Bridgehead Bicyclo[4.4.0]boron Heterocycles: A One‐Pot Four‐Component Synthesis of Dibenzo[e,i][1,3,7,2]oxadiazaborecin‐8(7H)‐ones |
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| Authors: | Mehdi Adib Sadegh Shabanibalajadeh Ehsan Sheikhi Mehdi Rahimi‐Nasrabadi Long‐Guan Zhu |
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| Institution: | 1. +98‐21‐66495291;2. School of Chemistry, College of Science, University of Tehran, Tehran, Iran;3. Department of Chemistry, Imam Hossein University, Tehran, Iran;4. Chemistry Department, Zhejiang University, Hangzhou, P. R. China |
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| Abstract: | A one‐pot four‐component synthesis of 6‐aryl‐6H‐dibenzoe,i]1,3,7,2]oxadiazaborecin‐8(7H)‐ones is described. Heating a mixture of isatoic anhydride and a benzylamine afforded the corresponding anthranilamide derivative, which was condensed with a 2‐hydroxybenzaldehyde and an arylboronic acid under solvent‐free conditions to produce bridgehead bicyclo4.4.0]‐boron heterocycles in good to excellent yields. Single‐crystal X‐ray analysis conclusively confirms the structures of the obtained bridgehead bicyclic 6–6 heterocyclic compounds. |
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| Keywords: | Isatoic anhydride Benzylamines 2‐Hydroxybenzaldehydes Arylboronic acids Bridgehead bicyclo[4 4 0]boron heterocycles Multicomponent reactions |
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