Oxidation of Nitrobenzylic Carbanions with Dimethyldioxirane. New Synthesis of Quinomethanes and Nitrobenzylic Carbinols. First Examples of Methylation of Carbanions with Dimethyldioxirane
The reaction of nitrobenzylic carbanions with dimethyldioxirane (DMD) results in oxidation at the carbanion center or at the nitronate center to give nitrobenzylic carbinols or quinomethanes, respectively. Minor amounts of the methylation products are also formed. Both of these processes were observed for carbanions of (p-nitroaryl)diarylmethanes. The outcome of the oxidation process is very sensitive
Conversion of 1-(o-Nitroaryl)methyl p-Tolyl Sulfones into Anthranilic Ester Analogues.
作者:Mieczysław Mąkosza、Zbigniew Wróbel、Carl E. Olsen、Birgitte R. Rassing、Jo Klaveness、Frode Rise、Kjell Undheim、Connie N. Rosendahl、Monika Haugg、Nathalie Trabesinger-Rüf、Elmar G. Weinhold
DOI:10.3891/acta.chem.scand.50-0646
日期:——
Makosza, Mieczyslaw; Ostrowski, Stanislaw, Journal of the Chemical Society. Perkin transactions II, 1991, p. 1093 - 1097
作者:Makosza, Mieczyslaw、Ostrowski, Stanislaw
DOI:——
日期:——
Vicarious nucleophilic substitution of hydrogen in nitro-1,6-methano[10]annulenes
作者:S. Ostrowski、R. J. Moritz、B. Mudryk
DOI:10.1007/bf00813207
日期:1995.4
The 2- and 3-nitro-1,6-methano[10]annulenes and their 11,11-difluoro derivatives react with carbanions bearing leaving groups at the carbanionic center according to the Vicarious Nucleophilic Substitution of Hydrogen (VNS) scheme. The analogy between corresponding annulenes and naphthalenes with respect to reactivity is discussed.