[EN] CATALYZED ENANTIOSELECTIVE TRANSFORMATION OF ALKENES<br/>[FR] TRANSFORMATION ENANTIO-SELECTIVE CATALYSEE D'ALCENES
申请人:UNIV NORTH CAROLINA
公开号:WO2005012209A3
公开(公告)日:2005-08-11
Catalytic Asymmetric Carbohydroxylation of Alkenes by a Tandem Diboration/Suzuki Cross-Coupling/Oxidation Reaction
作者:Steven P. Miller、Jeremy B. Morgan、Nepveux、James P. Morken
DOI:10.1021/ol036219a
日期:2004.1.1
Chiral nonsymmetric 1,2-diboron adducts are generated by catalytic enantioselective diboration. Oxidation of these adducts provides 1,2-diols in good yield. Alternatively, 1,2-diboron compounds may be reacted, in situ, with aryl halides wherein the less hindered C-B bond participates in cross-coupling. The remaining C-B bond is then oxidized in the reaction workup thereby allowing for net asymmetric carbohydroxylation of alkenes in a tandem one-pot diboration/Suzuki coupling/oxidation sequence.
Pd-Catalyzed Conjunctive Cross-Coupling between Grignard-Derived Boron “Ate” Complexes and C(sp<sup>2</sup>) Halides or Triflates: NaOTf as a Grignard Activator and Halide Scavenger
作者:Gabriel J. Lovinger、Mark D. Aparece、James P. Morken
DOI:10.1021/jacs.6b12663
日期:2017.3.1
Catalytic enantioselectiveconjunctivecross-couplings that employ Grignard reagents are shown to furnish an array of nonracemic chiral organoboronic esters in an efficient and highly selective fashion. The utility of sodium triflate in facilitating this reaction is two-fold: it enables "ate" complex formation and overcomes catalytic inhibition by halide ions.