Synthesis of Potentially Bioactive 6-Bromobenzo[f]isoindolinium Bromides by Base-Catalyzed Intramolecular [4+2]-Cycloaddition


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Abstract

Intramolecular cyclization of bromides of diethyl-, dipropyl-, and penthamethylenepropargyl[3-(4-bromophenyl)prop-2-ynyl]ammonium into 6-bromobenzo[f]isoindolinium bromides catalyzed with bases occurs with moderate self-heating. The morpholine analog even in more diluted solutions reacts with vigorous self-heating. Cyclization of dimethyl analog takes place only at heating at 80–85°C during 1 h.

About the authors

E. O. Chukhadzhian

Institute of Organic Chemistry of Scientific Technological Center of Organic and Pharmaceutical Chemistry of National Academy of Sciences of Armenia

Email: hasulik4@mail.ru
Armenia, pr. Azatutyan 26, Yerevan, 0014

H. R. Gevorgyan

Institute of Organic Chemistry of Scientific Technological Center of Organic and Pharmaceutical Chemistry of National Academy of Sciences of Armenia; National Polytechnical University of Armenia

Email: hasulik4@mail.ru
Armenia, pr. Azatutyan 26, Yerevan, 0014; Yerevan, 0009

L. V. Ayrapetyan

Institute of Organic Chemistry of Scientific Technological Center of Organic and Pharmaceutical Chemistry of National Academy of Sciences of Armenia

Email: hasulik4@mail.ru
Armenia, pr. Azatutyan 26, Yerevan, 0014

El. O. Chukhadzhian

Institute of Organic Chemistry of Scientific Technological Center of Organic and Pharmaceutical Chemistry of National Academy of Sciences of Armenia

Email: hasulik4@mail.ru
Armenia, pr. Azatutyan 26, Yerevan, 0014

K. G. Shahkhatuni

Institute of Organic Chemistry of Scientific Technological Center of Organic and Pharmaceutical Chemistry of National Academy of Sciences of Armenia

Email: hasulik4@mail.ru
Armenia, pr. Azatutyan 26, Yerevan, 0014

A. S. Mkrtchyan

Institute of Organic Chemistry of Scientific Technological Center of Organic and Pharmaceutical Chemistry of National Academy of Sciences of Armenia

Email: hasulik4@mail.ru
Armenia, pr. Azatutyan 26, Yerevan, 0014

G. A. Panosyan

Molecular Structure Research Center of Scientific Technological Center of Organic and Pharmaceutical Chemistry of National Academy of Sciences of Armenia

Author for correspondence.
Email: hasulik4@mail.ru
Armenia, Yerevan, 0014

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