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A one‐pot method for the preparation of diamino‐substituted naphthalene derivatives from easily available starting materials aryl halides, 1,4‐bis(trimethylsilyl)butadiyne and amines is developed. Two C−N bonds, three C−C bonds and one aromatic ring are formed in this domino process. This transformation is achieved by the cooperative catalysis of Pd(OAc)2, Cu(Xantphos)I and Cu(OTf)2. A possible double Sonogashira coupling/hydroamination/ benzannulation reaction route is proposed. [ABSTRACT FROM AUTHOR]

In the presence of a catalytic amount of zirconium(IV) chloride, an efficient synthesis of new 4-(2-hydroxyphenyl)pyrazolo[3,4-b]pyridines has been developed by the reaction 2-hydroxychalcones with 3-methyl-1-phenyl-1H-pyrazol-5-amine in refluxing ethanol. All these novel compounds have been characterised by 1H NMR, 13C NMR, HRMS, IR spectra and X-ray crystallographic analysis. [ABSTRACT FROM AUTHOR]

Thioglycoluril as a novel hydrogen-bonding organocatalyst, combined with NBS, in MeOH provided rapid and efficient α-monobromination of 1,3-dicarbonyl compounds in excellent yields at room temperature. A bifunctional catalytic mechanism was proposed from these results. [ABSTRACT FROM AUTHOR]

The article presents chemical equations related to synthesis of benzopyran derivatives which includes di-aromatic fused [3.3.1] bicyclic compounds' facile synthesis and phase-transfer caytalysis, published in the volume 11 of 2013 issue of the journal "Organic & Biomolecular Chemistry."

Aryl bromides/iodides and electron-poor aryl chlorides are suitable substrates for the title reaction. [ABSTRACT FROM AUTHOR]

The copper-catalyzed reaction of isatins (I) with 2-bromopyridines (II) leads to a variety of pyrido-fused quinazolinones (III). [ABSTRACT FROM AUTHOR]