A series of monoazo disperse dyes based on naphthalimide was synthesized using N-alkylcarboxylic acid-1,8-naphthalimide as diazo component and N,N-diethylaniline derivatives as a coupling components. 4-amino-N-ethanoic (propanoic) acid-1,8-naphthalimide was synthesized from 4-nitro-1,8-naphthalic anhydride by imidation and subsequent reduction reactions. These compounds were diazotized and furt...

We find the exact semiclassical (strong coupling) zero-point energy shifts applicable to the e⊗ (n E) and t⊗ (n H) dynamic Jahn-Teller problems, for an arbitrary number n of vibrational modes simultaneously coupled to one single electronic level. We also obtain an analytical formula for the frequency of the modes, which has an attractive and apparently general Slater-Koster form. The limits of ...

Transition metal‐free Claisen‐type condensation between two different amides was developed. N ‐phenyl‐ ‐tosylbenzamide derivatives reacted with enolizable such as ‐methyl pyrrolidinone and , ‐dimethyl acetamide in the presence of NaHMDS to give their corresponding β ‐ketoamides moderate‐to‐good yields.

Herein, we report a copper-catalyzed C-O cross-coupling of N-methoxy amides and arylboronic acids for the synthesis aryl-N-methoxy arylimides. The fully selective O-arylation is found to be greatly prompted by inexpensive commercially available CuI. reaction conditions tolerate variety functional groups promote different reactivities depending on electronic steric properties distorted substrates.