The (3+2)- and formal (3+3)-cycloadditions of N-vinylpyrroles with cyclic nitrones and C,N-cyclic azomethine imines
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DOI: 10.1016/j.tet.2018.07.040
Abstract: Abstract The addition of Lewis acids changes the path of the reaction of N-vinylpyrroles with 3,4-dihydroisoquinoline-N-oxides: formal (3 + 3)-cycloaddition proceeds instead of (3 + 2)-cycloaddition. In the case of benzoyl(3,4-dihydroisoquinolin-2-ium-2-yl)amides, reaction path does not change in the same… read more here.
Keywords: cyclic azomethine; cyclic nitrones; nitrones cyclic; vinylpyrroles cyclic ... See more keywords
Allenes and Derivatives in Gold(I)- and Platinum(II)-Catalyzed Formal Cycloadditions
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DOI: 10.1021/acs.accounts.8b00567
Abstract: Conspectus Cycloaddition reactions, by involving the formation of at least two bonds and one cycle in a single operation, represent one of the more practical ways to assemble carbo- and heterocyclic structures from simple acyclic… read more here.
Keywords: platinum; catalyzed formal; formal cycloadditions; gold ... See more keywords
Fischer's base-triggered formal (3+2) cycloadditions with 3-isothiocyanato oxindoles as acceptor-donor synthons.
Sign Up to like & getrecommendations! Published in 2023 at "Chemical communications"
DOI: 10.1039/d3cc00376k
Abstract: Herein, previously unreported Fischer's base reactants serving as useful 2C building blocks in (3+2) cycloaddition reactions to build a library of bispiro[Fischer's base-oxindole] hybrids are described. These structurally intriguing products containing three adjacent quaternary stereocentres… read more here.
Keywords: fischer base; acceptor donor; base triggered; isothiocyanato oxindoles ... See more keywords