Chemical engineers ensure the efficiency and safety of chemical processes, adapt the chemical make-up of products to meet environmental or economic needs, and apply new technologies to improve existing processes. 502496-34-6, Name is 4-Bromo-2-fluoro-6-nitrotoluene, SMILES is CC1=C([N+]([O-])=O)C=C(Br)C=C1F, belongs to phthalazine compound. In a document, author is Karishma, Pidiyara, introduce the new discover, Reference of 502496-34-6.
A direct carbocyclization of 2-aryl-2,3-dihydrophthalazine-1,4-diones is achieved using isocyanates as carbonyl source via Ru(II)-catalyzed sequential ortho-amidation followed by intramolecular nucleophilic substitution, delivering substituted indazolo[1,2-b]phthalazine-triones in good-to-excellent yields. For ortho-substituted 2-aryl-2,3-dihydrophthalazine-1,4-diones, the corresponding amidated products were also isolated in excellent yields by modifying the reaction parameters. Application of isocyanates as carbonyl source, high functional group tolerance on the two coupling partners and diverse chemical transformation of the synthesized fused and functionalized phthalazinones are the key highlights of the work.
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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem