- 2-formyl-3,6-bis(hydroxymethyl)phenyl benzoate in Electrochemical Dry Cell
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Solvated organic compound with the general formula 2-formyl-3,6-bis(hydroxymethyl)phenyl benzoate [C16H14O5] was synthesized. Fourier-transform infrared (FTIR), Mass Spectrometry (MS) and X-ray powder analytical methods were used here for structure elucidation. Characterization revealed a triclinic geometry with space group P1. The refined unit cell parameters are, a = 15.196 ?, b = 14.882 ? and c = 14.606 ?. Development in present work is an idea of the organic electrochemical dry cell. Electrochemists with an idea in vitro/vivo development in present assay are openly encouraged for supporting exploration.
- Khan, Jamil,Muhammad, Bakhtiar,Shahida, Shabnam,Shah, Khizar Hussain,Irfan, Muhammad Imran,Ahmad, Tauqeer,Fahad, Muhammad
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- Synthesis, characterization, and biological evaluation of some novel Schiff bases as potential metabolic enzyme inhibitors
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In this study, a series of novel Schiff base derivatives containing a pyrazolone ring (2a–e) were designed, successfully synthesized for the first time, and characterized by elemental analysis and some spectroscopic methods. These compounds were tested fo
- ?akmak, Re?it,?entürk, Murat,Ba?aran, Eyüp
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- Copper-catalyzed chemoselective oxidative o-aroylation of 2-acetylphenols, alkyl salicylates and 1,3-dicarbonyl compounds using styrene derivatives
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A novel copper-catalyzed chemoselective oxidative O-aroylation of 2-acetylphenols, alkyl salicylates and 1,3-dicarbonyl compounds with a wide range of styrene derivatives are described. This approach provides an efficient chemoselective preparation of phenol, alkyl salicylate and enol esters in good to excellent yields. This method represents an alternative protocol for the classical esterification reactions.
- Kumar, Upendra,Sharma, Ajay,Kumar, Naveen,Pandey, Satyendra Kumar
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- Directing group assisted copper-mediated aroylation of phenols using 2-bromoacetophenones
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A new directing group assisted method for the synthesis of aryl esters is described. In this Cu(ii)-mediated reaction, 2-formylphenols and 2-acetylphenols are easily converted into aryl esters via treatment with a new aroylating agent 2-bromoacetophenone.
- Baruah, Swagata,Borthakur, Somadrita,Gogoi, Sanjib
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supporting information
p. 9133 - 9135
(2017/08/17)
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- Copper-catalyzed oxidative esterification of ortho-formyl phenols without affecting labile formyl group
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A copper-catalyzed oxidative esterification of ortho-formyl phenols with aldehydes using TBHP as oxidant in water is developed. Besides aromatic and aliphatic aldehydes, benzylic alcohols are also suitable for this reaction. The sensitive formyl group rem
- Zheng, Yong,Song, Wei-Bin,Xuan, Li-Jiang
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supporting information
p. 4569 - 4573
(2015/07/02)
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- Solid-Phase Benzoylation of Phenols and Alcohols in Microwave Reactor: An Ecofriendly Protocol
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An efficient solid-phase benzoylation of phenols and alcohols was developed under microwave irradiation. A stoichiometric amount of benzoyl chloride was sufficient to carry out the reaction. This benzoylation features short reaction time, good yields, and easy workup procedures. Furthermore, the scope of the reaction was extended to prepare 3,5-dinitrobenzoyl derivatives of alcohols.
- Chakraborty, Suchandra,Saha, Ahana,Basu, Kaushik,Saha, Chandan
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supporting information
p. 2331 - 2343
(2015/10/12)
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- Metal-free synthesis of aryl esters by coupling aryl carboxylic acids and aryl boronic acids
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A facile synthesis of aryl esters is developed by coupling aryl carboxylic acids and aryl boronic acids in the presence of PhI(OAc)2 and carbonyl diimidazole. A wide range of functional groups were tolerant to the metal-free reaction condition that led to the desired products in good yields.
- Ruso, Jayaraman Sembian,Rajendiran, Nagappan,Kumaran, Rajendran Senthil
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supporting information
p. 2345 - 2347
(2014/05/06)
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- Directing group assisted copper-catalyzed chemoselective O-aroylation of phenols and enols using alkylbenzenes
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By using alkylbenzenes as aroyl surrogates, copper(II) catalyzed chemoselective O-aroylations of 1,3-dicarbonyl compounds and phenolic-OH ortho to carbonyl (-CHO,-COR) groups have been achieved. A dual mechanism operating in tandem for these transformations has been supported by a crossover experiment.
- Rout, Saroj Kumar,Guin, Srimanta,Banerjee, Arghya,Khatun, Nilufa,Gogoi, Anupal,Patel, Bhisma K.
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supporting information
p. 4106 - 4109
(2013/09/12)
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- Intramolecular cycloaddition of azomethine ylides, from imines of O-acylsalicylic aldehyde and ethyl diazoacetate, to ester carbonyl - Experimental and DFT computational study
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Intramolecular 1,3-dipolar cycloaddition of alkoxycarbonyl-substituted azomethine ylides to ester carbonyl was realized for the first time in the reaction of imines of O-acylsalicylic aldehyde with ethyl diazoacetate in the presence of Cu(tfacac)2/s
- Kadina, Anastasia P.,Khlebnikov, Alexander F.,Novikov, Mikhail S.,Perez, Pedro J.,Yufit, Dmitry S.
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body text
p. 5582 - 5591
(2012/08/07)
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- Synthesis, cytotoxicity and topoisomerase inhibition properties of multifarious aminoalkylated indeno[1,2-c]isoquinolin-5,11-diones
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A number of mono- or diaminoalkylated indeno[1,2-c]isoquinolin-5,11-diones analogs of 1 were synthesized and evaluated for their DNA binding affinities, topoisomerase inhibition properties and antiproliferative activities against human cancer cell lines (
- Ahn, Gang,Schifano-Faux, Nadège,Goossens, Jean-Fran?ois,Baldeyrou, Brigitte,Couture, Axel,Grandclaudon, Pierre,Lansiaux, Amélie,Ryckebusch, Adina
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scheme or table
p. 2259 - 2263
(2011/05/15)
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- Intramolecular 1,3-dipolar cycloaddition to ester carbonyl of azomethinylides prepared from aldimines and difluorocarbene
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Azomethinylides generated by reaction of difluorocarbene with N-alkyl- and N-arylimines of O-acylated salycilaldehyde undergo intramolecular 1,3-dipolar cycloaddition to the ester carbonyl group forming regioselectively 2,5-epoxy-1,4-benzoxazepine derivat
- Voznyi,Novikov,Khlebnikov,Kopf,Kostikov
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p. 199 - 205
(2007/10/03)
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- Azomethine ylides derived from dichlorocarbene and O-acylsalicylaldehyde anils in the synthesis of 2,5-epoxy-2,3,4,5-tetrahydro-1,4-benzoxazepin-2-ones and 2-aminoethanols
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Iminiodichloromethanides generated by the reaction of O-acylsalicylaldehyde anils with dichlorocarbene undergo regioselective intramolecular 1,3-dipolar cycloaddition to the ester carbonyl group to give 2,5-epoxy-2,3,4,5-tetrahydro- 1,4-benzoxazepin-2-one
- Voznyi,Novikov,Khlebnikov,Kostikov
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p. 1087 - 1091
(2007/10/03)
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- The Dual Roles of Oxodiperoxovanadate Both as a Nucleophile and an Oxidant in the Green Oxidation of Benzyl Alcohols or Benzyl Halides to Aldehydes and Ketones
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One catalyst, two roles: VO(O2)2- reacts as a nucleophilic oxidant under acidic conditions towards benzyl alcohols. Altogether 15 alcohols have been oxidized, in the absence of organic solvent, in excellent yields. Benzyl halides are also oxidized by H2O 2 in water catalyzed by oxodiperoxovanadate and a phase transfer catalyst into aromatic aldehydes and ketones (see scheme). This reaction is the first green oxidation of benzyl halides.
- Li, Chunbao,Zheng, Pengwu,Li, Jie,Zhang, Hang,Cui, Yi,Shao, Qiyun,Ji, Xiujie,Zhang, Jian,Zhao, Pengying,Xu, Yanli
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p. 5063 - 5066
(2007/10/03)
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- Photoinduced fluorescence changes on E-Z isomerisation in azobenzene derivatives
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New fluorosensors based on azobenzene derivatives have been synthesised, characterised and their photophysical properties investigated. Compounds 2a and 2b undergo E→Z photoisomerisation on irradiation at ~330 nm accompanied by fluorescence enhancement. Z→E isomerisation in the dark is accompanied by a decrease in the fluorescence intensity. These are the first reported examples of fluorescence enhancement on E→Z isomerisation across a N=N bond. Protonation of the azo groups in 2a and 2b is also accompanied by fluorescence enhancement. The origin of the fluorescence enhancement in the cis isomer is explained on the basis of the inhibition of photoinduced electron transfer due to the nonplanar geometry of this isomer, which reduces the effective conjugation of the nitrogen lone pair electrons with the π electrons of the fluorophore.
- Zacharias, Panthapally S.,Ameerunisha, Sardar,Korupoju, Srinivas R.
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p. 2055 - 2059
(2007/10/03)
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- Titanium-Induced Syntheses of Furans, Benzofurans and Indoles
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Highly reactive titanium on graphite as the reagent of choice promotes intramolecular McMurry type reactions of acyloxy- and acylamido carbonyl compounds affording furans, benzofurans and indoles in good to excellent yields.A variety of reducible groups in the substrates is tolerated (e.g. -F, -Cl, -Br, -I, -CF3, -OMe, -CN, -thiophenyl, -COOR, -CONR2) and strained products such as 11h can be obtained, the X-ray analysis of which is reported.The experimental results indicate the possible formation of dianions from the aromatic aldehydes or ketones as reactive intermediates which attack the ester or amide functions in their proximity, rather than a radical path via ketyls.
- Fuerstner, Alois,Jumbam, Denis N.
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p. 5991 - 6010
(2007/10/02)
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