Synthesis of β-, γ-, and δ-Lactams via Pd(II)-Catalyzed C−H Activation Reactions
摘要:
Pd(II)-catalyzed intramolecular amination of Sp(2) and Sp(3) C-H bonds are developed using a combination of CuCl2 and AgOAc as the oxidant. The reaction protocol tolerates the presence of a double bond in the substrates. This catalytic reaction provides practical access to a wide range of beta-, gamma-, and delta-lactams.
Synthesis of β-, γ-, and δ-Lactams via Pd(II)-Catalyzed C−H Activation Reactions
作者:Masayuki Wasa、Jin-Quan Yu
DOI:10.1021/ja807129e
日期:2008.10.29
Pd(II)-catalyzed intramolecular amination of Sp(2) and Sp(3) C-H bonds are developed using a combination of CuCl2 and AgOAc as the oxidant. The reaction protocol tolerates the presence of a double bond in the substrates. This catalytic reaction provides practical access to a wide range of beta-, gamma-, and delta-lactams.
Palladium(II)-Catalyzed C(sp<sup>2</sup>)–H Bond Activation/C–N Bond Cleavage Annulation of <i>N</i>-Methoxy Amides and Arynes
The Pd(II)-catalyzedC–Hbond activation/C–Nbond cleavage annulation reaction of N-alkyoxyamide aryne is developed to synthesize 9,10-dihydrophenanthrenone derivatives. This reaction exhibited good functional group compatibility with yields up to 92%. Detailed mechanistic studies showed that the key to C–Nbond cleavage is the formed eight-membered palladacycle intermediate undergoing nucleophilic