Sequential chlorination—reduction as an efficient and selective access to 5-chlorine-substituted pyrrolesстатья
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Дата последнего поиска статьи во внешних источниках: 23 января 2026 г.
Аннотация:The selective monochlorination of 2,3,4-trisubstituted pyrroles was performed by a two-step one-pot method. It involves the oxidative chlorination of pyrrole substrates with trichloroisocyanuric acid giving dichlorinated non-aromatic intermediates followed by their reduction with tin(ii) chloride or sodium dithionite to afford the target products in yields of up to 100%.