Lin, Shuangjie published the artcileVisible-light-driven spirocyclization of epoxides via dual titanocene and photoredox catalysis, HPLC of Formula: 21286-54-4, the publication is Chemical Science (2020), 11(3), 839-844, database is CAplus and MEDLINE.
The synergistic utilization of titanocene/photoredox dual catalysis driven by visible light for the radical opening/spirocyclization of easily accessible epoxyalkynes. This environmentally benign process used organic donor-acceptor fluorophore 2,4,5,6-tetra(9H-carbazol-9-yl)isophthalonitrile as a photocatalyst and Hantzsch ester as an electron donor instead of stoichiometric metallic reductants. The photocatalytic conditions showed exceptionally high reactivity for the synthesis of privileged and synthetically challenging spirocycles, e.g., I, featuring a spiro all-carbon quaternary stereocenter. Cyclic voltammetry studies suggest that Cp2TiIIICl is the catalytically active species.
Chemical Science published new progress about 21286-54-4. 21286-54-4 belongs to chlorides-buliding-blocks, auxiliary class Chiral,Chloride,Sulfonyl chlorides,Aliphatic cyclic hydrocarbon,Ketone, name is ((1S,4R)-7,7-Dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl)methanesulfonyl chloride, and the molecular formula is C10H15ClO3S, HPLC of Formula: 21286-54-4.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics