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Effects of some Nitrogen Bases on the Oxygenation of Tetralin with Sodium Periodate Catalyzed by Manganese（Ⅲ）meso- Tetraphenylporphyrin as a Model Compound of Cytochrome P-450

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Chinese Journal of Chemistry 2007年第7期25卷 1031-1035页

作者： reza, tayebee Department of Chemistry Sabzevar Teacher Training University Sabzevar 397 Iran

The effect of some nitrogen bases on the oxygenation of tetralin by sodium periodate, catalyzed by Mn（TPP）OAc, was evaluated. A series of eight bases, including imidazole, pyridine, and quinuclidine, was used. Binding of axial ligand to the four-coordinate Mn（Ⅲ）-center influenced the efficiency and selectivity of the catalytic oxygenation system.

关键词： nitrogen donor sodium periodate oxidation manganese porphyrin tetralin

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Environmentally Benign Oxidation of Some Organic Sulfides with 34% Hydrogen Peroxide Catalyzed by Simple Heteropolyoxometalates

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Chinese Journal of Chemistry 2007年第9期25卷 1340-1343页

作者： tayebee, reza ALIZADEH, Mohammad Hassan Department of Chemistry Sabzevar University Sabzevar 397 lran Department of Chemistry Ferdowsi University Mashhad 91779 lran

An environmentally benign oxygenation protocol was developed for selective oxidation of some types of aromatic and aliphatic sulfides in good to excellent yields utilizing 34% hydrogen peroxide catalyzed by simple heteropolyoxometalates in normal drinking water at room temperature. The catalysts could be recovered and reused for at least seven reaction cycles under the described reaction conditions without considerable loss of reactivity. This procedure introduced a new insight into the use of simple heteropolyanions as recoverable catalysts for the oxidation of organic sulfides by an environmentally acceptable protocol. Keywords

关键词： oxidation heteropolyacid catalysis hydrogen peroxide organic sulfide

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H_5PW(10)V_2O_(40)催化高效环保合成14-芳基-14H-二苯并[a,j]氧杂蒽(英文)

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催化学报 2012年第6期33卷 962-969页

作者： reza tayebee Shima TIZABI Department of Chemistry School of SciencesHakim Sabzevari University

A rapid and efficient procedure for the preparation of various aryl-14H-dibenzo[a,j]xanthenes was *** method developed produced excellent yields via one-pot condensation of β-naphthol with various aryl-aldehydes in the presence of Keggin vanadium substituted heteropolyacid,H5PW10V2O40,as catalyst under solvent free *** present methodology therefore offered several advantages but not limited to excellent yields(82%-98%),short reaction times(30-50 min),mild reaction conditions,simple work-up,as well as the utilization of cheap and environmentally benign catalyst in the absence of organic solvents.

关键词： xanthene one-pot condensation aldehyde β-naphthol heteropolyacid Keggin solvent-free

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钒取代的杂多酸催化一锅四组分Dakin-West反应合成β-乙酰氨基酮(英文)

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催化学报 2012年第6期33卷 923-932页

作者： reza tayebee Shima TIZABI Department of Chemistry School of SciencesHakim Sabzevari University

The multicomponent condensation of an aryl aldehyde,acetyl chloride,acetonitrile,and enolizable ketone as one-pot synthesis of β-acetamido ketones in high yields was investigated using commercial,non-corrosive,and environmentally benign Keggin and Wells-Dawson heteropolyacid *** best catalyst was *** methodology used simple experimental conditions,and the short reaction times and high yields indicate it is a useful strategy for the large scale synthesis of β-acetamido ketones.

关键词： homogeneous catalysis heteropolyacid Keggin Wells-Dawson Dakin-West β-acetamido ketone

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以磷酸二氢铵为催化剂一锅法合成 3,4-二氢嘧啶-2-酮(英文)

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催化学报 2012年第4期33卷 659-665页

作者： reza tayebee Behrooz MALEKI Malihe GHADAMGAHI Department of Chemistry School of SciencesHakim Sabzevari University

A one-pot three component Biginelli condensation of different substituted aromatic and aliphatic aldehydes with ethyl acetoacetate and urea to the respective 3,4-dihydropyrimidin-2-(1H)-ones under solvent-free conditions that is simple,effective,and environmentally friendly was *** dihydrogen phosphate(NH4H2PO4) was used as a non-toxic,inexpensive,and easily available *** facile reaction condition and simple isolation and purification procedures of this method make it a good option for the synthesis of dihydropyrimidinones.

关键词：化学催化高压高温

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