Catalytic and Mechanistic Developments of the Nickel(II) Pincer Complex‐Catalyzed Hydroarsination Reaction
作者:Wee Shan Tay、Yunpeng Lu、Xiang‐Yuan Yang、Yongxin Li、Sumod A. Pullarkat、Pak‐Hing Leung
DOI:10.1002/chem.201902138
日期:——
significantly slowed the development of the catalytic asymmetric hydroarsinationreaction despite it being a highly attractive C-As bond formation methodology. In addition, there is a poor understanding of the main reaction steps in such reactions which limit further development in the field. Herein, key intermediates of the hydroarsinationreactioncatalyzed by a PCP NiII -Cl pincercomplex are presented upon
Copper-catalyzed routes have been achieved for the synthesis of 3-nitroquinolines from readily available nitroolefins and anthranils. This reaction proceeds via the [4+2] cycloaddition between anthranils and nitro-styrenes under mild reaction conditions to obtain biologically important heterocycles. A wide range of diversely substituted nitro-olefins and anthranils are successfully employed in this
Highly enantioselectiveMichaelreactions between acetylacetone and trans-β-nitroolefins are achieved by a novel ferrocenophane-based tertiary amine-thiourea organocatalyst to provide the corresponding products in good to excellent yields (up to 95%) and enantioselectivities (up to 99% ee).