Copper-Catalyzed Intermolecular Amidation and Imidation of Unactivated Alkanes
作者:Ba L. Tran、Bijie Li、Matthias Driess、John F. Hartwig
DOI:10.1021/ja411912p
日期:2014.2.12
evidenced by the catalytic reaction of cyclohexane with benzamide in the presence of CBr4, which formed exclusively bromocyclohexane. Furthermore, stoichiometric reactions of [(phen)Cu(phth)2] with tBuOOtBu and (Ph(Me)2CO)2 at 100 °C without cyclohexane afforded N-methylphthalimide (Me-phth) from β-Me scission of the alkoxyradicals to form a methylradical. Separate reactions of cyclohexane and d12-cyclohexane
Stereoretentive Copper(II)-Catalyzed Ritter Reactions of Secondary Cycloalkanols
作者:Mohammed H. Al-huniti、Salvatore D. Lepore
DOI:10.1002/adsc.201300233
日期:2013.10.11
A Ritter-like coupling reaction of cyclic alcohols and both aryl and alkyl nitriles to form amides catalyzed by copper (II) triflate is described. These reactions proceed in good yields under mild and often solvent-free conditions. With 2- and 3-substituted cycloalkanols, amide products are formed with near complete retention of configuration. This is likely due to fast nucleophilic capture of a non-planar