An Efficient Synthesis of ( 1‐Methyl )‐2‐phenyl‐4‐quinolones from ( N ‐Methyl )isatoic Anhydride

An Efficient Synthesis of 2-Substituted Quinazolin-4(3H)-ones by Using Recyclable Wang Resin Supported Sulfonic Acid Catalyst

Letters in Organic Chemistry ◽

10.2174/1570178617999201109203731 ◽

2020 ◽

Vol 17 ◽

Author(s):

Kalyani K. ◽

Srinivasa Reddy Kallam

Keyword(s):

Sulfonic Acid ◽

Functional Group ◽

Acid Catalyst ◽

Sulphonic Acid ◽

Isatoic Anhydride ◽

Efficient Synthesis ◽

Wang Resin ◽

Polymer Supported ◽

High Yields

Abstract:: An efficient synthesis of 2-substituted Quinazolin-4(3H)-ones has been developed from isatoic anhydride with various amidoximes by using recyclable polymer supported sulphonic acid catalyst. Excellent functional group compatibil-ity and high yields are the important features of this protocol.

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Zr(HSO4)4: An Efficient Catalyst for the Synthesis of 3-(2'- Benzothiazolyl)-2,3-dihydroquinazolin- 4(1H)-ones

E-Journal of Chemistry ◽

10.1155/2012/515029 ◽

2012 ◽

Vol 9 (2) ◽

pp. 739-743 ◽

Cited By ~ 1

Author(s):

Liqiang Wu

Keyword(s):

Solvent Free ◽

Isatoic Anhydride ◽

Efficient Synthesis ◽

One Pot ◽

Efficient Catalyst ◽

Solvent Free Conditions ◽

One Pot Condensation ◽

The One

A simple and efficient synthesis of 3-(2'-benzothiazolyl)-2,3-dihydro quinazolin-4(1H)- ones has been accomplished by the one-pot condensation of isatoic anhydride, aldehyde and 2-aminobenzothiazole under solvent-free conditions in the presence of Zr(HSO4)4.

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ChemInform Abstract: The Chemistry of 2H-3,1-Benzoxazine-2,4(1H)-dione (Isatoic Anhydride). Part 22. An Efficient Synthesis of Leiokinine B.

ChemInform ◽

10.1002/chin.199320275 ◽

2010 ◽

Vol 24 (20) ◽

pp. no-no

Author(s):

G. M. COPPOLA

Keyword(s):

Isatoic Anhydride ◽

Efficient Synthesis

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ChemInform Abstract: Reaction of Isatoic Anhydride, Amide, and N,N′-Dialkyl Carbodiimides under Solvent-Free Conditions: New and Efficient Synthesis of 3-Alkyl-2-(alkylamino)quinazolin-4(3H)-ones.

ChemInform ◽

10.1002/chin.201343172 ◽

2013 ◽

Vol 44 (43) ◽

pp. no-no

Author(s):

Mehdi Asadi ◽

Mostafa Ebrahimi ◽

Mohammad Mahdavi ◽

Mina Saeedi ◽

Parviz Rashidi Ranjbar ◽

...

Keyword(s):

Solvent Free ◽

Isatoic Anhydride ◽

Efficient Synthesis ◽

Solvent Free Conditions

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Reaction of Isatoic Anhydride, Amine, and N,N′-Dialkyl Carbodiimides Under Solvent-Free Conditions: New and Efficient Synthesis of 3-Alkyl-2-(alkylamino)quinazolin-4(3H)-ones

Synthetic Communications ◽

10.1080/00397911.2012.714042 ◽

2013 ◽

Vol 43 (17) ◽

pp. 2385-2392 ◽

Cited By ~ 21

Author(s):

Mehdi Asadi ◽

Mostafa Ebrahimi ◽

Mohammad Mahdavi ◽

Mina Saeedi ◽

Parviz Rashidi Ranjbar ◽

...

Keyword(s):

Solvent Free ◽

Isatoic Anhydride ◽

Efficient Synthesis ◽

Solvent Free Conditions

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3,5-Bis(trifluoromethyl) Phenylammonium triflate(BFPAT) as a Novel Organocatalyst for the Efficient Synthesis of 2,3-dihydroquinazolin-4(1H)-one Derivatives

Current Organic Synthesis ◽

10.2174/1570179417666191218115126 ◽

2020 ◽

Vol 17 (1) ◽

pp. 40-45

Author(s):

Mandana Alipour ◽

Zinatossadat Hossaini ◽

Samad Khaksar ◽

Faramarz Rostami-Charati

Keyword(s):

Ammonium Acetate ◽

Isatoic Anhydride ◽

Efficient Synthesis ◽

Melting Points ◽

One Pot ◽

Excellent Yield ◽

One Pot Synthesis ◽

New Process

Aim and Objective: A one-pot synthesis of 2,3-dihydroquinazolin-4(1H)-one derivatives by threecomponent cyclo-condensation of isatoic anhydride, aldehydes and amine or ammonium acetate has been developed using 3,5-Bis(trifluoromethyl) phenylammonium triflate (BFPAT) as a new organocatalyst. Material and method: All of the obtained products are known compounds and identified by IR, 1HNMR, 13CNMR and melting points. Results: A wide variety of structurally different aldehydes reacted easily and rapidly to result in the relating 2,3-dihydroquinazolin-4(1H)-ones in good to excellent yield. Conclusion: We have demonstrated an extremely effective and new process for synthesizing 2,3- dihydroquinazolin-4(1H)-ones employing BFPAT as a novel organocatalyst in one-pot fashion.

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