Unsymmetrically-substituted 2,5-diarylpyrroles were prepared by 5-endo-dig cyclization with consecutive deprotection of homopropargyl sulfonamides. Stepwise elaboration of an aldehyde allows the introduction of a variety of functional aryl moieties at the pyrrole ring.
W. Van Rossom, Y. Matsushita, K. Ariga and J. P. Hill, RSC Adv., 2014, 4, 4897 DOI: 10.1039/C3RA46579A
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