Cross-coupling reactions between some allyl, homoallyl, and homopropargyl substrates and trialkylalanes or dialkyl- and diaryl-magnesium derivatives *
作者:G.A. Tolstikov、U.M. Dzhemilev
DOI:10.1016/0022-328x(85)87328-9
日期:1985.9
Trialkylalanes and dialkyl- and diaryl-magnesium derivatives can be cross-coupled with allyl ethers and esters, sulphides, and quaternized allylamines. The reactions proceed uncatalyzed either with mild conditions or in the presence of copper complex catalysts to result in high yields of mono- and di-olefins of various structures.
Cobalt-Catalyzed Hydrocyanation of Methylenecyclopropanes to Homoallylic Nitriles
作者:Mingdong Jiao、Xianjie Fang
DOI:10.1021/acs.orglett.2c03726
日期:2022.12.9
We describe herein a novel synthesis of various homoallylic nitriles via cobalt-catalyzed hydrocyanation of methylenecyclopropanes. Excellent selectivity, mild reaction conditions, good functional group compatibility, gram-scale reaction, and product transformations demonstrate the power of this protocol. This extraordinary selectivity can probably be attributed to the stronger aptitude of the alkyl–cobalt