An efficient synthesis of 2-benzoxepines from Morita-Baylis-Hillman adducts using heterogeneous recyclable catalysts |
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| Authors: | Das Biswanath Majhi Anjoy Banerjee Joydeep Chowdhury Nikhil Holla Harish Harakishore Kankipati Murty Upadhayula Suryanarayana |
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| Affiliation: | Organic Chemistry Division I, Indian Institute of Chemical Technology, Hyderabad, India. biswanathdas@yahoo.com |
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| Abstract: | 2-Benzoxepines have efficiently been synthesized from Morita-Baylis-Hillman adducts, alkyl 3-aryl-3-hydroxy-2-methylenepropanoates by treatment with HCHO catalyzed by silica supported perchloric acid (HClO4.SiO2) or Amberlyst-15 in CH2Cl2 under reflux for a short period of time (1.5-2.5 h). The catalyst can be recovered and recycled. The antibacterial properties of the new 2-benzoxepines were studied but no activity was found. |
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