C-Alkynylation of Chromones by Sonogashira Reaction
作者:Tamás Patonay、István Pazurik、Anita Ábrahám
DOI:10.1071/ch13006
日期:——
Sonogashira reaction of bromochromones and -flavones with a bromine atom on their benzene or heterocyclic ring with various terminal alkynes gave the desired products with nearly the same efficiency as the previously used iodine derivatives. The coupling reactions were performed in the presence of [tetrakis(triphenylphosphine)palladium(0)], copper(i) co-catalyst, and triethylamine, resulting in the
Facile Access to Diverse Libraries of Internal Alkynes via Sequential Iododediazoniation/Decarboxylative Sonogashira Reaction in Imidazolium ILs without Ligand or Additive
作者:Pavankumar Prabhala、Hemantkumar M. Savanur、Rajesh G. Kalkhambkar、Kenneth K. Laali
DOI:10.1002/ejoc.201900093
日期:2019.3.14
A facile one‐pot method comprising sequentialiododediazoniation/Sonogashirareaction is used to prepare diverselibraries of internalalkynes. The method uses imidazolium‐ILs as base and solvent and does not require ligand or additive.