Studies on Organophosphorus Compounds, 53: A New Procedure for the Synthesis of 1-Alkyl or 1-Aryl-1-hydroxy-2-nitroethylphoshonates under PTC Conditions
Studies on Organophosphorus Compounds, 53: A New Procedure for the Synthesis of 1-Alkyl or 1-Aryl-1-hydroxy-2-nitroethylphoshonates under PTC Conditions
A series of dialkyl 1-alkyl- or 1-aryl-1-hydroxy-2-nitroethyl-phosphonates and 1-hydroxy-1-(nitromethyl)alkylphosphonates was prepared by nucleophilic addition of nitromethane to dialkyl acylphosphonates in the presence of potassium carbonate and tetrabutylammonium bromide.
STUDIES ON ORGANOPHOSPHORUS COMPOUNDS 102. A CONVENIENT STEREOSPECIFIC SYNTHESIS OF DIALKYL 1-ALKYL(ARYL)-2-NITROETH-1-ENYLPHOSPHONATES
作者:Qun Yuan、Peng He、Chengye Yuan
DOI:10.1080/10426509708040501
日期:1997.8.1
Abstract Dialkyl 1-alkyl(aryl)-2-nitroeth-1-enylphosphonates were prepared by treatment of dialkyl 1-alkyl(aryl)-1-hydroxyl-2-nitroalkylphosphonates with thionyl chloride and pyridine. The dehydration process underwent stereospecifically providing exclusively the E-isomers. An E2 reaction mechanism was suggested.
摘要 用亚硫酰氯和吡啶处理1-烷基(芳基)-1-羟基-2-硝基烷基膦酸二烷基酯,制备了1-烷基(芳基)-2-硝基乙基-1-烯基膦酸二烷基酯。脱水过程进行立体定向,仅提供 E 异构体。提出了 E2 反应机制。