نتایج جستجو برای: methyl ketones

تعداد نتایج: 117877  

2011
Mohamed Anoir Harrad Brahim Boualy Abdelghani Oudahmane Daniel Avignant Corrado Rizzoli

The title compound, C(15)H(15)NO, which was synthesized under solvent-free conditions by the reaction of acetoacetone and 2-naphthyl-amine, adopts a Z conformation about the C=C bond. The enamine-ketone fragment is approximately planar [maximum deviation = 0.026 (3) Å] and forms a dihedral angle of 39.78 (3)° with the naphthalene ring system. An intra-molecular N-H⋯O hydrogen bond is observed.

Journal: :Chemical communications 2010
Jean-Philippe Monserrat Guy G Chabot Louis Hamon Lionel Quentin Daniel Scherman Gérard Jaouen Elizabeth A Hillard

The oxidation of the ferrocenyl group of 2'-hydroxyferrocenyl chalcones activates the beta-position of the unsaturated ketone to nucleophilic attack to yield the first examples of ferrocenyl flavones. These compounds are significantly more cytotoxic than their organic analogs on B16 melanoma cells, with IC(50) values in the low micromolar range.

2016
Benjamin F Rahemtulla Hugh F Clark Martin D Smith

A catalytic enantioselective route to C1 - and C2 -symmetric 2,2'-spirobiindanones has been realized through an intramolecular enolate C-acylation. This reaction employs a chiral ammonium counterion to direct the acylation of an in situ generated ketone enolate with a pentafluorophenyl ester. This reaction constitutes the first example of a direct catalytic enantioselective C-acylation of a ket...

Journal: :Applied and environmental microbiology 1979
C T Hou R Patel A I Laskin N Barnabe I Marczak

Cultures of methane- or methanol-utilizing microbes, including obligate (both types I and II) and facultative methylotrophic bacteria, obligate methanol utilizers, and methanol-grown yeasts were isolated from lake water of Warinanco Park, Linden, N.J., and lake and soil samples of Bayway Refinery, Linden, N.J. Resting-cell suspensions of these, and of other known C1-utilizing microbes, oxidized...

Journal: :Open Chemistry 2021

Abstract Mango stem bark extracts (MSBE) have been used as bioactive ingredients for nutraceutical, cosmeceutical, and pharmaceutical formulations due to their antioxidant, anti-inflammatory, analgesic effects. We performed the MSBE preparative column liquid chromatography, which led resolution identification by GC-MS of 64 volatile compounds: 7 hydrocarbons, 3 alcohols, 1 ether, aldehydes/keto...

2011
U Balakrishnan N Ananthi

Various new chiral ligands have been synthesized by the condensation of different esters of L-Valine with different substituted salicylaldehydes in order to find the most effective catalyst for the enantioselctive ketone reduction. Chiral amine synthesized from L-Valine methyl ester and 5-chloro salicylaldehyde is found to catalyse the enantioselective reduction of prochiral ketone with high yi...

Journal: :Combustion and flame 2010
Sarah Bax Mohammed Hichem Hakka Pierre-Alexandre Glaude Olivier Herbinet Frédérique Battin-Leclerc

The experimental study of the oxidation of a blend containing n-decane and a large unsaturated ester, methyl oleate, was performed in a jet-stirred reactor over a wide range of temperature covering both low and high temperature regions (550-1100 K), at a residence time of 1.5 s, at quasi atmospheric pressure with high dilution in helium (n-decane and methyl oleate inlet mole fractions of 1.48 ×...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم پایه 1392

تعدادی از کمپلکس های باز شیف محلول در آب n,n?-bis{5[(triphenylphosphoniumchloride)-methyl]salicylidine}-4-methyl-o-phenylenediamine]copper(??) ([cu(5-ch2pph3-4-methyl-1,2-salophen)](clo4)2), n,n?-bis{5-[(triphenylphosphoniumchloride)-methyl]salicylidine}-4-methyl-o-phenylenediamine]nickel(??) ([ni(5-ch2pph3-4-methyl-1,2-salophen)](clo4)2), و کمپلکس های نانو باز شیف محلول در آب n,n?-bis{5...

Journal: :Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology 2003
Xue-gong Lei Steffen Jockusch M Francesca Ottaviani Nicholas J Turro

Photolysis of dibenzyl ketone derivatives adsorbed on ZSM-5 zeolites produces persistent benzyl radicals (initiator radicals), which add to methyl acrylates (monomers) to generate persistent adduct radicals. Both initiator and adduct radicals are readily observable by conventional steady-state EPR spectroscopy at room temperature and are persistent for time periods ranging from seconds to many ...

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