6697-12-7Relevant academic research and scientific papers
PROCESS FOR THE PREPARATION OF ALKOXYLATES COMPOSITIONS
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Page/Page column 21; 22, (2019/06/17)
A mixture of two alkoxylates surfactants, one being an aryl aliphatic carbinol alkoxylate, the other one being a dialiphatic carbinol alkoxylate, said mixture being useful for stabilizing emulsions and dispersions used in agricultural or pharmaceutical formulations. The alkoxylates surfactants may serve as substitutes for nonylphenol ethoxylates (NPE) and tristyrylphenol ethoxylates (TSE).
PROCESS FOR THE CATALYTIC DECARBOXYLATIVE CROSS-KETONIZATION OF ARYL AND ALIPHATIC CARBOXYLIC ACID
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Page/Page column 66-69, (2019/01/08)
The present invention pertains to a process for the cross-ketonization (Piria reaction) between an aryl carboxylic acid and an aliphatic carboxylic acid using a metal-based compound and a slight or a moderate excess of aryl carboxylic acid. A good selectivity, up to 99 mol %, can be achieved. The aryl aliphatic ketone can be used for the preparation of surfactants and other downstream products.
Liquid-crystalline polymorphism of symmetrical azobananas: Bis(4-(4-alkylphenyl)azophenyl) 2-nitroisophtalates
Zygadlo,Dardas,Nowicka,Hofmann,Galewski
scheme or table, p. 283 - 291 (2011/08/02)
In this paper we present a series of novel compounds, bis(4-(4-alkylphenyl) azophenyl) 2-nitroisophtalates, which exhibit nematic and banana-type liquidcrystalline phases. The alkyl chain length varies from 1 to 18 carbons. The first ten members of this series exhibit nematic phase. The last eleven compounds exhibit banana-type liquid crystalline phases. The propyl and pentyl derivatives have extra second type of banana mesophase. Copyright Taylor & Francis Group, LLC.
One-pot synthesis of aldehydes or ketones from carboxylic acids via in situ generation of Weinreb amides using the Deoxo-Fluor reagent
Kangani, Cyrous O.,Kelley, David E.,Day, Billy W.
, p. 6289 - 6292 (2007/10/03)
A one-pot, high yield conversion of carboxylic acids to the corresponding aldehydes and ketones is described. The highlight of this methodology is the in situ generation of Weinreb amides with the Deoxo-Fluor reagent, which undergo nucleophilic reaction with DIBAL-H and Grignard reagents.
A new ketone synthesis by palladium-catalyzed cross-coupling reactions of esters with organoboron compounds
Tatamidani, Hiroto,Kakiuchi, Fumitoshi,Chatani, Naoto
, p. 3597 - 3599 (2007/10/03)
(Chemical Equation Presented) The palladium-catalyzed coupling reaction of 2-pyridyl esters with organoboron compounds is described. The reaction is compatible with various functional groups and proceeds under mild reaction conditions. The coordination of the nitrogen atom to Pd is a key step for efficient reaction.
THE CHEMISTRY OF ORGANOBISMUTH REAGENTS PART XIII LIGAND COUPLING INDUCED BY Pd(0)
Barton, Derek H. R.,Ozbalik, Nubar,Ramesh, Manian
, p. 5661 - 5668 (2007/10/02)
Palladium zero converts triphenylbismuth quantitatively to diphenyl and metallic bismuth.many other derivatives of Bi(III) and Bi(V) are similarly transformed to diaryls in excellent yield.Similar reactions with triphenylantimony and with perphenyl lead derivatives suggest that number of non-transition metal elements should show similar behaviour.Acid chlorides also react under mild conditions with triphenylbismuth under catalysis by palladium(0) to furnish phenylketones in excellent yield (with respect to the triphenylbismuth).All three phenyls are transferred when a suitable excess of the acid chloride is used.Diaryl formation is a minor side reaction.
REACTION OF (E)-PHENYL 2-PYRIDYL KETONE O-ACYLOXIMES (PPAO) WITH GRIGNARD REAGENTS. A CONVENIENT AND HIGHLY CHEMOSELECTIVE SYNTHESIS OF KETONES
Miyasaka, Tadayo,Monobe, Hideaki,Noguchi, Shunsaku
, p. 449 - 452 (2007/10/02)
The reaction of (E)-phenyl 2-pyridyl ketone O-acyloximes (PPAO) with Grignard reagents was found to be widely applicable to the chemoselective synthesis of various ketones in good yields under mild conditions.
