7142-94-1Relevant academic research and scientific papers
Water mediated, environmentally friendly, step-wise, tandem & one-pot syntheses of 2-(1H-benzo[d]imidazole-2-yl)-N-arylbenzamides
Reddy, Yervala Dathu,Ramana Reddy, Chittireddy Venkata,Dubey, Pramod Kumar
, p. 2974 - 2979 (2014/01/06)
Water mediated and environmentally friendly, step-wise, tandem & one-pot syntheses of 2-(1H-benzo[d]imidazole-2-yl)-N-arylbenzamide derivatives have been developed by simply combining phthalic anhydride, anilines and phenylenediammonium dihydrogenphosphate. This reaction has an easy workup, provides excellent yields, and uses water as the solvent which is considered to be relatively environmentally benign.
An expeditious synthesis of imides from phthalic, maleic and succinic anhydrides and chemoselective C=C reduction of maleic amide esters
Kumar, Padam Praveen,Reddy, Y. Dathu,Kumari, Y. Bharathi,Devi, B. Rama,Dubey
, p. 392 - 398 (2014/05/06)
Phthalic, maleic and succinic anhydrides have been reacted with aromatic amines to obtain the corresponding monoacid monoamides. The latter have been each transformed into the corresponding cyclic imide derivatives by treating with SOCl2. Alternatively, anhydrides have been reacted with methanolic KOH to obtain monomethyl ester derivatives which on reaction with aromatic amines in the presence of EDC. HCl and HOBt give cyclic imide derivatives. Reaction of monoacid monoamides independently, with SOCl 2 at 0-5°C give the monoamide monoester derivatives. Treatment of monoamide monoester of malic anhydride with NaBH4 leads to the unusual reduction of C=C grouping as well as the carbonyl group of the ester group to from monoamide monoalcohol of succinic anhydride. Preparation of monoamide monoalcohol of succinic anhydride can also be achieved by chemoselective reduction of monoamide monoester of malic anhydride with Mg turnings yielding monoamide monoester of succinic anhydride followed by reduction of the latter with NaBH4.
Aza-DielsAlder reaction between N-aryl-1-oxo-1H-isoindolium ions and tert-enamides: Steric effects on reaction outcome
Jha, Amitabh,Chou, Ting-Yi,ALJaroudi, Zainab,Ellis, Bobby D.,Cameron, T. Stanley
supporting information, p. 848 - 857 (2014/05/06)
The synthesis of 5-substituted 6,6a-dihydroisoindolo[2,1-a]quinolin-11(5H)- ones via [4 + 2] imino-DielsAlder cyclization from N-aryl-3- hydroxyisoindolinones and N-vinyl lactams under Lewis acid-catalysed anhydrous conditions is reported. Reactions of N-(2-substituted-aryl)-3- hydroxyisoindolinones with N-vinylpyrrolidone under identical conditions resulted in the formation of 2-(2-substitued-aryl)-3-(2-(2-oxopyrrolidin-1-yl) vinyl)isoindolin-1-one analogues indicating steric hinderance as the cause of deviation. The probable mechanism of the reaction based on the results from X-ray crystallography and molecular modelling is discussed.
A facile and green synthesis of N-substituted imides
Kumar, Padam Praveen,Rama Devi,Dubey
, p. 1166 - 1171 (2013/09/24)
Anhydrides 1, 6 and 10 have been reacted, independently, with aromatic primary amines 2 in solid phase by simple physical grinding of reactants with p-toluenesulphonicacid as a catalyst to yield corresponding open chain derivatives, monoacid monoamides3,7 and 11 respectively. The latter have each been transformed into the corresponding cyclic derivatives, i.e. imides 5, 9 and 13 respectively in solid phase by simple physical grinding of each with K 2CO3, alkylating agent and tetrabutylammoniumbromide as a catalyst with short reaction times. These cyclic imides can also be obtained by physical grinding of each of 3, 7 and 11 with dicyclohexylcarbodimide as a dehydrating agent in solid phase.
PHTHALANILATE COMPOUNDS AND METHODS OF USE
-
Page/Page column 55, (2011/04/14)
The invention provides antimicrobial compounds and compositions, and methods of using them. The compounds and compositions include, for example, a compound of any one of Formulas I-X. The invention further provides methods of preparing the compounds, and useful intermediates for their preparation. The compounds can possess highly specific and selective activity, such as antibacterial activity and/or enzymatic inhibitory activity. Accordingly, the compounds and compositions can be used to treat bacterial infections, or to inhibit or kill bacteria, either in vitro or in vivo.
Structure-based optimization of a non-β-lactam lead results in inhibitors that do not up-regulate β-lactamase expression in cell culture
Tondi, Donatella,Morandi, Federica,Bonnet, Richard,Costi, M. Paola,Shoichet, Brian K.
, p. 4632 - 4639 (2007/10/03)
Bacterial expression of β-lactamases is the most widespread resistance mechanism to β-lactam antibiotics, such as penicillins and cephalosporins. There is a pressing need for novel, non-β-lactam inhibitors of these enzymes. One previously discovered novel
Microwave assisted synthesis of N-Arylphthalamic acids with hyperlipidemic activity
Sena, Vera L.M,Srivastava, Rajendra M,Oliveira, Shalom P,Lima, Vera L.M
, p. 2671 - 2674 (2007/10/03)
A series of substituted N-arylphthalamic acids 3a-i has been synthesized by the reaction of phthalic anhydride 1 and aryl- or heterocyclic amines 2a-i, in the absence of solvents, in a domestic microwave oven. The formation of nine N-arylphthalamic acids was accomplished in 1-3 min giving excellent yields for compounds 3a-g, but moderate yield of compounds 3h and 3i, respectively. Compounds 3h and 3i are new. Interestingly, N-arylphthalamic acids 3a-i induced hyperlipidemia in Swiss white mice and also increased animals' body weight.
The cyclisation of substituted phthalanilic acids in acetic acid solution. A kinetic study of substituted N-phenylphthalimide formation
Perry, Christopher J.,Parveen, Zahida
, p. 512 - 521 (2007/10/03)
One novel and ten known substituted 3′- and 4′-phthalanilic acids have been prepared. These have been cyclised to two novel and nine known substituted N-phenylphthalimides by heating with glacial acetic acid. Both phthalanilic acids and imides have been characterised in detail and spectroscopic data are given. The kinetics of cyclisation for phthalanilic acids has been examined in detail, and it has emerged that a complex mechanism is operating. This initially involves a reversible, solvent assisted intramolecular nucleophilic attack by amide nitrogen on the carboxylic acid carbonyl. Clear evidence is seen for a long-lived intermediate as a precursor to imide formation. The observed kinetics are rationalised using a model of rapid pre-equilibration, followed by the slow breakdown of the intermediate to imide. Observed rate constants for pre-equilibration show a well behaved, linear Hammett plot (ρ = -1.1), whereas those for formation of imide do not.
Reaction of cyclic anhydrides with aromatic amines: Part I - Synthesis of anilinic acids from phthalic anhydride
Omuaru, Victor O. T.,Boisa, N.,Obuzor, G. U.
, p. 704 - 706 (2007/10/03)
Some unreported anilinic acids 5a-j and 7 have been synthesised and their spectral data reported. Their in vitro insecticidal screening as protectants of maize (Zea mays) against Sitophilus zeamais shows 2-(N-naphthylcarbamoyl)benzoic acid 7 to be the most active member of the series.
Preparation and Characterisation of Chromium(III) Complexes of Maleanilic and Phthalanilic Acids
Sharma, C. L.,Arya, R. S.,Narvi, S. S.
, p. 267 - 269 (2007/10/02)
The complexes of the type , where A-A - maleanilic and phthalanilic acids, and their 4-methyl, 4-chloro, 4-nitro and 1-naphthyl derivatives have been prepared.The magnetic, conductance, ir and electronic spectral studies indicate their octahedral structure.
