Application of 224311-51-7. Let’s face it, organic chemistry can seem difficult to learn. Especially from a beginner’s point of view. Like 224311-51-7, Name is 2-(Di-tert-Butylphosphino)biphenyl. In a document type is Article, introducing its new discovery.
A comparative study involving bimetallic nickel catalysts designed from disubstituted N,N,N?,N?-tetra(diphenylphosphanylmethyl)benzene diamine bridging ligands is reported. Catalyst behavior is explored in the Kumada catalyst-transfer polymerization (KCTP) using poly(3-hexylthiophene) (P3HT) as the model system. The success of a controlled polymerization is monitored by analyzing monomer conversion, degree of polymerization, end-group identity, and molecular weight distribution. The characterization of P3HT obtained from KCTP initiated with the bimetallic catalysts shows chain-growth behavior; however, the presence of Br/Br end-groups and broader molecular weight distribution reveals a reduced controlled polymerization compared to the commonly employed Ni(dppp)Cl2. The observed increase in intermolecular chain transfer and termination processes in KCTP initiation with the bimetallic catalysts can be attributed to a weaker Ni(0)-pi-aryl complex interaction, which is caused by increased steric crowding of the coordination sphere.
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Reference：
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate