vinyl dichlorides and electron deficient amides as the starting material is described. In the absence of transition-metal catalyst, the reaction proceeds under mild reaction conditions in open air and thus rendering a convenient operation. This strategy is not only suitable for both terminal and internal ynamide synthesis but also amenable for large-scale preparation. Broad substrate scopes with respect
A convenient and straightforward strategy for the synthesis of 2,3-disubstituted and 2,3,5-trisubstituted furans via a base-promoted domino reaction of β-keto compounds with vinyl dichlorides is described. This transition-metal-free approach proceeds under operationally simple reaction conditions featuring easily available starting materials, a broad substrate scope, and good functional group tolerance
Pd(OAc)<sub>2</sub>/SPPh<sub>3</sub> accelerated activation of gem-dichloroalkenes for the construction of 3-arylchromones
作者:Jianming Liu、Weiwei Song、Yuanyuan Yue、Ren Liu、Hong Yi、Kelei Zhuo、Aiwen Lei
DOI:10.1039/c5cc06334e
日期:——
The Pd-catalyzed regioselective intramolecular nucleophilic substitution of gem-dichloroalkene derivatives with salicylaldehydes leading to the synthesis of 3-arylchromones has been developed.
通过Pd催化的选择性内分子亲核取代,gem-二氯烯衍生物与水杨醛反应,合成了3-芳基香豆素。
Access to (<i>Z</i>)-1,2-Endiamides and 1,1-Endiamides via a Base-Promoted Tandem Reaction
An efficient base-promoted tandem reaction between vinyl 1,1-dichlorides and secondary sulfonamides with ynamide as the key intermediate is described. This method provides a facile approach to (Z)-1,2-endiamide and aryl 1,1-endiamide derivatives via the β-hydroamidation of terminalynamides and the α-hydroamidation of internal ynamides, respectively. This reaction proceeded through double elimination
Nickel-Catalyzed Cascade Reaction of 2-Vinylanilines with <i>gem</i>-Dichloroalkenes
作者:Jin Lin、Chaoyi Wu、Xu Tian
DOI:10.1021/acs.orglett.2c01492
日期:2022.7.15
An efficientnickel-catalyzed cascade reaction of 2-vinylanilines with gem-dichloroalkenes has been developed to deliver diversely substituted quinolines in good to high yields. This protocol enables effective access to quinolines bearing various functional groups in the cascade process from readily available feedstock chemicals. Mechanistic studies suggest that two plausible pathways are involved