Zhou, Mingwei published the artcileZinc triflate-mediated cyclopropanation of oxindoles with vinyl diphenyl sulfonium triflate: a mild reaction with broad functional group compatibility, Recommanded Product: 5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)indolin-2-one, the publication is RSC Advances (2017), 7(7), 3741-3745, database is CAplus.
The first use of zinc triflate for the cyclopropanation of unprotected oxindoles with vinyl di-Ph sulfonium triflate salt to afford spiro[cyclopropane-1,3′-indoline]-2′-ones I [R = 5-OH, 6-F, 7-Cl, 4-Br, etc.] was reported. The reaction proceeded under ambient conditions and consistently provided high yields with broad functional group tolerability. The utility for the late-stage functionalization (LSF) of complex mols. was demonstrated.
RSC Advances published new progress about 837392-64-0. 837392-64-0 belongs to indole-building-block, auxiliary class Indoline,Boronic acid and ester,Amide,Boronate Esters, name is 5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)indolin-2-one, and the molecular formula is C15H14Cl2S2, Recommanded Product: 5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)indolin-2-one.
Referemce:
https://www.nature.com/articles/s41429-020-0333-2,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles