Reaction of Huisgen zwitterion with 1,2-benzoquinones and isatins: expeditious synthesis of dihydro-1,2,3-benzoxadiazoles and spirooxadiazolines |
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| Authors: | Nair Vijay Biju A T Vinod A U Suresh Eringathodi |
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| Affiliation: | Organic Chemistry Section, Chemical Sciences Division, Regional Research Laboratory (CSIR), Trivandrum 695 019, India. vijaynair_2001@yahoo.com |
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| Abstract: | [reaction: see text] The zwitterionic intermediate generated from dialkyl azodicarboxylate and triphenylphosphine on reaction with 3-methoxy-1,2-benzoquinones afforded dihydro-1,2,3-benzoxadiazoles. N-Substituted isatins furnished spirooxadiazolines under similar conditions. |
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