Neighboring effect of pyrazole rings: regio- and stereoselective Wagner–Meerwein rearrangement in electrophilic addition reactions of norbornadiene-fused pyrazoles
作者:Tomoshige Kobayashi、Yosuke Uchiyama
DOI:10.1039/b002454f
日期:——
The electrophilic additionreactions of norbornadiene-fused pyrazoles with bromine or p-nitrobenzenesulfenyl chloride provided the skeletally rearranged adducts regio- and stereoselectively probably via the neighboring group participation of a pyrazole ring accompanied by the formation of a bridged pyrazolium ion.