On the catalytic duo PdCl2(PPh3)2/AuCl(PPh3) that cannot effect a Sonogashira-type reaction: a correction

Cross-coupling reactions of gold(I) alkynyl and polyyndiyl complexes

“…Similar results have been obtained from mixed Pd/Au catalysed cross-coupling reactions of aryl halides [46,47] and arene diazonium salts [48] with terminal alkynes in amine or amine containing solvent mixtures, at temperatures ranging from ambient to the reflux point of the solvent. In each case, no effective coupling was observed in the absence of palladium, and the reactions can be considered as analogues of the conventional Pd/Cu co-catalysed Sonogashira reaction, with the gold reagent taking the place of the Cu(I) salts more commonly employed.…”

Palladium‐Catalyzed [3+2] Cycloaddition Reaction of (Diarylmethylene)cyclopropa[b]naphthalenes with Arynes: An Efficient Synthesis of 11‐(Diarylmethylene)‐11H‐benzo[b]fluorenes

“…Our further experiments have applied the HBF 4 salt of a monophosphane ligand, that is, dicyclohexyl-(2,4,6-trimethoxyphenyl)phosphane, to the Suzuki coupling reaction of 3g and 3h with different organoboronic acids in high yields. [22] The reaction of 3h with hex-1-yne afforded 4e in 86 % yield by using an efficient catalytic system of PdCl 2 (PPh 3 ) 2 and CuI in piperidine [23] (Scheme 2). [22] The reaction of 3h with hex-1-yne afforded 4e in 86 % yield by using an efficient catalytic system of PdCl 2 (PPh 3 ) 2 and CuI in piperidine [23] (Scheme 2).…”

Bimetallic Catalysis using Transition and Group 11 Metals: An Emerging Tool for CC Coupling and Other Reactions

“…[67] It is possible that partial oxidation of the phosphane in the second case might explain the discrepancy.…”