The continued interest in designing new types of phosphorus based ligands is essentially due to their adoptability to all types of metallic environments, and also to co-exist with other ligands and perform as good catalysts in organic transformations.1 If the phosphorus moieties are attached to heteroaryl groups having donor atoms such as nitrogen, oxygen or sulphur in close proximity to phosphorus atom, the coordination behaviour of such ligands would be interesting due to the difference in the donor and acceptor properties. Further, complexes of this type of ligands can show better catalytic activity owing to the difference in the M—L bond dissociation energy, which is important to generate active catalytic species prior to the oxidative addition, an important step in homogeneous catalysis.2 Recently we reported several pyrazole, imidazole and triazole based mono- and bisphosphines and studied their coordination chemistry and catalytic applications.3 A few such systems will be deliberated in the presentation.

Tertiary phosphines and bisphosphines appended on N-heterocyclic moieties: Transition metal chemistry and catalytic studies

2019 Fall National Meeting

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