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.
作者:Yasuyuki KITA、Masahiro EGI、Makoto OHTSUBO、Toyokazu SAIKI、Akiko OKAJIMA、Takeshi TAKADA、Hirofumi TOHMA
DOI:10.1248/cpb.47.241
日期:——
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.
利用高价碘(III)试剂,苯基碘(III)双(三氟乙酸酯)(PIFA)和三甲基硅基三氟甲磺酸酯(TMSOTf)的组合,已经开发出了一种新颖且高效的合成方法,用于从带有烷基叠氮侧链的取代苯酚醚(1a-k)合成醌亚胺缩酮(2a-j)和醌亚胺(4a-h)。