Abstract
AbstractA Rh(III)‐catalyzed annulation reaction of 2‐(2‐nitrovinyl)phenols and disubstituted alkynes is developed to complete the first synthesis of biologically important 4‐nitro substituted benzo[b]oxepines. The same reaction conditions are also applied for the efficient synthesis of 4‐cyano substituted benzo[b]oxepines which have high biological significance. Some of the synthesized 4‐nitrobenzo[b]oxepines are easily transformed to triazole fused dibenzo[b]oxepines.
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