Synfacts, Table of Contents Synfacts 2022; 18(09): 0956DOI: 10.1055/s-0042-1752925 Synthesis of Heterocycles Preparing Sulfonates by a Clauson–Kaas-Type Formation of Sulfonyl Pyrroles from Sulfonamides Authors Contributor(s): Paul Richardson Tim Kwok (Pfizer) Recommend Article Abstract Buy Article(opens in new window)Key words Key wordsPaal–Knorr synthesis - Clauson–Kaas synthesis - sulfonyl pyrroles - sulfonates - sulfonamides - late-stage modification Full Text