Enantioselective copper-catalyzed conjugate borylation of alpha,beta-unsaturated phosphonates with bis(pinacolato)diboron affords chiral tertiary organoboronate esters with a vicinal phosphonate group in good yields and enantiomeric excess. Linear aliphatic, aromatic, and heteroaromatic substituents at the beta-position can be accommodated, and oxidation of the borylated organophosphonate products leads to beta-hydroxyphosphonates. (C) 2019 Elsevier Ltd. All rights reserved.
机构:
Hokkaido Univ, Div Appl Chem, Fac Engn, Sapporo, Hokkaido, Japan
Hokkaido Univ, Fac Engn, Frontier Chem Ctr, Sapporo, Hokkaido, JapanHokkaido Univ, Div Appl Chem, Fac Engn, Sapporo, Hokkaido, Japan
机构:
Hokkaido Univ, Grad Sch Engn, Div Appl Chem, Sapporo, Hokkaido, JapanHokkaido Univ, Grad Sch Engn, Div Appl Chem, Sapporo, Hokkaido, Japan
Iwamoto, Hiroaki
Imamoto, Tsuneo
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Nippon Chem Ind Co Ltd, Organ R&D Dept, Tokyo, Tokyo, Japan
Chiba Univ, Grad Sch Sci, Dept Chem, Chiba, Chiba, JapanHokkaido Univ, Grad Sch Engn, Div Appl Chem, Sapporo, Hokkaido, Japan
Imamoto, Tsuneo
Ito, Hajime
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Hokkaido Univ, Grad Sch Engn, Div Appl Chem, Sapporo, Hokkaido, Japan
Hokkaido Univ, Inst Chem React Design & Discovery ICReDD, Sapporo, Hokkaido, JapanHokkaido Univ, Grad Sch Engn, Div Appl Chem, Sapporo, Hokkaido, Japan
Ito, Hajime
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY,
2019,
258