Direct Synthesis of Keto Nitroaliphatics via Retro-Henry Reaction of Cyclic 2-Nitroalcohols by Anhydrous Copper Sulfate Adsorbed on Silica Gel. A Short Synthesis of (±)-Phoracantholide I
A method for the oxidativenitration of alkenes using a combination of tert-butyl nitrite and molecular oxygen to give β-nitro alcohols and their nitrate derivatives has been developed. The present reaction provides a practical method for the synthesis of nitro compounds because of the mild reaction conditions, the use of inexpensive reagents and a simple experimental procedure.
Direct Synthesis of Keto Nitroaliphatics via Retro-Henry Reaction of Cyclic 2-Nitroalcohols by Anhydrous Copper Sulfate Adsorbed on Silica Gel. A Short Synthesis of (±)-Phoracantholide I
作者:Anil K. Saikia、Monoj J. Hazarika、Nabin C. Barua、Maitreyee Sarma Bezbarua、Ram P. Sharma、Anil C. Ghosh
DOI:10.1055/s-1996-4318
日期:1996.8
It has been observed that anhydrous CuSO4 adsorbed on silica gel effects the C-C bond cleavage between the hydroxy group and the nitro group of 2-nitroalcohols. In the case of 2-nitrocyclohexanols, the products are RCO(CH2)4CH2NO2 where R is alkyl, aryl, etc. This strategy has been applied for a short synthesis of (±)-phoracantholide I.
Reductive Intramolecular Henry Reactions Induced by Stryker’s Reagent
作者:Pauline Chiu、Wing Chung
DOI:10.1055/s-2004-836044
日期:——
Conjugate reductions of nitroalkenes by Stryker's reagent are ensued by intramolecular aldol reactions to produce β-nitroalcohols in good yield, constituting the first examples of reductive Henryreactions.