Nucleophilic replacement of the nitro group in E-2,4,6-trinitrostilbenes by O- and S-nucleophiles. Synthesis of 2-aryl-4-X-6-nitrobenzo[b]thiophenes
作者:O. Yu. Sapozhnikov、V. V. Mezhnev、M. D. Dutov、V. V. Kachala、N. A. Popov、S. A. Shevelev
DOI:10.1007/s11172-005-0309-1
日期:2005.3
nucleophilic substitution for the nitro group in E-2,4,6-trinitrostilbenes under the action of arene- and alkanethiols or phenols in the presence of inorganic bases was studied. Products of o-NO2 group replacement in the presence of PhCH2SH were used to obtain earlier unknown 2-aryl-4,6-dinitrobenzo[b]thiophenes and their 3-chloro derivatives. In these fused heterocycles, the 4-NO2 group can be selectively displaced
研究了在无机碱存在下在芳烃和烷硫醇或酚的作用下,E-2,4,6-三硝基二苯乙烯中硝基的亲核取代方向。在 PhCH2SH 存在下,o-NO2 基团置换的产物用于获得早期未知的 2-芳基-4,6-二硝基苯并 [b] 噻吩及其 3-氯衍生物。在这些稠合杂环中,4-NO2 基团可以被亲核试剂选择性取代。