Saiegh, Tomas J. published the artcileRhodium(III)-Catalyzed Heteroannulations of 3-Sulfolene Derivatives through C(sp2)-H Activation: Access to Pyridine ortho-Quinodimethane Precursors, Application of O-Pivaloylhydroxylamine trifluoromethanesulfonate, the publication is European Journal of Organic Chemistry (2022), 2022(22), e202200509, database is CAplus.
Hydroxamates derived from 3-sulfolene-3-carboxylic acid can be involved in intra- and intermol. rhodium(III)-catalyzed heteroannulations with alkynes proceeding through C(sp2)-H bond activation. These transformations allow for a straightforward access to diversely substituted pyridones, and to pyridines fused to a sulfolene ring after functional group transformations. Subsequent cheletropic elimination of sulfur dioxide can be achieved under microwave irradiation to generate pyridine ortho-quinodimethanes. These results demonstrate that the scope of rhodium(III)-catalyzed C(sp2)-H functionalizations can be extended to sulfolenes, a yet unexplored class of alkenes in these latter transformations, thereby affording access to valuable classes of heterocyclic products.
European Journal of Organic Chemistry published new progress about 1293990-73-4. 1293990-73-4 belongs to catalysis-chemistry, auxiliary class Aliphatic Chain, name is O-Pivaloylhydroxylamine trifluoromethanesulfonate, and the molecular formula is C6H12F3NO5S, Application of O-Pivaloylhydroxylamine trifluoromethanesulfonate.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia