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Gaina L, Porumb D, Silaghi-Dumitrescu I, Cristea C, Silaghi-Dumitrescu L. On the microwave-assisted synthesis of acylphenothiazine derivatives — Experiment versus theory synergism. CAN J CHEM 2010. [DOI: 10.1139/v09-163] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The microwave-assisted synthesis of a series of acylphenothiazine derivatives is described. 10H-Phenothiazine-3-carbaldehyde derivatives were obtained in moderate yields by the Duff formylation reaction, and 10-acetyl-phenothiazine derivatives were obtained in excellent yields by acetylating phenothiazine derivatives with acetic anhydride. A theoretical explanation for the chemoselectivity and regioselectivity of these acylation reactions applied to phenothiazine substrates was attempted by molecular-modeling analyses based on molecular mechanics, and semi-empirical and DFT calculations.
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Affiliation(s)
- Luiza Gaina
- Babeş-Bolyai University, Faculty of Chemistry and Chemical Engineering, 11, Arany Janos Street, 400028 Cluj-Napoca, Romania
| | - Dan Porumb
- Babeş-Bolyai University, Faculty of Chemistry and Chemical Engineering, 11, Arany Janos Street, 400028 Cluj-Napoca, Romania
| | - Ioan Silaghi-Dumitrescu
- Babeş-Bolyai University, Faculty of Chemistry and Chemical Engineering, 11, Arany Janos Street, 400028 Cluj-Napoca, Romania
| | - Castelia Cristea
- Babeş-Bolyai University, Faculty of Chemistry and Chemical Engineering, 11, Arany Janos Street, 400028 Cluj-Napoca, Romania
| | - Luminita Silaghi-Dumitrescu
- Babeş-Bolyai University, Faculty of Chemistry and Chemical Engineering, 11, Arany Janos Street, 400028 Cluj-Napoca, Romania
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Tropones, Tropolones, and Tropylium Salts with Fused Heterocyclic Rings Part I: Synthesis**Respectfully dedicated to the Nestor of seven-membered-ring chemistry, Professor Tetsuo Nozoe. ADVANCES IN HETEROCYCLIC CHEMISTRY 1995. [DOI: 10.1016/s0065-2725(08)60171-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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Kurihara T, Shindo K, Ishikawa S, Nozoe T. Benzo[b]cyclohepta[e][1,4]thiazines and Their Diazine Analogues. III. π-Electronic Structures of 5H,11H+-Cyclohepta[b]quinoxalinium Ions and Their O- and S-Analogues. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1991. [DOI: 10.1246/bcsj.64.2668] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Kurihara T, Ishikawa S, Nozoe T, Aihara JI. Stability and Resonance Energy of Troponoid Compounds. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1990. [DOI: 10.1246/bcsj.63.2531] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Shindo K, Ishikawa S, Nozoe T. Cyclohepta[b][1,4]benzothiazines and Their Diazine Analogues. 2. Formation and Properties of Cyclohepta[b]quinoxalines. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1989. [DOI: 10.1246/bcsj.62.1158] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Nozoe T, Shindo K, Ishikawa S. Novel Intermolecular Heterocycle Exchange Reaction of Cyclohepta[b][1,4]benzoxazines and TheirS-Analogs with 1,2-Bifunctional Reagents. CHEM LETT 1988. [DOI: 10.1246/cl.1988.1593] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Yamashita Y, Hagiya K, Saito G, Mukai T. Conductive Salts of Tropylium Ions with Tetracyanoquinodimethan Anion Radical (TCNQ\ewdot) and Bisthiadiazolotetracyanoquinodimethan Anion Radical (BTDA–TCNQ\ewdot). BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1988. [DOI: 10.1246/bcsj.61.271] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Yamashita Y, Hagiya K, Saito G, Mukai T. NOVEL TETRACYANOQUINODIMETHAN ANION RADICAL SALTS OF HETEROCYCLIC CATIONS CONTAINING A TROPYLIUM ION SKELETON. CHEM LETT 1986. [DOI: 10.1246/cl.1986.537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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