Zhao, Kuo published the artcileCatalytic Ring Expansions of Cyclic Alcohols Enabled by Proton-Coupled Electron Transfer, Safety of 2,4,6-Triisopropylbenzenethiol, the publication is Journal of the American Chemical Society (2019), 141(22), 8752-8757, database is CAplus and MEDLINE.
In the presence of an iridium photocatalyst and tetraphenylphosphonium trifluoroacetate or di-Ph phosphate or collidine, alkenyl-substituted cyclic and heterocyclic alcs. such as I (R = H, Ph, 4-t-BuC6H4, 4-MeO2CC6H4) underwent regioselective photochem. one- and two-carbon ring expansion reactions under blue LED irradiation via proton-coupled electron transfer to yield cyclic ketones such as II and III (R = Ph, 4-t-BuC6H4, 4-MeO2CC6H4). When an aryl substituent was present at the terminal position of the alkenyl moiety, one-carbon ring expansion was observed, while when an alkyl substituent or a proton was present, two-carbon ring expansion occurred exclusively.
Journal of the American Chemical Society published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C22H18O2, Safety of 2,4,6-Triisopropylbenzenethiol.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia