Hypervalent Iodine(III)-induced Intramolecular Cyclization Reaction of Substituted Phenol Ethers with an Alkyl Azido Side-chain: A Novel and Efficient Synthesis of Quinone Imine Derivatives.
aromatic amines were identified by the GC-MS and EPR techniques as nitroxyls, quinone nitrones, quinone imines, and for diarylamines also as the products of C-N bond cleavage-substituted nitrobenzenes, anilines and phenols. It was shown that nitroxyl radicals are the primary paramagnetic products of the reaction and do not form by the interaction of aminyl radicals with dioxygen. A mechanism of the amide
Paths of conversion of aminyl radicals of the tetrahydroquinoline series upon interaction with peroxy radicals
作者:O. T. Kasaikina、T. V. Lobanova、D. V. Fentsov
DOI:10.1007/bf00955758
日期:1983.10
Hypervalent Iodine(III)-induced Intramolecular Cyclization Reaction of Substituted Phenol Ethers with an Alkyl Azido Side-chain: A Novel and Efficient Synthesis of Quinone Imine Derivatives.
Novel and efficient syntheses of quinone imine ketals (2a-j) and quinone imines (4a-h) from substituted phenol ethers (1a-k) bearing an alkyl azido side-chain using the combination of hypervalent iodine(III) reagent, phenyliodine(III) bis(trifluoroacetate) (PIFA) and trimethylsilyl trifuoromethanesulfonate (TMSOTf), have been developed.