作者:V. M. Berestovitskaya、N. A. Anisimova、A. T. Gubaidullin、I. A. Litvinov、G. A. Berkova、N. G. Makarova
DOI:10.1134/s107036320907007x
日期:2009.7
Reactions of 1,3-dipolar cycloaddition of bis(2-chloroethyl)-2-nitroethenylphosphonate to methyl and ethyl diazoacetates proceed with the formation of a mixture of regioisomers of phosphorylated nitropyrazoline carboxylates that under the reaction conditions undergo isomeric transformations and denitration and afford a mixture of Δ1- and Δ2-pyrazoline- and pyrazolecarboxylates. Structures of the synthesized
双(2-氯乙基)-2-硝基乙烯基膦酸酯的1,3-偶极环加成反应生成重氮乙酸甲酯和重氮乙酸乙酯,随后形成磷酸硝基吡唑啉羧酸酯的区域异构体混合物,该混合物在反应条件下进行异构转化和脱硝,得到Δ的混合物1和Δ - 2 -pyrazoline-和pyrazolecarboxylates。通过IR和1 H,31 P NMR光谱法以及部分通过X射线结构分析来研究合成物质的结构。