Abstract L’ansa pancréatica est une voie de communication accessoire entre le canal de Wirsung et un conduit pancréatique accessoire ne présentant pas de jonction normale avec le premier. L’association entre cette variante anatomique et la pancréatite aigue dite idiopathique reste hypothétique. Nous rapportons l’observation d’un patient présentant des poussées de pancréatites récidivantes qui s...

We describe a titanocene(III)-catalyzed deuterosilylation of epoxides that provides β-deuterated anti-Markovnikov alcohols with excellent D-incorporation, in high yield, and often diastereoselectivity after desilylation. The key to the success reaction is novel activation method Cp2TiCl2 (tBuC5H4)2TiCl2 BnMgBr PhSiD3 provide [(RC5H4)2Ti(III)D] without isotope scrambling. It was developed discov...

ABSTRACT. 2-N,N-dimethylamino-2-oxido-3-alkyl(aryl)-1-hydro-2-benzo[1,3,2]diazaphosphinin-4-one (2) derivatives are synthesized by one pot reaction reacting equimolar quantities of anthranilic acid, primary amine, and N,N-dimethylphosphoramic dichloride under reflux ethanol with good yields. The structure the compounds were established on basis their infrared, nuclear magnetic resonance spectra...

The nitridotungsten(vi) complex NW(N[i-Pr]Ar)(3) (-N, Ar = 3,5-Me(2)C(6)H(3)) reacts with (CF(3)C(O))(2)O followed by ClSiMe(3) to give the isolable trifluoroacetylimido-chloride complex -(NC(O)CF(3))Cl, with oxalyl chloride to give cyanate-dichloride -(OCN)(Cl)(2), and with PCl(5) to give trichlorophosphinimide-dichloride -(NPCl(3))(Cl)(2). The oxo-chloride complex -(O)Cl, obtained from -N upo...

Tris-(benzyltriazolylmethyl)amine (TBTA) has been immobilized onto a styrenic monomer and subsequently copolymerized with styrene to afford catalytically active and reusable copolymers for the CuAAC reaction.

[reaction: see text] A general procedure for the synthesis of both 12,6- and 12,8-eudesmanolides has been developed. The key step is the titanocene-catalyzed radical cyclization of accessible epoxygermacrolides. The novel reagent 2,4,6-trimethyl-1-trimethylsilylpyridinium chloride, both compatible with oxiranes and capable of regenerating Cp(2)TiCl(2) from Cp(2)Ti(Cl)H and Cp(2)Ti(Cl)OAc, playe...

background: paraquat dichloride is a highly toxic herbicide which is still used in many developing countries. african cat fish (clarias gariepinus) is a commercially important species in many countries and was selected assess accumulation and elimination of paraquat dichloride in its tissues. methods: groups of ten fish with equal lengths and weights were exposed to varying concentrations of pa...

The European Food Safety Authority (EFSA) chose, for 2023, to use its annual external crisis preparedness training benefit members of the Union Agencies Network on Scientific Advice (EU-ANSA). With contractor, Instinctif Partners, EFSA developed a one-and-a-half-day event, which was hosted at offices Agency and Health Work (EU-OSHA) in person Bilbao, Spain. aimed to, achieved several objectives...