Rapid synthesis of an electron-deficient t-BuPHOX ligand: cross-coupling of aryl bromides with secondary phosphine oxides
摘要:
Herein an efficient and direct copper-catalyzed coupling of oxazoline-containing aryl bromides with electron-deficient secondary phosphine oxides is reported. The resulting tertiary phosphine oxides can be reduced to prepare a range of PHOX ligands. The presented strategy is a useful alternative to known methods for constructing PHOX derivatives. (C) 2010 Elsevier Ltd. All rights reserved.
Rapid synthesis of an electron-deficient t-BuPHOX ligand: cross-coupling of aryl bromides with secondary phosphine oxides
作者:Nolan T. McDougal、Jan Streuff、Herschel Mukherjee、Scott C. Virgil、Brian M. Stoltz
DOI:10.1016/j.tetlet.2010.08.039
日期:2010.10
Herein an efficient and direct copper-catalyzed coupling of oxazoline-containing aryl bromides with electron-deficient secondary phosphine oxides is reported. The resulting tertiary phosphine oxides can be reduced to prepare a range of PHOX ligands. The presented strategy is a useful alternative to known methods for constructing PHOX derivatives. (C) 2010 Elsevier Ltd. All rights reserved.
Cobalt-Catalyzed Enantioselective Hydroboration of α-Substituted Acrylates
作者:Manoj D. Patil、Kiron Kumar Ghosh、T. V. RajanBabu
DOI:10.1021/jacs.3c12020
日期:2024.3.13
C–N, and C–C bonds, these intermediates could serve as valuable chiral synthons, some from feedstock carbon sources, for the synthesis of propionate-bearing motifs including polyketides and related molecules. Two-step syntheses of “Roche” ester from methyl methacrylate (79%; er 99:1), arguably the most widely used chiral fragment in polyketide synthesis, and tropic acid esters (∼80% yield; er ∼93:7)