1237786-79-6Relevant academic research and scientific papers
Copper-Catalyzed Enantioselective Coupling between Allyl-boronates and Phosphates Using a Phenol-Carbene Chiral Ligand: Asymmetric Synthesis of Chiral Branched 1,5-Dienes
Yasuda, Yuto,Ohmiya, Hirohisa,Sawamura, Masaya
, p. 2235 - 2246 (2018)
Details of the Cu-catalyzed enantioselective allyl-allyl coupling reaction between allylboronates and (Z)-allylic phosphates using a new chiral N -heterocyclic carbene (NHC) ligand containing a phenolic hydroxy group are presented. The copper catalysis delivers enantio-enriched chiral 1,5-dienes with a tertiary stereogenic center. Compatibility with various functional groups and the use of earth-abundant and relatively low-toxicity copper as a metal are attractive features of this protocol. The utility of the chiral phenol-NHC ligand for enantioselective copper catalysis with organoboron compounds is demonstrated and enantiodiscrimination models are discussed.
Copper-Catalyzed Enantioselective Allyl–Allyl Coupling between Allylic Boronates and Phosphates with a Phenol/N-Heterocyclic Carbene Chiral Ligand
Yasuda, Yuto,Ohmiya, Hirohisa,Sawamura, Masaya
supporting information, p. 10816 - 10820 (2016/09/03)
Copper-catalyzed enantioselective allyl–allyl coupling between allylboronates and either Z-acyclic or cyclic allylic phosphates using a new chiral N-heterocyclic carbene ligand, bearing a phenolic hydroxy, is reported. This reaction occurs with exceptional SN2′-type regioselectivities and high enantioselectivities to deliver chiral 1,5-diene derivatives with a tertiary stereogenic center at the allylic/homoallylic position.
Catalytic enantioselective allyl-allyl cross-coupling with a borylated allylboronate
Le, Hai,Kyne, Robert E.,Brozek, Laura A.,Morken, James P.
, p. 1432 - 1435 (2013/07/05)
Catalytic enantioselective allyl-allyl cross-coupling of a borylated allylboronate reagent gives versatile borylated chiral 1,5-hexadienes. These compounds may be manipulated in a number of useful ways to give functionalized chiral building blocks for asymmetric synthesis.
Construction of 1,5-enynes by stereospecific Pd-catalyzed allyl-propargyl cross-couplings
Ardolino, Michael J.,Morken, James P.
supporting information; experimental part, p. 8770 - 8773 (2012/07/02)
The palladium-catalyzed cross-coupling of chiral propargyl acetates and allyl boronates delivers chiral 1,5-enynes with excellent levels of chirality transfer and can be applied across a broad range of substrates.
Pd-catalyzed enantioselective allyl-allyl cross-coupling
Zhang, Ping,Brozek, Laura A.,Morken, James P.
supporting information; experimental part, p. 10686 - 10688 (2010/11/04)
The Pd-catalyzed cross-coupling of allylic carbonates and allylB(pin) is described. The regioselectivity of this reaction is sensitive to the bite angle of the ligand, with small-bite-angle ligands favoring the branched substitution product. This mode of
