Neutral Palladium(II) Complexes with P,N Schiff-Base Ligands: Synthesis, Characterization and App... more Neutral Palladium(II) Complexes with P,N Schiff-Base Ligands: Synthesis, Characterization and Application as Suzuki-Miyaura Coupling Catalysts. -Palladium(II) complexes with P,N-bidentate Schiff base ligands are prepared and tested in Suzuki-Miyaura cross coupling reactions. A variety of substituents is tolerated both at the aryl bromide and at the arylboronic acid. -(MAHAMO, T.; MOGOROSI, M. M.; MOSS, J. R.; MAPOLIE, S. F.; SLOOTWEG, J. C.; LAMMERTSMA, K.; SMITH*, G. S.; J. Organomet. Chem. 703 (2012) 34-42, http://dx.doi.org/10.1016/j.jorganchem.2011.12.021 ; Dep. Chem., Univ. Cape Town, Rondebosch, Cape Town 7701, S. Afr.; Eng.) -Mischke 30-099
Palladium(II) complexes of the general formulae [PdCl 2 (P^N)] and [Pd(Me)Cl(P^N)] were obtained ... more Palladium(II) complexes of the general formulae [PdCl 2 (P^N)] and [Pd(Me)Cl(P^N)] were obtained from bidentate ligands bearing phosphine and imine donor groups. The complexes were shown to be highly active catalysts for the SuzukieMiyaura cross-coupling reaction. The complexes are tolerant of a wide variety of reaction conditions such as solvent, choice of base as well as substituents on both arylboronic acids and aryl halides.
Palladium(II) complexes of the general formulae [PdCl 2 (P^N)] and [Pd(Me)Cl(P^N)] were obtained ... more Palladium(II) complexes of the general formulae [PdCl 2 (P^N)] and [Pd(Me)Cl(P^N)] were obtained from bidentate ligands bearing phosphine and imine donor groups. The complexes were shown to be highly active catalysts for the SuzukieMiyaura cross-coupling reaction. The complexes are tolerant of a wide variety of reaction conditions such as solvent, choice of base as well as substituents on both arylboronic acids and aryl halides.
A series of new palladacycloalkanes of formula cis-[PdL 2 (CH 2 ) n ] (9. n = 6, L = PPh 3 ; 10. ... more A series of new palladacycloalkanes of formula cis-[PdL 2 (CH 2 ) n ] (9. n = 6, L = PPh 3 ; 10. n = 6, L 2 = dppe; 11. n = 8, L = PPh 3 ; 12. n = 8, L 2 = dppe) have been prepared by two routes. In the first route, the precursor bis(1-alkenyl) complexes cis-[PdL 2 ((CH 2 ) n CH@CH 2 ) 2 ] (1. n = 2, L = PPh 3 , 2. n = 2, L 2 = dppe, 3. n = 3, L = PPh 3 , 4. n = 3, L 2 = dppe) were allowed to react with Grubb's 2nd generation catalyst to give the palladacycloalkenes, cis-[PdL 2 (CH 2 ) n CH@CH(CH 2 ) n ] (5. n = 2, L = PPh 3 , 6. n = 2, L 2 = dppe, 7. n = 3, L = PPh 3 , 8. n = 3, L 2 = dppe), which were then hydrogenated to the palladacycloalkanes, 9-12. In the second route, the di-Grignard reagents BrMg(CH 2 ) n MgBr (n = 6, 8) were reacted with the palladium complex [PdCl 2 (COD)] followed by immediate ligand displacement to form the respective palladacycloalkanes 10 and 12. The complexes obtained were characterized by a range of spectroscopic and analytical techniques. Thermal decomposition studies were carried out on the palladacycloalkanes 9-12 and the main organic products shown to be 1-alkenes and 2-alkenes.
A new series of platinacyclopentanes (2a-2f ) and platinacycloheptanes (3a-3f ) of the type [Pt(N... more A new series of platinacyclopentanes (2a-2f ) and platinacycloheptanes (3a-3f ) of the type [Pt(N^P)(CH 2 ) n ] (n = 4, 6) were obtained by the reaction of [Pt(COD)(CH 2 ) n ] with the appropriate iminophosphine ligand (1a-1f). These complexes were characterised using a variety of spectroscopic and analytical techniques. X-ray structure analysis of complex 2a revealed a slightly distorted square planar geometry around platinum as a consequence of the ring strain imposed by the [P,N] chelate ring formed and the metallocycloalkane. Thermal decomposition analyses of the platinacycloalkanes revealed that the platinacyclopentanes are markedly stable, with the decomposition reaction requiring temperatures higher than 100°C to occur. The major products obtained from the thermal decomposition reactions were 1-butene (for platinacyclopentanes) and 1-hexene (for platinacycloheptanes). † CCDC 973798. For crystallographic data in CIF or other electronic format see
A new series of platinacyclopentanes (2a-2f ) and platinacycloheptanes (3a-3f ) of the type [Pt(N... more A new series of platinacyclopentanes (2a-2f ) and platinacycloheptanes (3a-3f ) of the type [Pt(N^P)(CH 2 ) n ] (n = 4, 6) were obtained by the reaction of [Pt(COD)(CH 2 ) n ] with the appropriate iminophosphine ligand (1a-1f). These complexes were characterised using a variety of spectroscopic and analytical techniques. X-ray structure analysis of complex 2a revealed a slightly distorted square planar geometry around platinum as a consequence of the ring strain imposed by the [P,N] chelate ring formed and the metallocycloalkane. Thermal decomposition analyses of the platinacycloalkanes revealed that the platinacyclopentanes are markedly stable, with the decomposition reaction requiring temperatures higher than 100°C to occur. The major products obtained from the thermal decomposition reactions were 1-butene (for platinacyclopentanes) and 1-hexene (for platinacycloheptanes). † CCDC 973798. For crystallographic data in CIF or other electronic format see
Neutral Palladium(II) Complexes with P,N Schiff-Base Ligands: Synthesis, Characterization and App... more Neutral Palladium(II) Complexes with P,N Schiff-Base Ligands: Synthesis, Characterization and Application as Suzuki-Miyaura Coupling Catalysts. -Palladium(II) complexes with P,N-bidentate Schiff base ligands are prepared and tested in Suzuki-Miyaura cross coupling reactions. A variety of substituents is tolerated both at the aryl bromide and at the arylboronic acid. -(MAHAMO, T.; MOGOROSI, M. M.; MOSS, J. R.; MAPOLIE, S. F.; SLOOTWEG, J. C.; LAMMERTSMA, K.; SMITH*, G. S.; J. Organomet. Chem. 703 (2012) 34-42, http://dx.doi.org/10.1016/j.jorganchem.2011.12.021 ; Dep. Chem., Univ. Cape Town, Rondebosch, Cape Town 7701, S. Afr.; Eng.) -Mischke 30-099
Palladium(II) complexes of the general formulae [PdCl 2 (P^N)] and [Pd(Me)Cl(P^N)] were obtained ... more Palladium(II) complexes of the general formulae [PdCl 2 (P^N)] and [Pd(Me)Cl(P^N)] were obtained from bidentate ligands bearing phosphine and imine donor groups. The complexes were shown to be highly active catalysts for the SuzukieMiyaura cross-coupling reaction. The complexes are tolerant of a wide variety of reaction conditions such as solvent, choice of base as well as substituents on both arylboronic acids and aryl halides.
Palladium(II) complexes of the general formulae [PdCl 2 (P^N)] and [Pd(Me)Cl(P^N)] were obtained ... more Palladium(II) complexes of the general formulae [PdCl 2 (P^N)] and [Pd(Me)Cl(P^N)] were obtained from bidentate ligands bearing phosphine and imine donor groups. The complexes were shown to be highly active catalysts for the SuzukieMiyaura cross-coupling reaction. The complexes are tolerant of a wide variety of reaction conditions such as solvent, choice of base as well as substituents on both arylboronic acids and aryl halides.
A series of new palladacycloalkanes of formula cis-[PdL 2 (CH 2 ) n ] (9. n = 6, L = PPh 3 ; 10. ... more A series of new palladacycloalkanes of formula cis-[PdL 2 (CH 2 ) n ] (9. n = 6, L = PPh 3 ; 10. n = 6, L 2 = dppe; 11. n = 8, L = PPh 3 ; 12. n = 8, L 2 = dppe) have been prepared by two routes. In the first route, the precursor bis(1-alkenyl) complexes cis-[PdL 2 ((CH 2 ) n CH@CH 2 ) 2 ] (1. n = 2, L = PPh 3 , 2. n = 2, L 2 = dppe, 3. n = 3, L = PPh 3 , 4. n = 3, L 2 = dppe) were allowed to react with Grubb's 2nd generation catalyst to give the palladacycloalkenes, cis-[PdL 2 (CH 2 ) n CH@CH(CH 2 ) n ] (5. n = 2, L = PPh 3 , 6. n = 2, L 2 = dppe, 7. n = 3, L = PPh 3 , 8. n = 3, L 2 = dppe), which were then hydrogenated to the palladacycloalkanes, 9-12. In the second route, the di-Grignard reagents BrMg(CH 2 ) n MgBr (n = 6, 8) were reacted with the palladium complex [PdCl 2 (COD)] followed by immediate ligand displacement to form the respective palladacycloalkanes 10 and 12. The complexes obtained were characterized by a range of spectroscopic and analytical techniques. Thermal decomposition studies were carried out on the palladacycloalkanes 9-12 and the main organic products shown to be 1-alkenes and 2-alkenes.
A new series of platinacyclopentanes (2a-2f ) and platinacycloheptanes (3a-3f ) of the type [Pt(N... more A new series of platinacyclopentanes (2a-2f ) and platinacycloheptanes (3a-3f ) of the type [Pt(N^P)(CH 2 ) n ] (n = 4, 6) were obtained by the reaction of [Pt(COD)(CH 2 ) n ] with the appropriate iminophosphine ligand (1a-1f). These complexes were characterised using a variety of spectroscopic and analytical techniques. X-ray structure analysis of complex 2a revealed a slightly distorted square planar geometry around platinum as a consequence of the ring strain imposed by the [P,N] chelate ring formed and the metallocycloalkane. Thermal decomposition analyses of the platinacycloalkanes revealed that the platinacyclopentanes are markedly stable, with the decomposition reaction requiring temperatures higher than 100°C to occur. The major products obtained from the thermal decomposition reactions were 1-butene (for platinacyclopentanes) and 1-hexene (for platinacycloheptanes). † CCDC 973798. For crystallographic data in CIF or other electronic format see
A new series of platinacyclopentanes (2a-2f ) and platinacycloheptanes (3a-3f ) of the type [Pt(N... more A new series of platinacyclopentanes (2a-2f ) and platinacycloheptanes (3a-3f ) of the type [Pt(N^P)(CH 2 ) n ] (n = 4, 6) were obtained by the reaction of [Pt(COD)(CH 2 ) n ] with the appropriate iminophosphine ligand (1a-1f). These complexes were characterised using a variety of spectroscopic and analytical techniques. X-ray structure analysis of complex 2a revealed a slightly distorted square planar geometry around platinum as a consequence of the ring strain imposed by the [P,N] chelate ring formed and the metallocycloalkane. Thermal decomposition analyses of the platinacycloalkanes revealed that the platinacyclopentanes are markedly stable, with the decomposition reaction requiring temperatures higher than 100°C to occur. The major products obtained from the thermal decomposition reactions were 1-butene (for platinacyclopentanes) and 1-hexene (for platinacycloheptanes). † CCDC 973798. For crystallographic data in CIF or other electronic format see
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