Observations on the intramolecular Heck reactions of aromatic chlorides using palladium/imidazolium salts
作者:Stephen Caddick、William Kofie
DOI:10.1016/s0040-4039(02)02340-7
日期:2002.12
The intramolecular Heck reaction of aromatic amines and ethers using palladium/imidazoliumsalts is described. The use of tetra-n-butylammonium halide salts facilitates the reactivity of aromatic chlorides. An unexpected and novel palladium-mediated cyclisation is also described leading to the formation of a tricyclic adduct.
Gold(I)-Catalyzed Intermolecular Hydroamination of Allenes with Arylamines
作者:Ross Widenhoefer、Alethea Duncan
DOI:10.1055/s-0029-1218555
日期:2010.2
A mixture of (3)AuCl [3 = P(t-Bu)(2)o-biphenyl] and AgOTf catalyzes the intermolecularhydroamination of monosubstituted and 1,1- and 1,3-disubstituted allenes with primary and secondary arylamines.
Palladium-catalyzedreactions of various haloanilines with 1,1-dimethylallyl alcohol were carried out in the presence of a hydrophilic ligand, 3,3′,3′′-phosphinidyne tris(benzenesulfonic acid) trisodium salt (TPPTS), or a lipophilic phosphine ligand, 1,1′-bis(diphenylphosphino)ferrocene (DPPF). The reactions proceeded chemoselectively in aqueous solvent to give C-vinylated products under basic conditions