Synthesis of α-(Nitroaryl)benzylphosphonates via Oxidative Nucleophilic Substitution of Hydrogen in Nitroarenes
作者:Mieczysław Ma̧kosza、Daniel Sulikowski
DOI:10.1021/jo900204e
日期:2009.5.15
Carbanions of diethyl benzylphosphonate and diethyl 1-phenylethylphosphonate add to nitroarenes to form relatively long-lived σH adducts that can be oxidized to products of oxidative nucleophilic substitution of hydrogen. By variation of the conditions, o- and p-nitroarylated derivatives of the starting phosphonates can be synthesized regioselectively. It has been proven that addition of carbanions
苄基膦酸二乙酯和二乙基-1- phenylethylphosphonate的添加到硝基芳烃的碳负离子,以形成相对长寿命σ ħ可被氧化氢的氧化亲核取代的产品加合物。通过改变条件,可以选择性地合成起始膦酸酯的邻和对硝基芳基化衍生物。它已被证明,加入二苄基的碳负离子的和二1-phenylethylphosphonate到硝基芳烃是一个快速的过程和相应的σ ħ加合物几乎定量形成。