52899-63-5Relevant academic research and scientific papers
Facile one-pot transformation of phenols into o-cyanophenols
Nakai, Yuhta,Moriyama, Katsuhiko,Togo, Hideo
, p. 6077 - 6083 (2015/03/30)
The treatment of phenols with paraformaldehyde in the presence of MgCl2 and Et3N in THF at 80 C, followed by reaction with molecular iodine and aq. ammonia at room temperature provided the corresponding o-cyanophenols in moderate to good yields. The present reaction is a one-pot transformation of phenols into o-cyanophenols using much less expensive reagents than are typically used; the reaction is free of both transition-metals and cyanide. The utility of this reaction was highlighted during our preparation of Febuxostat from p-bromophenol.
B-Alkyl Suzuki-Miyaura cross-coupling of tri-n-alkylboranes with arylbromides bearing acidic functions under mild non-aqueous conditions
Sun, Hui-Xia,Sun, Zhi-Hua,Wang, Bing
experimental part, p. 1596 - 1599 (2009/06/18)
An efficient and chemoselective Pd-catalyzed B-alkyl Suzuki-Miyaura cross-coupling of tri-n-alkylboranes with arylbromides possessing acidic functions is described. This protocol features the relatively weak base Cs2CO3 and mild non-
Direct B-alkyl Suzuki-Miyaura cross-coupling of trialkyl-boranes with aryl bromides in the presence of unmasked acidic or basic functions and base-labile protections under mild non-aqueous conditions
Wang, Bing,Sun, Hui-Xia,Sun, Zhi-Hua,Lin, Guo-Qiang
experimental part, p. 415 - 422 (2009/10/23)
An efficient and chemoselective palladium-catalyzed direct B-alkyl Suzuki-Miyaura cross-coupling of trialkylboranes with diversely functionalized aryl bromides is described. A wide variety of unmasked acidic or basic functions are tolerated. The mild non-
Ortho Cyano Substituted Negative Dielectric Anisotropic Liquid Crystals
Hong, X. J.,Ge, M. J.,Zhao, X. M.,Fen, Z. R.,Liu, Z. J.
, p. 81 - 88 (2007/10/02)
A homologous series of 2'-cyano-4'-n-alkylbiphenylcarboxylates and 4-n-alkylcyclohexyl-p-benzoates were synthesized by treating 2'-cyano-4'-n-alkyl substituted phenols with 4-n-alkyl substituted biphenyl carboxylic acids and cyclohexyl benzoic acids.The method of synthesis was discussed.All these compounds were nematogenic in character and their phase transition temperatures were examined.A wide range of mesomorphism was observed in almost all the homologous series.IR, NMR, and dielectric property of these compounds were studied studied.The negative dielectric anisotropic property of these liquid crystalline compounds makes them suitable for application in positive GH display devices.
(2'-Cyano-4'-n-alkyl)phenyl-3-chloro-4-n-alkoxy benzoates and liquid crystal compositions thereof
-
, (2008/06/13)
A new ester compound suitable for use in a liquid crystal composition is provided. The compound is a (2'-cyano-4'-alkyl)phenyl-3-chloro-4 alkoxybenzoate represented by the following formula: STR1 wherein R and R' are selected from straight-chain alkyl gro
CONVENIENT METHOD OF OBTAINING 2-CYANO-4-ALKYLPHENOLS, 4-CYANOPHENOL AND 4-CYANOANILINE.
Adamska,Dabrowski,Dziabuszek
, p. 93 - 99 (2007/10/02)
A convenient method is described of obtaining 2-cyano-4-alkylphenols and 4-cyanophenol by substituting brombine atom for the cyano group in the respective bromoanisoles and demethylation of the cyanoalkylanisoles. It is suggested to prepare 4-cyanoaniline by reduction of 4-cyano-nitrobenzene with aqueous hydrazine solutions.
Phenyl esters of 4-benzoyloxybenzoic acid
-
, (2008/06/13)
Nematic esters of the formula SPC1 Wherein R1 and R2 are each alkyl, alkoxyalkyl, alkoxy or alkoxyalkoxy of 1 to 10 carbon atoms, X is CN or NO2 and Y is H or X which are useful for influencing the electrooptic properties
