Electrooxidative Iridium-Catalyzed Regioselective Annulation of Benzoic Acids with Internal Alkynes.
Sign Up to like & getrecommendations! Published in 2021 at "Organic letters"
DOI: 10.1021/acs.orglett.0c04168
Abstract: Electrochemically driven, Cp*Ir(III)-catalyzed regioselective annulative couplings of benzoic acids with alkynes have been established herein. The combination of iridium catalyst and electricity not only circumvents the need for stoichiometric amount of chemical oxidant, but also… read more here.
Keywords: regioselective annulation; iridium catalyzed; catalyzed regioselective; benzoic acids ... See more keywords
Regioselective Annulation of Allenylphosphine Oxides with Aromatic Amides under Ruthenium(II) Catalysis.
Sign Up to like & getrecommendations! Published in 2022 at "Organic letters"
DOI: 10.1021/acs.orglett.2c01125
Abstract: Engaging allenes in transition-metal-catalyzed C-H bond activation strategy is immensely promising to access high-value scaffolds. However, such a reaction manifold remains largely elusive using cheap and sustainable ruthenium catalysis. We disclose an unprecedented ruthenium-catalyzed (4… read more here.
Keywords: aromatic amides; allenylphosphine oxides; ruthenium catalysis; regioselective annulation ... See more keywords
Synthesis of polysubstituted 3,4-dihydro-2H-thiopyrans by regioselective annulation of 3,3-disubstituted allylic alcohols with a β-oxodithioester
Sign Up to like & getrecommendations! Published in 2017 at "New Journal of Chemistry"
DOI: 10.1039/c7nj03025h
Abstract: Polyfunctionalized 3,4-dihydro-2H-thiopyrans were obtained in high yields via the regioselective annulation of 3,3-disubstituted allylic alcohols with a β-oxodithioester under BF3·Et2O catalysis. read more here.
Keywords: regioselective annulation; annulation disubstituted; dihydro thiopyrans; allylic alcohols ... See more keywords
Substituent-Controllable Cascade Regioselective Annulation of β-Enaminones with N-Sulfonyl Triazoles for Modular Access to Imidazoles and Pyrroles
Sign Up to like & getrecommendations! Published in 2023 at "Molecules"
DOI: 10.3390/molecules28114416
Abstract: A controllable synthesis of trisubstituted imidazoles and pyrroles has been developed through rhodium(II)-catalyzed regioselective annulation of N-sulfonyl-1,2,3-trizaoles with β-enaminones. The imidazole ring was formed through a 1,1-insertion of the N-H bond to α-imino rhodium carbene,… read more here.
Keywords: cascade regioselective; substituent controllable; controllable cascade; imidazoles pyrroles ... See more keywords