1364458-18-3Relevant academic research and scientific papers
Generation and Application of (Diborylmethyl)zinc(II) Species: Access to Enantioenriched gem-Diborylalkanes by an Asymmetric Allylic Substitution
Lee, Yeosan,Park, Jinyoung,Cho, Seung Hwan
, p. 12930 - 12934 (2018)
We report the successful generation of (diborylmethyl)zinc(II) species by transmetallation beteween isolable (diborylmethyl)lithium and zinc(II) halide (X=Br, Cl) and their application in the synthesis of enantioenriched gem-diborylalkanes bearing a stereogenic center at the β-position of the diboryl groups by an asymmetric allylic substitution reaction. The reaction has a broad substrate scope, and various enantioenriched gem-diborylalkanes can be obtained in good yields with excellent enantioselectivity. Further elaboration of the enantioenriched gem-diborylalkanes provides access to a diverse set of valuable chiral building blocks.
1,1-Diborylalkyl-1-Metal Compounds, Preparation Method Thereof, and Their Applications Toward Synthesis of 1,1-Diboronate Ester Compounds
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, (2019/09/06)
The present invention relates to a 1,1-diborylalkyl-1-metal compound including one metal group together with two identical boron groups at the sp3 carbon center, and its use. Specifically, the present invention relates to development of novel organic reactions, synthesis of functional molecules, and synthesis of new drugs by applying the novel 1,1-diboryl-1-metal substituted alkyl compounds to various molecular libraries which could not be synthesized by conventional methodologies.
Copper-free asymmetric allylic alkylation using grignard reagents on bifunctional allylic bromides
Grassi, David,Alexakis, Alexandre
supporting information; experimental part, p. 1568 - 1571 (2012/06/01)
A series of substrates containing a vinylic bromide were employed in a copper-free methodology using bidendate NHC ligands. The desired compounds are generally obtained with good enantioselectivity and good regioselectivity. Importantly the copper-catalyzed system afforded a lower enantioselectivity value. The catalytic products could be transformed into a broad scope of new 1,1-disubstituted olefins in a single step transformation without erosion of the enantioselectivity.
