Journal
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
Volume 26, Issue 4, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.202201223
Keywords
cycloisomerization; gold catalysis; pyrrole; umpolung; ynamide
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A novel ynamide scaffold was designed, synthesized, and applied to a gold-catalyzed and para-toluenesulfonic acid (PTSA)-assisted cascade cycloisomerization reaction for the synthesis of beta-pyrrole substituted alpha,beta-unsaturated ketones. The reaction exhibited stereoselectivity, with the E-isomer as the major product in low to moderate yield.
Substituted pyrroles are prevalent aromatic ring systems encountered in numerous natural products and bioactive molecules. Herein, a novel ynamide scaffold has been designed, synthesized and subsequently applied to an unprecedented gold-catalyzed and para-toluenesulfonic acid (PTSA)-assisted cascade cycloisomerization reaction for the synthesis of beta-pyrrole substituted alpha,beta-unsaturated ketones. Notably, the reaction is stereoselective, offering E-isomer as major product with low to moderate yield.
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