Pseudonitrosites as masked nitroalkenes in the Barton-Zard pyrrole synthesis

摘要

3-Aryl-4-methylpyrrole-2-carboxylates were prepared via the Barton-Zard reaction using pseudonitrosites as a source of the corresponding nitroalkenes. The starting pseudonitrosites were, in turn, obtained via addition of N2O3 to propenylbenzenes available from the natural plant essential oils.