Reactions of alkyl 4-hydroxybut-2-ynoates with arenes under superelectrophilic activation with triflic acid or HUSY zeolite: Alternative propargylation or allenylation of arenes, and synthesis of furan-2-ones
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DOI: 10.1016/j.tet.2019.130517
Abstract: Abstract Reactions of alkyl 4-aryl(or 4,4-diaryl)-4-hydroxybut-2-ynoates [Ar(H or Ar')(OH)C4–C3≡C2–CO2Alk] with arenes under the action of triflic acid TfOH or HUSY zeolite result in the formation of two main compounds, aryl substituted furan-2-ones or products of… read more here.
Keywords: triflic acid; husy zeolite; furan ones; hydroxybut ynoates ... See more keywords
Sonogashira reactions of alkyl halides catalyzed by NHC [CNN] pincer nickel(II) complexes
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DOI: 10.1039/c8nj02138d
Abstract: C(carbene)N(amido)N(amine)-pincer nickel(II) complexes [iPrCNN-Ni-Br] (6), [nBuCNN-Ni-Br] (7) and [BnCNN-Ni-Cl] (8) were synthesized. The catalytic performance of complexes 6–8 for Sonogashira cross-coupling reactions was explored. In a combination of 5 mol% catalyst loading of 6 and… read more here.
Keywords: pincer; reactions alkyl; pincer nickel; cnn pincer ... See more keywords