Organotellurium Chemistry: Remarkably Facile Preparation of Benzo‐1,3‐tellurazoles |
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| Authors: | Nathan C. McMullen Frank R. Fronczek Thomas Junk |
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| Affiliation: | 1. Department of Chemistry, University of Louisiana at Monroe, , Monroe, Louisiana, 71209;2. Department of Chemistry, Louisiana State University, , Baton Rouge, Louisiana, 70803;3. Department of Chemistry, University of Louisiana at Lafayette, , Lafayette, Louisiana, 70504 |
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| Abstract: | Benzo‐1,3‐tellurazoles carrying alkyl or aryl substituents in position 2 were prepared in a facile two‐step sequence, starting with readily available 2‐haloanilines. This approach relies on the preparation of bis(2‐aminophenyl) ditellurides by nucleophilic halide displacement from 2‐haloanilines with sodium telluride in N‐methylpyrrolidone. Subsequent reductive cyclization with carboxylic acid halides or carboxylic anhydrides furnished benzo‐1,3‐tellurazoles in good yields. |
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