Synthesis of (E)-nitro olefins by isomerisation of (Z)-nitro olefins with polymer-supported triphenylphosphine
摘要:
We have found that (Z)-nitro olefins or mixtures of (E)- and (Z)-compounds can be converted to the pure (E)-isomers by treatment with catalytic amounts of triethylamine or polymer-bound triphenylphosphine, respectively. (C) 1998 Elsevier Science Ltd. All rights reserved.
Synthesis of (E)-nitro olefins by isomerisation of (Z)-nitro olefins with polymer-supported triphenylphosphine
摘要:
We have found that (Z)-nitro olefins or mixtures of (E)- and (Z)-compounds can be converted to the pure (E)-isomers by treatment with catalytic amounts of triethylamine or polymer-bound triphenylphosphine, respectively. (C) 1998 Elsevier Science Ltd. All rights reserved.
Palladium catalyzed synthesis of tertiary allylamines. Utilization of α-nitro olefins as allylic nitro compounds
作者:Rui Tamura、Koji Hayashi、Yoshiki Kai、Daihei Oda
DOI:10.1016/s0040-4039(01)81459-3
日期:1984.1
Reaction of α-nitro olefins with secondary amines in the presence of palladium(O) catalyst affords allylic amines.
在钯(O)催化剂存在下,α-硝基烯烃与仲胺的反应得到烯丙基胺。
Preparation of polyfunctional nitro olefins and nitroalkanes using the copper-zinc reagents RCu(CN)ZnI
作者:Carole Jubert、Paul Knochel
DOI:10.1021/jo00046a027
日期:1992.9
The addition of the copper-zinc reagents RCu(CN)ZnX to a variety of nitro olefins produces polyfunctional nitroalkanes in high yields. The intermediate zinc or copper nitronates can be directly submitted to a Nef reaction (O3,-78-degrees-C) and converted to polyfunctional ketones in a one-pot procedure. The addition of RCu(CN)ZnX to nitro olefins bearing a leaving group (RSO2, RS) in the beta-position provides pure (E)-nitro olefins in excellent yields. The reaction has been applied for the stereoselective preparation of 1,3-nitrodienes and for a Diels-Alder reaction precursor.
Dornow,A. et al., Chemische Berichte, 1961, vol. 94, p. 67 - 76