Nishimura, Kazutoshi published the artcilePhosphenium-Cation-Mediated Formal Cycloaddition Approach to Benzophospholes, SDS of cas: 23897-16-7, the publication is Chemistry – A European Journal (2018), 24(50), 13089-13092, database is CAplus and MEDLINE.
A phosphenium-cation-mediated formal [3+2]-cycloaddition reaction of internal alkynes is reported. The reaction proceeds under metal-free conditions to give the corresponding C-P rearranged benzophospholes regioselectively, even when ortho- and para-substituted arylphosphine oxides are starting substrates. Mechanistic studies by 31P{1H} NMR anal. suggest an involvement of three-membered phosphirenium cation species and C-P rearrangement prior to a ring closure for benzophosphole skeleton formation.
Chemistry – A European Journal published new progress about 23897-16-7. 23897-16-7 belongs to catalysis-chemistry, auxiliary class Aryl phosphine ligand,Mono-phosphine Ligands, name is Dimesitylphosphine oxide, and the molecular formula is C18H23OP, SDS of cas: 23897-16-7.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia