Relevant articles and documents
Comparative study of chemically immobilized and conventional homogeneous ionic liquids as phase-transfer catalysts for the N -alkylation of heterocyclic compounds
Dogra, Shallu Sharma, Madan L. Singh, Jasvinder
Various ionic liquids (ILs) were screened for their phase-transfer catalytic (PTC) activity using the N-alkylation of nitrogen heterocycles as the model reaction. Immobilized ILs behaved extremely well and proved to be far better catalysts than conventional homogeneous PTCs in terms of their stability, easy recovery, and reusability. The investigation also demonstrated that quaternary tetraalkylammonium salts offer very high catalytic activity, whereas aromatic heterocyclic tetravalent nitrogen catalysts (imidazolium- and pyridinium-based salts) were poorly active.
Efficient one-pot synthesis of N-substituted phthalimides/naphthalimides from azides and anhydrides by iodotrimethylsilane
Kamal, Ahmed Laxman Laxman Rao, N. Venugopal
N-Substituted phthalimides and naphthalimides have been obtained in good to excellent yields, employing chlorotrimethylsilane and sodium iodide (in situ generation of iodotrimethylsilane) from corresponding azides and anhydrides under mild conditions.
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