Nickel-Catalyzed Asymmetric [2+2] Cycloaddition Reaction of Hetero-Bicyclic Alkenes with Internal Alkynes
作者:Hongyu Qin、Jingchao Chen、Kangkui Li、Zhenxiu He、Yongyun Zhou、Baomin Fan
DOI:10.1002/asia.201800492
日期:2018.9.4
Enantioselective [2+2] cycloaddition reaction of azabenzonorbornadienes and oxabenzonorbornadienes with internal alkynes has been enabled by a catalyst system comprising Ni(COD)2 and (R)‐SIPHOS‐Ph‐Mor. This transformation represents the first asymmetric [2+2] cycloaddition reaction of azabenzonorbornadienes with internal alkynes, providing a straightforward method to prepare four‐membered carbocycles
Synthesis of (<i>E</i>)-α,β-Unsaturated Ketones by Hydrostannylation-Stille Tandem Reaction of Alkylarylacetylenes with Acyl Chlorides
作者:Jianying Li、Yan Yu、Wenyan Hao、Mingzhong Cai
DOI:10.3184/030823410x12861973220846
日期:2010.10
( E)-α,β-Unsaturated ketones can be stereoselectively synthesised in one pot under mild conditions, in good yields, by the hydrostannylation of alkylaryl- acetylenes, followed by the Stille cross-coupling with acyl chlorides.