The Role of the Alcohol and Carboxylic Acid in Directed Ruthenium-Catalyzed C(sp3)H α-Alkylation of Cyclic Amines
作者:Sheba D. Bergman、Thomas E. Storr、Hana Prokopcová、Karel Aelvoet、Gaston Diels、Lieven Meerpoel、Bert U. W. Maes
DOI:10.1002/chem.201201072
日期:2012.8.13
A general directed Ru‐catalyzedC(sp3)Hα‐alkylation protocol for piperidines (less‐reactive substrates than the corresponding five‐membered cyclicamines) has been developed. The use of a hindered alcohol (2,4‐dimethyl‐3‐pentanol) as the solvent and catalyst activator, and a catalytic amount of trans‐1,2‐cyclohexanedicarboxylic acid is necessary to achieve a high conversion to product. This protocol