2-Formyl-3-iodo-1 -tosylpyrrole 2 has been prepared in four steps from cinnamaldehyde. It was coupled with a wide variety of arylboronic acids to give the corresponding biaryl compounds in high yields. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.
Franc, C., Denonne, F., Cuisinier, C., & Ghosez, L. (1999). A general synthesis of 2-formyl-3-arylpyrroles. Tetrahedron Letters, 40(24), 4555-4558. https://doi.org/10.1016/S0040-4039(99)00808-4 (Original work published 1999)