Synthesis of Some New Bis[1-(2-aroyl-3-aryl)cyclopropylcarbonyl]benzenes and Pyridines under Phase Transfer Catalysis (PTC) Method

1993 ◽  
Vol 58 (6) ◽  
pp. 1437-1444 ◽  
Author(s):  
Dandu Bhaskar Reddy ◽  
Biradavolu Seenaiah ◽  
Adivireddi Padmaja ◽  
Pallela Venkata Ramana Reddy
Keyword(s):  
Spectral Data ◽  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
The Other

Some new bis[1-(2-aroyl-3-aryl)cyclopropylcarbonyl]benzenes and pyridines IV - VI have been prepared by the cycloaddition of dimethylsulfonium phenacylide to 1,1'-(1,3-, 1,4-phenylene, and 2,6-pyridylene)-bis(3-aryl-2-propen-1-ones) I - III by adopting two different methods. The advantages of the PTC method over the other have been discussed. The structures of the compound have been confirmed by spectral data.

Cyclopropanation of Phenyl Styryl Sulfones with Phenacylsulfonium Ylides Under Phase-Transfer Catalysis

1998 ◽  
Vol 63 (6) ◽  
pp. 835-841 ◽  
Author(s):  
Adivireddi Padmaja ◽  
Kalluru Ramachandra Reddy ◽  
Venkatapuram Padmavathi ◽  
Dandu Bhaskar Reddy
Keyword(s):  
Spectral Data ◽  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
Direct Addition ◽  
Substituted 1

Cyclopropanation of substituted phenyl styryl sulfones 1 with dimethylsulfonium phenacylides was carried out by two different methods (under PTC catalysis with in situ generation of the ylides and by direct addition of ylides) to obtain a series of substituted 1-benzenesulfonyl-2-benzoyl-3-phenylcyclopropanes 2. The PTC method was found to be more facile and efficient. The spectral data of cyclopropanes 2 are discussed.

Synthesis of N-Phenylsulfonyl Protected Furo[3,2-b]pyrroles

1994 ◽  
Vol 59 (2) ◽  
pp. 499-502 ◽  
Author(s):  
Vladimír Bobošík ◽  
Alžbeta Krutošíková
Keyword(s):  
Nitrogen Atom ◽  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
The Other ◽  
Lithium Salts ◽  
Benzenesulfonyl Chloride ◽  
Heterocyclic Molecules ◽  
Other Hand ◽  
Indole Series

Protection of nitrogen atom of heterocyclic molecules, such as indole and pyrrole types, enables various reactions of these systems. N-Phenylsulfonyl derivatives, which have been widely used for this purpose, were prepared in the indole series by the reaction of N-sodium and N-lithium salts with benzenesulfonyl chloride. This method requires waterfree and oxygenfree conditions. On the other hand, the phase transfer catalysis conditions used in this work obviates these disadvantages. We therefore selected the latter method for the preparation of variously substituted 4-phenylsulfonylfuro[3,2-b]pyrroles (I - VII) and 1-phenylsulfonylbenzo[b]furo[3,2-b]pyrroles (VIII - IX).

The Role of Phase Transfer Catalysis in the Microwave-Assisted N-Benzylation of Amides, Imides and N-Heterocycles

2009 ◽  
Vol 6 (7) ◽  
pp. 529-534 ◽  
Author(s):  
Istvan Greiner ◽  
Fanni Sypaseuth ◽  
Alajos Grun ◽  
Eva Karsai ◽  
Gyorgy Keglevich
Keyword(s):  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
Microwave Assisted

Green Application of Phase-Transfer Catalysis in Oxidation: A Comprehensive Review

2020 ◽  
Vol 17 (4) ◽  
pp. 405-411
Author(s):  
Chuan-Hui Wang ◽  
Chen-Fu Liu ◽  
Guo-Wu Rao
Keyword(s):  
Organic Chemistry ◽  
Green Chemistry ◽  
Oxidation Reaction ◽  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
Important Application ◽  
Oxidation Reactions ◽  
Comprehensive Review ◽  
Phase Transfer Catalysts ◽  
Onium Salts

Oxidation reactions have emerged as one of the most versatile tools in organic chemistry. Various onium salts such as ammonium, phosphonium, arsonium, bismuthonium, tellurium have been used as phase transfer catalysts in many oxidation reactions. Certainly, considerable catalysts have been widely used in Phase-Transfer Catalysis (PTC). This review focuses on the application of PTC in various oxidation reaction. Furthermore, PTC also conforms to the concept of “Green Chemistry”. <p></p> • Oxidation has become one of the most widely used tools in organic chemistry and phase transfer catalysts has been widely used in oxidation. <p></p> • The application of phase transfer catalysts in oxidation reaction will be summarized. <p></p> • Phase transfer catalysts have important application in various oxidation reaction.

scholarly journals Synthesis of sec-Butyl Disulfide by Phase Transfer Catalysis

2015 ◽  
Vol 27 (9) ◽  
pp. 3208-3210
Author(s):  
Xinqi Liu ◽  
Jia Wang ◽  
Songfang Zhao ◽  
Guoqin Hu
Keyword(s):  
Phase Transfer Catalysis ◽  
Phase Transfer

ChemInform Abstract: Methylation of Phenol and Its Derivatives with Dimethyl Sulfate Under Phase-Transfer Catalysis.

ChemInform ◽  
2010 ◽  
Vol 24 (34) ◽  
pp. no-no
Author(s):  
T. N. VASILEVSKAYA ◽  
E. P. PLOTNIKOVA ◽  
V. S. KOBRIN
Keyword(s):  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
Dimethyl Sulfate

Selective cyclization modes of methyl 3′-heteroarylamino-2′-(2,5-dichlorothiophene-3-carbonyl)acrylates. Synthesis of model (thienyl)pyrazolo- and triazolo[1,5-α]pyrimidines

2020 ◽  
Vol 75 (12) ◽  
pp. 1037-1042
Author(s):  
Nuha I. Sweidan ◽  
Mustafa M. El-Abadelah ◽  
Musa Z. Nazer ◽  
Wolfgang Voelter
Keyword(s):  
Spectral Data ◽  
The Other ◽  
Keto Group ◽  
Other Hand ◽  
Selective Displacement ◽  
New Compounds

AbstractInteraction of methyl 3-ethoxy-2-(2,5-dichloro-3-thenoyl)acrylate (I) with 3-aminopyrazole and 3-amino-1,2,4-triazole generated the respective pyrazolo[1,5-α]pyrimidine (4) and triazolo[1,5-α]pyrimidine (7). The formation of 4 entails selective and consecutive displacement of the 3-ethoxy and methoxy (ester) anions in I by 3-NH2 and 1-NH of 3-aminopyrazole. On the other hand, the formation of 7 implies selective displacement of 3-ethoxy in I by the ring-NH followed by cyclocondensation involving the keto group in I and 3-NH2 of aminotriazole. This latter selective displacement sequence is also followed by 3-amino-5-hydroxypyrazole in its reaction with I. The structures of the new compounds are supported by microanalytical and spectral data.

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