Pd-Catalyzed Reaction of Sterically Hindered Hydrazones with Aryl Halides: Synthesis of Tetra-Substituted Olefins Related to iso-Combretastatin A4
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作者:
Brachet, Etienne
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Univ Paris 11, CNRS, Chim Therapeut Lab, Fac Pharm,BioCIS UMR 8076, F-92296 Chatenay Malabry, FranceUniv Paris 11, CNRS, Chim Therapeut Lab, Fac Pharm,BioCIS UMR 8076, F-92296 Chatenay Malabry, France
Brachet, Etienne
[1
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Hamze, Abdallah
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Univ Paris 11, CNRS, Chim Therapeut Lab, Fac Pharm,BioCIS UMR 8076, F-92296 Chatenay Malabry, FranceUniv Paris 11, CNRS, Chim Therapeut Lab, Fac Pharm,BioCIS UMR 8076, F-92296 Chatenay Malabry, France
Hamze, Abdallah
[1
]
Peyrat, Jean-Francois
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Univ Paris 11, CNRS, Chim Therapeut Lab, Fac Pharm,BioCIS UMR 8076, F-92296 Chatenay Malabry, FranceUniv Paris 11, CNRS, Chim Therapeut Lab, Fac Pharm,BioCIS UMR 8076, F-92296 Chatenay Malabry, France
Peyrat, Jean-Francois
[1
]
Brion, Jean-Daniel
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Univ Paris 11, CNRS, Chim Therapeut Lab, Fac Pharm,BioCIS UMR 8076, F-92296 Chatenay Malabry, FranceUniv Paris 11, CNRS, Chim Therapeut Lab, Fac Pharm,BioCIS UMR 8076, F-92296 Chatenay Malabry, France
Brion, Jean-Daniel
[1
]
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Alami, Mouad
[1
]
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[1] Univ Paris 11, CNRS, Chim Therapeut Lab, Fac Pharm,BioCIS UMR 8076, F-92296 Chatenay Malabry, France
PdCl(2)(MeCN)(2) in combination with dppp proved to be a powerful and efficient catalyst for the coupling of sterically hindered N-arylsulfonylhydrazones with aryl halides, thus providing a flexible and convergent access to tetrasubstituted olefins related to iso-combretastatin A4 in good yields. This new protocol has been applied successfully to the formal synthesis of biphenylisopropylidene 4-pyridine CYP17 inhibitor, 12b, of biological interest.
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Univ Pretoria, Fac Vet Sci, Dept Paraclin Sci, ZA-0110 Onderstepoort, South AfricaUniv Pretoria, Fac Vet Sci, Dept Paraclin Sci, ZA-0110 Onderstepoort, South Africa
Eloff, J. N.
Katerere, D. R.
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Univ Pretoria, Fac Vet Sci, Dept Paraclin Sci, ZA-0110 Onderstepoort, South AfricaUniv Pretoria, Fac Vet Sci, Dept Paraclin Sci, ZA-0110 Onderstepoort, South Africa
Katerere, D. R.
McGaw, L. J.
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Univ Pretoria, Fac Vet Sci, Dept Paraclin Sci, ZA-0110 Onderstepoort, South AfricaUniv Pretoria, Fac Vet Sci, Dept Paraclin Sci, ZA-0110 Onderstepoort, South Africa
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Univ Pretoria, Fac Vet Sci, Dept Paraclin Sci, ZA-0110 Onderstepoort, South AfricaUniv Pretoria, Fac Vet Sci, Dept Paraclin Sci, ZA-0110 Onderstepoort, South Africa
Eloff, J. N.
Katerere, D. R.
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Univ Pretoria, Fac Vet Sci, Dept Paraclin Sci, ZA-0110 Onderstepoort, South AfricaUniv Pretoria, Fac Vet Sci, Dept Paraclin Sci, ZA-0110 Onderstepoort, South Africa
Katerere, D. R.
McGaw, L. J.
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Univ Pretoria, Fac Vet Sci, Dept Paraclin Sci, ZA-0110 Onderstepoort, South AfricaUniv Pretoria, Fac Vet Sci, Dept Paraclin Sci, ZA-0110 Onderstepoort, South Africa