Hu, Zhiyong published the artcileRhodium(III)-Catalyzed Cascade Cyclization/Electrophilic Amidation for the Synthesis of 3-Amidoindoles and 3-Amidofurans, Formula: C6H12F3NO5S, the publication is Organic Letters (2016), 18(9), 2058-2061, database is CAplus and MEDLINE.
A rhodium(III)-catalyzed cascade cyclization/electrophilic amidation of N-tosyl-2-alkynylanilines and 2-alkynylphenols I [R = H, 4-Cl, 4-F, 4-O2N, 4-F3C, 4-EtO2C, 4-Me, 5-Me (locants with respect to aniline or phenol functional group); R1 = Bu, TBDMSOCH2, Ph, 4-MeC6H4, 4-MeOC6H4, 4-FC6H4, 4-BrC6H4; X = TsN, O; TBDMS = tert-butyldimethylsilyl] with N-pivaloyloxylamides R2CONHOCOt-Bu [R2 = PhCH2, 4-MeC6H4CH2, 3-ClC6H4CH2, 3-BrC6H4CH2, 2-IC6H4CH2, ClCH2, H2C:CH, Me2C:CH, (E)-PhCH:CH] as the electrophilic nitrogen source to yield 3-amidoindoles and 3-amidofurans II [R = H, 4-Cl, 4-F, 4-O2N, 4-F3C, 4-EtO2C, 4-Me, 5-Me; R1 = Bu, TBDMSOCH2, Ph, 4-MeC6H4, 4-MeOC6H4, 4-FC6H4, 4-BrC6H4; R2 = PhCH2, 4-MeC6H4CH2, 3-ClC6H4CH2, 3-BrC6H4CH2, 2-IC6H4CH2, ClCH2, H2C:CH, Me2C:CH, (E)-PhCH:CH; X = TsN, O] under mild conditions with good functional group tolerance has been developed. The synthetic utility of this reaction has been demonstrated through the derivatization of selected 3-amidoindoles to several heterocycle-fused indoles. The structure of II (R = H; R1 = 4-BrC6H4; R2 = PhCH2) was determined by X-ray crystallog.
Organic Letters 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, Formula: C6H12F3NO5S.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia