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A metal-free approach to construct indole rings from vinylogous amides derived from o-alkynylanilines involving a cyclization, retro-aza-Michael reaction and amine trapping cascade is reported here. This atom-economical transformation has been… Click to show full abstract
A metal-free approach to construct indole rings from vinylogous amides derived from o-alkynylanilines involving a cyclization, retro-aza-Michael reaction and amine trapping cascade is reported here. This atom-economical transformation has been extended to synthesize benzofuran derivatives using analogous vinylogous esters derived from o-alkynylphenols. The excellent stereochemical outcome of the double bond geometry in the products makes it attractive.
Keywords:
benzofurans involving;
involving cyclative;
indoles benzofurans;
synthesis indoles;
tfoh promoted;
promoted synthesis
Journal Title: Chemical communications
Year Published: 2022
Link to full text (if available)
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Journal Title: Chemical communications
Year Published: 2022
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!