Sequential Acylation/Silylation/Hetero‐Claisen Rearrangement of Nitroalkanes for the Synthesis of Protected Hydroxyoxime Derivatives
作者:Yulia A. Antonova、Sema L. Ioffe、Alexey Yu. Sukhorukov、Andrey A. Tabolin
DOI:10.1002/ejoc.202100469
日期:2021.6.14
One-pot acylation-silylation sequence was developed for the synthesis of protected hydroxyoximes from aliphatic nitro compounds. Procedure is characterized by wide substrate scope for nitro compounds, acylating and silylating agents.
Solvent-Free Henry and Michael Reactions with Nitroalkanes Promoted by Potassium Carbonate as a Versatile Heterogeneous Catalyst
作者:Giovanna Bosica、Kurt Polidano
DOI:10.1155/2017/6267036
日期:——
The use of a simple weak inorganicbase such as potassium carbonate facilitated the formation of carbon-carbon bonds through both the Henry and the Michael reactions with nitrocompounds. The application of this catalyst under environmentally friendly solventless heterogeneous conditions gave satisfactory to good yields of β-nitroalcohols, involving aliphatic and aromatic starting materials, as well
Tandem double acylation/[3,3]-rearrangement of aliphatic nitro compounds: a route to α-oxygenated oxime derivatives
作者:Yulia A. Antonova、Yulia V. Nelyubina、Alexey Yu. Sukhorukov、Sema L. Ioffe、Andrey A. Tabolin
DOI:10.1039/c9ob01005j
日期:——
A new tandem double acylation/rearrangement reaction of nitro compounds is described. It has a broad substrate scope allowing the mild and efficient synthesis of α-acyloxy oxime esters in high yields and regioselectivity. According to the obtained data, the mechanism for transformation was proposed. The utility of the obtained α-hydroxy oxime esters was demonstrated.
Synthesis of γ-Nitro Aliphatic Methyl Esters Via Michael Additions Promoted by Microwave Irradiation
作者:Jaime Escalante、Francisco Díaz-Coutiño
DOI:10.3390/molecules14041595
日期:——
A simple and efficient protocol has been developed for the direct synthesis of γ-nitrobutyric acid methyl esters under microwave irradiation. This methodology reduces reaction times from days to minutes, compared to conventional conditions. Additionally, these conditions increased yields and provided cleaner reactions.