Nickel-Catalyzed Oxidative Coupling of Unactivated C(sp<sup>3</sup>)–H Bonds in Aliphatic Amides with Terminal Alkynes
作者:Fei-Xian Luo、Zhi-Chao Cao、Hong-Wei Zhao、Ding Wang、Yun-Fei Zhang、Xing Xu、Zhang-Jie Shi
DOI:10.1021/acs.organomet.6b00529
日期:2017.1.9
In this work, we demonstrated Ni-catalyzed oxidative coupling of unactivated C(sp(3))-H bonds with terminal alkynes for construction of C(sp(3))-C(sp) bonds to synthesize alkyl-substituted internal alkynes. Different amides exhibited good compatibility. Preliminary mechanistic studies were conducted to account for this alkynylation.
Nickel-Catalyzed Addition-Type Alkenylation of Unactivated, Aliphatic C–H Bonds with Alkynes: A Concise Route to Polysubstituted γ-Butyrolactones
作者:Mingliang Li、Yudong Yang、Danni Zhou、Danyang Wan、Jingsong You
DOI:10.1021/acs.orglett.5b01128
日期:2015.5.15
Through the nickel-catalyzed chelation-assisted C-H bond activation strategy, the addition-type -allcenylation of unreactive beta-C(sp(3))-H bonds of aliphatic amides with internal alkynes is developed for the first time to produce gamma/delta-unsaturated carboxylic amide derivatives. The resulting alkenylated products can further be transformed into polysubstituted gamma-butyrolactones with pyridinium chlorochromate (PCC).