Transposition of an acrylate moiety in TMSOTf-mediated reaction of alkynyl vinylogous carbonates gives heterocyclic dienes.
Sign Up to like & getrecommendations! Published in 2022 at "Chemical communications"
DOI: 10.1039/d2cc03802a
Abstract: TMSOTf-mediated reaction of alkynyl vinylogous carbonates serendipitously gave 1,4-oxazepine and dihydropyran dienes via transposition of an ethyl acrylate moiety involving intramolecular cascade Prins-type cyclization/retro-oxa-Michael reaction/cycloisomerisation. The developed atom-economical protocol selectively provides an E double bond… read more here.
Keywords: reaction; mediated reaction; alkynyl vinylogous; reaction alkynyl ... See more keywords
Silver(I)-mediated Reaction of 2-Isocyanobiaryl with Alkyl Trifluoroborates: Efficient Synthesis of 6-Alkylated Phenanthridines
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DOI: 10.1246/cl.180009
Abstract: A silver-mediated free-radical cascade cyclization of isocyanides with potassium alkyl trifluoroborates was developed. The procedure tolerates a series of functional groups, including chloro, bromo, ester, ketone, and amide. Additionally, it is not sensitive to steric… read more here.
Keywords: reaction isocyanobiaryl; alkyl trifluoroborates; silver mediated; mediated reaction ... See more keywords