Chemie freier, cyclischer vicinaler Tricarbonyl-Verbindungen (`1,2,3-Trione'), Teil 1, Reaktionsweise von Diazomethan und seinen Derivaten mit 5,5-Dimethylcyclohexan-1,2,3-trion (=`Oxo-dimedon') und verwandten Cyclohexan-1,2,3-trionen
摘要:
Interactions of diazomethane and of its derivatives as typical nucleophiles with cyclic 1,2,3-triones as efficient electrophiles lead to different results: a) formation of oxiranes (C,O insertion under loss of N-2), b) nucleophilic addition yielding diazoaldols, c) formation of ring-enlargement products (C,C insertion under loss of N-2), and d) formation of dioxoles via redox reactions (under loss of N-2). Our results and those of other groups allow us to recognize that the unexpected outcome of the reaction of oxodimedone and several related species is due to a closed-shell diazoaldol formation followed by an open-shell redox reaction leading to dioxoles.
SCHANK, K.;LICK, C., SYNTHESIS, BRD, 1983, N 5, 392-395
作者:SCHANK, K.、LICK, C.
DOI:——
日期:——
Ozonolytic Fragmentation of Phenyliodonium β-Diketonates; A Convenient Synthesis of Unsolvated<i>vic</i>-Triketones
作者:Kurt Schank、Carlo Lick
DOI:10.1055/s-1983-30350
日期:——
Chemie freier, cyclischer vicinaler Tricarbonyl-Verbindungen (`1,2,3-Trione'), Teil 1, Reaktionsweise von Diazomethan und seinen Derivaten mit 5,5-Dimethylcyclohexan-1,2,3-trion (=`Oxo-dimedon') und verwandten Cyclohexan-1,2,3-trionen
Chemistry of Free Cyclic Vicinal Tricarbonyl Compounds (`1,2,3-Triones'). Part 1. Reaction of Diazomethane and Its Derivatives with 5,5-Dimethylcyclohexane-1,2,3-trione (=`Oxo-dimedone') and Related Cyclohexane-1,2,3-triones Interactions of diazomethane and of its derivatives as typical nucleophiles with cyclic 1,2,3-triones as efficient electrophiles lead to different results: a) formation of oxiranes