Catalyst- and additive-free selective sulfonylation/cyclization of 1,6-enynes with arylazo sulfones leading to sulfonylated γ-butyrolactams
Sign Up to like & getrecommendations! Published in 2020 at "Chinese Chemical Letters"
DOI: 10.1016/j.cclet.2020.11.059
Abstract: Abstract A convenient and regioselective sulfonylation/cyclization of 1,6-enynes with arylazo sulfones has been developed to access a series of sulfonylated γ-butyrolactams. The present reaction could be efficiently conducted under catalyst- and additive-free conditions, in which… read more here.
Keywords: catalyst additive; enynes arylazo; cyclization enynes; sulfonylated butyrolactams ... See more keywords
Palladium-Catalyzed Carbo-Aminative Cyclization of 1,6-Enynes: Access to Napthyridinone Derivatives.
Sign Up to like & getrecommendations! Published in 2022 at "Organic letters"
DOI: 10.1021/acs.orglett.2c00088
Abstract: 1,6-Enynes have recently stimulated enormous attention toward paving the way to unique cascade cyclizations offering complex cyclic motifs from linear substrates. We describe herein a general approach to napthyridinones via the Pd-catalyzed annulation of 1,6-enynes… read more here.
Keywords: aminative cyclization; catalyzed carbo; palladium catalyzed; cyclization ... See more keywords
Visible-Light-Mediated Three-Component Radical Iodosulfonylative Cyclization of Enynes.
Sign Up to like & getrecommendations! Published in 2022 at "Organic letters"
DOI: 10.1021/acs.orglett.2c00655
Abstract: An efficient three-component radical iodosulfonylative cyclization of enynes is described. The visible-light irradiation of iodoform with sulfinates enables sulfonyl radical generation under catalyst- and oxidant-free conditions and triggers the radical addition, cyclization and iodination cascade… read more here.
Keywords: iodosulfonylative cyclization; cyclization enynes; radical iodosulfonylative; three component ... See more keywords
Hydroalkynylative cyclization of 1,6-enynes with terminal alkynes† †Electronic supplementary information (ESI) available: CCDC 1845186 for 3m and 1847564 for 3p. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c9sc02341k
Sign Up to like & getrecommendations! Published in 2019 at "Chemical Science"
DOI: 10.1039/c9sc02341k
Abstract: A rhodium-catalyzed highly regio- and enantioselective hydroalkynylation generating cis-hydrobenzofuranone-tethered enynes has been developed. The reaction proceeds with a dynamic kinetic head-to-head insertion and symmetry breaking Michael addition cascade. read more here.
Keywords: alkynes electronic; enynes terminal; terminal alkynes; cyclization enynes ... See more keywords
Chiral spirosiladiphosphines: ligand development and applications in Rh-catalyzed asymmetric hydrosilylation/cyclization of 1,6-enynes with enhanced reactivity
Sign Up to like & getrecommendations! Published in 2023 at "Chemical Science"
DOI: 10.1039/d2sc06349b
Abstract: Spirodiphosphines have been successfully applied in various asymmetric catalytic transformations. However, controlling the coordinating conformations by the direct displacement of the spiro atom remains elusive. Herein, we report the application of Si-centered spirodiphosphine (Si-SDP) ligands… read more here.
Keywords: chiral spirosiladiphosphines; hydrosilylation cyclization; reactivity; cyclization enynes ... See more keywords