Abstract Two simple one-pot phasetransfer catalytic methods for the preparation of ketoxime O-ethers from the corresponding ketoximes and alkyl iodides prepared in situ from alkyl chlorides were developed. The corresponding aryl and hetaryl ketoxime O-ethers were obtained in 15–83% yields.
Fused tetracyclic compounds containing two thiophene rings, one pyridine ring and a triazine ring and which are useful as antiallergic agents are described herein. The compounds are prepared by the reaction of an appropriate substituted aminocarboxamine with sodium nitrite in an acid such as acetic acid.
(1H-Tetrazol-5-yl)tetrazolo[1,5-a]thienopyridines and related compounds which are useful as antiallergic agents are described herein. The compounds are prepared by the reaction of an appropriate halocyano-quinoline with ammonium chloride and an azide such as sodium azide in an inert solvent such as dimethylformamide.
(1H-Tetrazol-5-yl)thienopyridinones and related compounds which are useful as antiallergic agents are described herein. The compounds are prepared by the reaction of an appropriate cyanoketone with ammonium chloride and an azide such as sodium azide in an inert solvent such as dimethylformamide.