150255-47-3Relevant articles and documents
Synthesis of nickel and palladium complexes with diarylamido-based unsymmetrical pincer ligands and application for norbornene polymerization
Liu, Hui,Yuan, Haibin,Shi, Xiaochao
, p. 609 - 617 (2019/01/08)
A set of diarylamido-based unsymmetrical [PNNox] pincer ligands containing a chiral oxazoline ring have been synthesized and their nickel and palladium complexes [(2-PPh2(R1)ArN(R1)Ar-2-(R)oxazoline)MCl] (R1 = 4-H, R = (S)-4-iPr, M = Pd (Pd1); R1 = 4-H, R = (S)-4-Bn, M = Pd (Pd2); R1 = 4-H, R = (S)-4-Ph, M = Pd (Pd3); R1 = 4-Me, R = (S)-4-Bn, M = Pd (Pd4); R1 = 4-Me, R = (S)-4-Ph, M = Pd (Pd5); R1 = 4-H, R = 4-Me2, M = Pd (Pd6); R1 = 4-H, R = Benzo[d]-, M = Pd (Pd7); R1 = 4-H, R = (S)-4-Bn, M = Ni (Ni1); R1 = 4-H, R = (S)-4-Ph, M = Ni (Ni2); R1 = 4-Me, R = (S)-4-Bn, M = Ni (Ni3); R1 = 4-Me, R = (S)-4-Ph, M = Pd (Ni4)) were tested to show high catalytic activities for polymerization of norbornene. After activation of methylaluminoxane (MAO), all the nickel and palladium complexes could catalyze the polymerization of norbornene to yield vinyl-type polymers with activities up to 40.3 × 105 g of PNB (mol of Pd)?1 h?1. The copolymerization of norbornene with functional norbornene comonomers was also investigated by catalyst Pd2, accompanied by decreased catalytic activity and low incorporation of functional comonomers.
Palladium-catalysed Asymmetric Allylic Substitution: a Ligand Design Incorporating Steric and Electronic Effects
Allen, Joanne V.,Coote, Steven J.,Dawson, Graham J.,Frost, Christopher G.,Martin, Christopher J.,Williams, Jonathon, M.
, p. 2065 - 2072 (2007/10/02)
Enantiomerically pure ligands containing a 4,5-dihydrooxazole moiety tethered to an auxiliary sulfur or phosphorus donor have been prepared.These ligands have been exploited for palladium-catalysed asymmetric allylic substitution, providing enantioselectivity in the catalytic reaction is discussed in terms of the steric and electronic influences provided by the ligand.
Asymmetric Palladium Catalysed Allylic Substitution Using Phosphorus Containing Oxazoline Ligands
Dawson, Graham J.,Frost, Christopher G.,Williams, Jonathan M. J.,Coote, Steven J.
, p. 3149 - 3150 (2007/10/02)
A series of new phosphorus-containing oxazoline ligands has been developed.The use of these ligands for asymmetric palladium catalysed allylic substitution of 1,3-diphenylprop-2-enyl-1-acetate 12 with the sodium salt of dimethylmalonate has been achieved
