590418-07-8Relevant academic research and scientific papers
Two-Component Assembly of Thiochroman-4-ones and Tetrahydrothiopyran-4-ones Using a Rhodium-Catalyzed Alkyne Hydroacylation/Thio-Conjugate-Addition Sequence
Bouisseau, Ana?s,Glancy, John,Willis, Michael C.
supporting information, p. 5676 - 5679 (2016/11/17)
β′-Thio-substituted-enones, assembled from the combination of β-tert-butylthio-substituted aldehydes and alkynes, using rhodium catalysis, are shown to smoothly undergo in situ intramolecular S-conjugate addition to deliver a range of S-heterocycles in a one-pot process. Aryl, alkenyl, and alkyl aldehydes can all be employed, to provide thiochroman-4-ones, hexahydro-4H-thiochromen-4-ones, and tetrahydrothiopyran-4-ones, respectively. A variety of in situ oxidations are also performed, allowing access to S,S-dioxide derivatives, as well as unsaturated variants.
Intramolecular cross-coupling of gem-dibromoolefins: A mild approach to 2-bromo benzofused heterocycles
Newman, Stephen G.,Aureggi, Valentina,Bryan, Christopher S.,Lautens, Mark
supporting information; experimental part, p. 5236 - 5238 (2010/01/31)
Highly useful halogenated benzofurans and benzothiophenes are prepared from readily available gem-dibromoolefins using a mild, ligand-free copper catalyzed cross-coupling procedure.
