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ON　CERTAIN　BOUNDARY　VALUE　PROBLEMS　FOR　NONLINEAR　INTEGRODIFFERENTIAL　EQUATIONS

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Acta Mathematica Scientia 1994年第2期14卷 226-234页

作者： D. G. Pachpatte(Department of Mathematics and Statisics marathwada university Aurangabad 431004 (Maharashtra), INDIA) marathwada univ DEPT MATH & STATAURANGABAD 431004MAHARASHTRAINDIA

In this paper we seek sufficient conditions for the existence, uniqueness and continuous dependene on parameter of solutions of certain boundary value problems for nonlinear integrodifferential equations. The main tool employed in our analysis is based on converting the problems into equivalent Volterra integral equations by means of Green's function representation and the application of the Banach fixed point theorem.

关键词：澹

ON PERTURBED ABSTRACT FUNCTIONAL INTEGRODIFFERENTIAL EQUATION

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Acta Mathematica Scientia 1988年第3期8卷 263-282页

作者： M.B.Dhakne,B.G.Pachpatte Dept.of Math.& Stat. marathwada univ. Aurangabad India Dept.of Math.& Stat. marathwada univ. Aurangabad India

In the present paper the existence of a unique strong solution of a general nonlinear perturbed abstract functional integ odifferential equation is investigated. The technique used in the proof of our main r esult is based on Kato's approach recently extended by Kartsatos and Parrott to evolution equations involving functional perturbations.

关键词： lim Holder 一夕

Eco-friendly synthesis of benzimidazole derivatives using solid acid scolecite catalyst

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Chinese Chemical Letters 2010年第9期21卷 1053-1056页

作者： Lakshman S.Gadekar Balasaheb R.Arbad Machhindra K.Lande Department of Chemistry Dr.Babasaheb Ambedkar Marathwada University

A series of benzimidazole derivatives were synthesized expeditiously in good yields by condensation of 1,2-diaminobenzene and aromatic aldehydes in the presence of modified scolecite *** world wide availability,easy handling and reusability of catalyst,higher yields and shorter reaction times are the advantages of the present method.

关键词： Benzimidazole Ethanol Natural zeolite-scolecite

l-Hexanesulphonic acid sodium salt promoted the one-pot synthesis of amidoalkyl naphthols under microwave-irradiation

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Chinese Chemical Letters 2011年第5期22卷 551-554页

作者： Kirti S.Niralwad Bapurao B.Shingate Murlidhar S.Shingare Organic Research Laboratory Department of ChemistryDr.Babasaheb Ambedkar Marathwada University

Amidoalkyl naphthols have been synthesized in high yields in the presence of 1-hexanesulphonic acid sodium salt as an inexpensive solid catalyst under solvent-free conditions and *** catalyst provides clean conversion... 详细信息

关键词： Aldehydes Naphthols 1-Hexanesulphonic acid sodium salt Amidoalkyl naphthols Microwave-irradiation

Effect of Poly（ethylene glycol）-400 and Carbon on MoOz Nanocomposite Materials and Its Catalytic Activity for Biginelli Reactions

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Chinese Journal of Chemistry 2011年第10期29卷 2049-2056页

作者： Navgire, Madhukar Yelwande, Ajeet Arbad, Balasaheb Lande, Machhindra Department of Chemistry Dr. Babasaheb Ambedkar Marathwada University Aurangabad 431004 India

The effect of addition of poly（ethylene glycol）-400 （PEG-400） and carbon （0, 1, 2 and 3 wt%） as substrates were investigated systematically to get the desired phase of carbon-doped MoO3 material. The carbon source was prepared from the Acacia arabica plant wood. The resulting samples were calcined at 500 ℃. The effect of PEG-400 and carbon composite on the structure, particle size and morphology were investigated. The prepared samples were characterized by XRD, SEM-EDS and FT-IR techniques. The samples with PEG-400 and carbon ad- dition give better control of particle size and porosity. The prepared catalysts were tested for the synthesis of 3,4-dihydropyrimidones via the Biginelli-type condensation reaction. This new method consistently has the advan- tage of excellent yields （88%--93%） and short reaction times （1.5--3 h） than do classical Biginelli reaction conditions.

关键词： carbon substrate MOO3 PEG Biginelli reaction 3,4-dihydropyrimidones

Facile and Rapid Access to Poly Functionalized Pyridine Derivatives

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Chinese Journal of Chemistry 2011年第5期29卷 1049-1054页

作者： Shinde Pravin V. Shingate Bapurao B. Shingare Murlidhar S. Department of Chemistry Dr. Babasaheb Ambedkar Marathwada University Aurangabad-431004 India

An efficient and greener protocol for the synthesis of poly functionalized pyridines using tetra-n-butyl ammonium fluoride （TBAF） in water is established. Remarkable advantages of the present synthetic strategy over the others are shorter reaction times, higher isolated yields, reuse of catalytic system, simple work-up procedure and more especially its applicability to heteryl and aliphatic aldehydes.

关键词： green chemistry pyridines tetra-n-butyl ammonium fluoride (TBAF) water chemistry

Boric acid as an efficient catalyst for the synthesis of 1,1-diacetate under solvent-free condition

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Chinese Chemical Letters 2009年第12期20卷 1453-1456页

作者： K.F Shelke S.B.Sapkal G.K.Kakade P.V.Shinde B.B.Shingate M.S.Shingare Organic Research Laboratory Department of ChemistryDr.Babasaheb Ambedkar Marathwada University

Boric acid （BO3H3） is an inexpensive, efficient and mild catalyst for the synthesis of 1,1-diacetate （acylal） from the various aromatic and heteroaryl aldehydes with acetic anhydride at room temperature under solvent-free condition. The present method does not involve any hazardous organic solvents or catalysts. This method gives notable advantages such as excellent chemoselectivity, mild reaction condition, short reaction times and excellent yield.

关键词： Aromatic and heteroaryl aldehyde Boric acid 1,1-Diacetate Solvent-free

Greener approach towards the facile synthesis of 1,4-dihydropyrano[2,3-c]pyrazol-5-y1 cyanide derivatives at room temperature

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Chinese Chemical Letters 2010年第10期21卷 1175-1179页

作者： Ravi S.Balaskar Sandip N.Gavade Madhav S.Mane Bapurao B.Shingate Murlidhar S.Shingare Dhananjay V.Mane Organic Research Laboratory Department of Chemistry Dr.Babasaheb Ambedkar Marathwada University

This report describes triethylammonium acetate （TEAA） ionic liquid catalyzed one pot synthesis of 6-amino-4-aryl-5-cyano-3- methyl-1-phenyl-1,4-dihydropyrano [2,3-c]pyrazoles by the reaction of aromatic aldehyde, malononitrile and 3-methyl-1-phenyl-2- pyrazolin-5-one at room temperature. TEAA plays dual role as reaction media and catalyst. It can also be easily recovered and reused in several runs. TEAA provides greener reaction protocol to present methodology which obviates the need of organic solvents, expensive and toxic catalyst.

关键词： Triethylammonium acetate (TEAA) 1,4-Dihydropyrano[2,3-c]pyrazol-5-yl cyanides Room temperature

Polyethylene glycol(PEG) mediated expeditious synthetic route to 1,3-oxazine derivatives

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Chinese Chemical Letters 2011年第8期22卷 915-918页

作者： Pravin V.Shinde Amol H.Kategaonkar Bapurao B.Shingate Murlidhar S.Shingare Department of Chemistry Dr.Babasaheb Ambedkar Marathwada UniversityAurangabad 431004MaharashtraIndia

Various 1,3-oxazine derivatives were synthesized in high yields,within shorter reaction times using PEG-400 as a safer medium/ *** synthetic route is exceedingly easy and avoids the use of acid/base catalysts.

关键词： Ecofriendly synthetic protocol Green chemistry 1 3-Oxazines Polyethylene glycol(PEG)