for inter-individual communication. In Drosophila melanogaster flies, several pheromones perceived either by contact/at a short distance (cuticular hydrocarbons, CHs), or at a longer distance (cis-vaccenyl acetate, cVA), affect courtship and mating behaviours. However, it has not previously been possible to precisely identify all potential pheromonal compounds and simultaneously monitor their variation on a time scale. To overcome this limitation, we combined Solid Phase Micro-Extraction with gas-chromatography coupled with mass-spectrometry. This allowed us (i…
Pre-imaginal conditioning alters adult sex pheromone response in Drosophila
2018
https://peerj.com/articles/5585/#supplemental-information; International audience; Pheromones are chemical signals that induce innate responses in individuals of the same species that may vary with physiological and developmental state. In Drosophila melanogaster, the most intensively studied pheromone is 11-cis-vaccenyl acetate (cVA), which is synthezised in the male ejaculatory bulb and is transferred to the female during copulation. Among other effects, cVA inhibits male courtship of mated females. We found that male courtship inhibition depends on the amount of cVA and this effect is reduced in male flies derived from eggs covered with low to zero levels of cVA. This effect is not obser…
Zastosowanie metody AHP do tworzenia rankingu kryteriów oceny wiarygodności witryn internetowych
2020
Wiedza w zakresie pozyskiwania, oceny i efektywnego wykorzystania informacji jest niezbędna nie tylko uczniom, studentom i nauczycielom (w tym akademickim), ale także projektantom i twórcom witryn oraz dostawcom treści internetowych. W szczególności dotyczy to możliwości oceny wiarygodności witryn internetowych. Problemem jest nie tylko wybór odpowiednich kategorii i kryteriów tej oceny, ale także uwzględnienie wszystkich tych kryteriów w końcowej ocenie. Celem artykułu jest ustalenie rankingu ważności kryteriów oceny wiarygodności witryn internetowych z punktu widzenia ekspertów. Wymagało to udzielenia odpowiedzi na następujące pytania: - Jak stworzyć ramy oceny wiarygodności witryn? - Któ…
CCDC 1962439: Experimental Crystal Structure Determination
2020
Related Article: Philipp Veit, Sebastian Seibert, Christoph Förster, Katja Heinze|2020|Z.Anorg.Allg.Chem.|646|940|doi:10.1002/zaac.201900350
Ferrocenylbis(ylene) phosphoranes
1997
The ferrocenylbis(methylene)phosphorane Fc-P(=CTms 2 ) 2 ( 1 ) (Fc = −C 5 H 4 FeC 5 H 5 ) can be synthesized starting from ferrocenyldichlorophosphane FcPCl 2 or ferrocenyldilithiophosphane FcPLl 2 . The X-ray structure of ( 1 ) shows some unusual structural features, which indicate considerable electronic interaction of the ferrocenyl group and the σ 3 λ 5 -phosphorane unit. As a consequence of this interaction, the rotational barrier of the methylene bonds is extraordinary low. Therefore, in contrast to other bis(methylene)phosphoranes, the endo - and exo -Tms groups are indistinguishable on the NMR time scale even at −100°C. The analogous ferrocenylbis(imino)phosphorane Fc-P(=NTms) 2 ( 9…
Efficient palladium–ferrocenylphosphine catalytic systems for allylic amination of monoterpene derivatives
2006
Ferrocenylphosphines added to [Pd(µ-Cl)(η3-C3H5)]2 dimeric precursor produce efficient catalysts to effect the allylic amination of terpenic allylacetates. Particularly convenient are tetrakis(diphenylphosphino)ferrocene and 1,1′-bis(diphenylphosphino)ferrocene, which allow the amination of allylacetates with good to excellent selectivity, and have turnover numbers as high as 80 000, for instance, for the formation of allylaniline. Herein, we report on reactions that selectively transform geranylacetate, nerylacetate, linalylacetate and perillylacetate into the corresponding allylic amines. These preparative methods give facile access to various products of great potential industrial intere…
Input of P, N-(phosphanyl, amino)-ferrocene hybrid derivatives in late transition metals catalysis
2018
International audience; Unequally functionalized ferrocenes give access to valuable hemilabile reactivity in catalytic reaction. We address the synthesis of hybrid (P, N)-ferrocenyl compounds for which recent catalytic breakthrough applications have been reported, transversely in late transition metals chemistry. Palladium, nickel, rhodium, iridium, and emerging iron and gold catalysis are illustrated from selected examples, which include CC bond formation from cross-coupling and polymerization, allylic substitution, cyanation, hydroformylation, CH arylation and silylation and hydrogenation reactions.