Application of 2935-35-5, As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 2935-35-5, Name is H-Phg-OH, SMILES is O=C(O)[C@@H](N)C1=CC=CC=C1, belongs to phthalazine compound. In a article, author is Appleby, Kate M., introduce new discover of the category.
The reaction of [Ir(IMes)(COD)Cl], [IMes = 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene, COD = 1,5-cyclooctadiene] with pyridazine (pdz) and phthalazine (phth) results in the formation of [Ir(COD)(IMes)(pdz)]Cl and [Ir(COD)(IMes)(phth)]Cl. These two complexes are shown by nuclear magnetic resonance (NMR) studies to undergo a haptotropic shift which interchanges pairs of protons within the bound ligands. When these complexes are exposed to hydrogen, they react to form [Ir(H)(2)(COD)(IMes)(pdz)]Cl and [Ir(H)(2)(COD)(IMes)(phth)]Cl, respectively, which ultimately convert to [Ir(H)(2)(IMes)(pdz)(3)]Cl and [Ir(H)(2)(IMes)(phth)(3)] Cl, as the COD is hydrogenated to form cyclooctane. These two dihydride complexes are shown, by NMR, to undergo both full N-heterocycle dissociation and a haptotropic shift, the rates of which are affected by both steric interactions and free ligand pK(a) values. The use of these complexes as catalysts in the transfer of polarisation from para-hydrogen to pyridazine and phthalazine via signal amplification by reversible exchange (SABRE) is explored. The possible future use of drugs which contain pyridazine and phthalazine motifs as in vivo or clinical magnetic resonance imaging probes is demonstrated; a range of NMR and phantom-based MRI measurements are reported.
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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem