29638-71-9Relevant articles and documents
Monoallylation and benzylation of dicarbonyl compounds with alcohols catalysed by a cationic cobalt(iii) compound
Chandra Sau, Mohan,Mandal, Smita,Bhattacharjee, Manish
supporting information, p. 9235 - 9245 (2021/03/16)
Monoallylation and monoalkylation of diketones and β-keto esters with allylic and benzylic alcohols catalysed by [Cp*Co(CH3CN)3][SbF6]2(I) are reported. The method does not require any additive and affords regioselective products. The mechanistic investigations were done byin situ1H NMR spectroscopy as well as control experiments. It has been shown that reactions proceedviaη3-allyl complex formation or ally ether intermediate. The alkylation takes placeviaonly ether intermediate. The resulting allylated and alkylated products have been used for the synthesis of eleven new trisubstituted pyrazoles and one pyrazolone.
Iridium/ N-Heterocyclic Carbene Complex-Catalyzed Intermolecular Allylic Alkylation Reaction
Bao, Can-Can,Zheng, Dong-Song,Zhang, Xiao,You, Shu-Li
, p. 4763 - 4772 (2019/01/04)
N-Heterocyclic carbenes (NHCs) were found to be suitable ligands in Ir-catalyzed intermolecular allylic alkylation reaction. In the presence of a catalyst derived from [Ir(dncot)Cl]2 (dncot = dinaphthocyclooctatetraene) and triazolium salt L7,
Highly selective palladium-benzothiazole carbene-catalyzed allylation of active methylene compounds under neutral conditions
Monopoli, Antonio,Cotugno, Pietro,Zambonin, Carlo G.,Ciminale, Francesco,Nacci, Angelo
supporting information, p. 994 - 999 (2015/08/19)
The Pd-benzothiazol-2-ylidene complex I was found to be a chemoselective catalyst for the Tsuji-Trost allylation of active methylene compounds carried out under neutral conditions and using carbonates as allylating agents. The proposed protocol consists in a simplified procedure adopting an in situ prepared catalyst from Pd2dba3 and 3-methylbenzothiazolium salt V as precursors. A comparison of the performance of benzothiazole carbene with phosphanes and an analogous imidazolium carbene ligand is also proposed.