Synthesis of benzo[f]isoindole-4,9-diones |
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| Authors: | Claessens Sven Jacobs Jan Van Aeken Sam Tehrani Kourosch Abbaspour De Kimpe Norbert |
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| Institution: | Department of Organic Chemistry, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium. |
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| Abstract: | A synthesis of benzof]isoindole-4,9-diones 1 is presented starting from the reaction of 2,3-bis(bromomethyl)-1,4-dimethoxynaphthalene 15 with primary amines affording 2,3-bis(aminomethyl)-1,4-dimethoxynaphthalenes 14, which could be converted by CAN-mediated oxidation in one step to benzof]isoindole-4,9-diones 1. An alternative synthesis of benzof]isoindole-4,9-diones 1 starts from 2,3-bis(bromomethyl)-1,4-naphthoquinone 9 via 2,3-dihydrobenzof]isoindoles 10 which spontaneously oxidize. |
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