368891-67-2Relevant academic research and scientific papers
Synthesis and structural characterization of a nickel(II) precatalyst bearing a β-triketimine ligand and study of its ethylene polymerization performance using response surface methods
Hamedani, Nona Ghasemi,Arabi, Hassan,Zohuri, Gholam Hossein,Mair, Francis S.,Jolleys, Andrew
, p. 1520 - 1532 (2013)
The reaction of N-(4-(mesitylamino)pent-3-en-2-ylidene)-2,4,6- trimethylbenzenamine (1) with n-butyl lithium and then with N-(2,4,6-trimethyl- phenyl)-acetimidoyl chloride yields a new β-triketimine ligand, N-(4-(mesitylamino)-3-(1-(mesitylimino)ethyl)pen
Rational Design of an Iron-Based Catalyst for Suzuki–Miyaura Cross-Couplings Involving Heteroaromatic Boronic Esters and Tertiary Alkyl Electrophiles
Byers, Jeffery A.,Crockett, Michael P.,Li, Bo,Wong, Alexander S.
supporting information, p. 5392 - 5397 (2020/03/04)
Suzuki–Miyaura cross-coupling reactions between a variety of alkyl halides and unactivated aryl boronic esters using a rationally designed iron-based catalyst supported by β-diketiminate ligands are described. High catalyst activity resulted in a broad substrate scope that included tertiary alkyl halides and heteroaromatic boronic esters. Mechanistic experiments revealed that the iron-based catalyst benefited from the propensity for β-diketiminate ligands to support low-coordinate and highly reducing iron amide intermediates, which are very efficient for effecting the transmetalation step required for the Suzuki–Miyaura cross-coupling reaction.
Synthesis and characterization of β-triketimine cobalt complexes and their behaviour in the polymerization of 1,3-butadiene
Alnajrani, Mohammed N.,Mair, Francis S.
, p. 15727 - 15736 (2015/01/09)
Three β-triketimine ligands, (L1: [CH{CMeN(2,4,6-Me3-C6H2)}2C(CMe3N(2-MeO-C6H4)], L2: [CH{CMeN(2,4-Me2-C6H3)}2C(
Comparative study of lactide polymerization by zinc alkoxide complexes with a β-diketiminato ligand bearing different substituents
Chen, Hsuan-Ying,Peng, Ya-Liu,Huang, Tai-Hsiung,Sutar, Alekha Kumar,Miller, Stephen A.,Lin, Chu-Chieh
scheme or table, p. 61 - 71 (2011/06/17)
A series of β-diketiminate zinc complexes has been synthesized and their reactivity for the ring-opening polymerization (ROP) of lactide has been studied. The reaction of β-diketimines (LH) with diethyl zinc forms the monomeric [LZnEt] complexes which further react with benzyl alcohol (BnOH) in toluene/hexane yielding dinuclear or trinuclear zinc complexes. These complexes have been characterized by single crystal X-ray diffraction, which showed the tri- and tetra-coordinated zinc complexes in which zinc atoms exhibit trigonal and tetrahedral geometry, respectively. All complexes have been tested as initiators for the ring-opening polymerization of lactide; they are all highly active. The rate of polymerization is heavily dependent on the N-aryl substituents with the order: alkyl group ～ alkoxy > halide group > nitro group. The β-diketiminate zinc complexes allow controlled ring-opening polymerization as shown by the linear relationship between the percentage conversion and the number-average molecular weight. On the basis of literature reports, a mechanism for ROP of lactide has been proposed.
