Studies on Phosphoroheterocycle Chemistry I: A Facile Synthesis of New Tricyclic Phosphoroheterocycles 1,3,2-Oxazaphospholidino(or Oxazaphosphorino)[3,2-a][1,3,2]benzodiazaphosphorines
作者:Sheng Lou Deng、Dong Zhi Liu、Jun Min Huang、Ru Yu Chen
DOI:10.1055/s-2001-16754
日期:——
Reaction procedures have been developed for the preparation of structurally different phosphoroheterocyclic compounds. Firstly, the treatment of PCl3 with functionalized compound N-ethyl-2-(β-hydroxyethyl)aminobenzamide gave chlorinated phosphoroheterocycle, 1-(2-chloroethyl)-3-ethyl-2,3-dihydro-1,3,2-benzo-diazaphosphorin-4(1H)-one 2-oxide. Secondly, novel tricyclic phosphoroheterocycles, 1,3,2-oxazaphospholidino(or oxazaphosphorino)[3,2-a][1,3,2]benzodiazaphosphorines, have been conveniently synthesized by cyclization of tris(diethylamino)phosphine with 2-(N-(β or γ-hydroxyalkyl)aminobenzamides. Finally, the reaction of 2-(N-ethoxycarbonylmethyl)amino-N-(2’-hydroxyethyl)-benzamide with P(NEt2)3 afforded five-membered phosphoro-heterocycle, 3-(2’-N-ethoxycarbonylmethylamino)benzoyl-2-diethylamino-1,3,2-oxazaphospholidine-2-sulfide. Additionally, the preliminary bioassays showed that several title compounds possessed herbicidal activity to some extent.
已开发出反应程序,用于制备结构各异的磷杂环化合物。首先,将PCl3与功能化化合物N-乙基-2-(β-羟乙基)氨基苯甲酰胺处理,得到氯化的磷杂环,即1-(2-氯乙基)-3-乙基-2,3-二氢-1,3,2-苯并二氮杂磷-4(1H)-酮2-氧化物。其次,通过三(二乙基氨基)膦与2-(N-(β或γ-羟基烷基)氨基苯甲酰胺)的环化反应,方便地合成了新型三环磷杂环化合物,即1,3,2-噁唑磷杂二(或噁唑磷杂)-[3,2-a][1,3,2]苯并二氮杂磷化物。最后,2-(N-乙氧羰基甲基)氨基-N-(2’-羟乙基)苯甲酰胺与P(NEt2)3反应,得到五元磷杂环,即3-(2’-N-乙氧羰基甲基氨基)苯甲酰-2-二乙氨基-1,3,2-噁唑磷杂二硫化物。此外,初步生物测定显示,几种标题化合物在一定程度上具有除草活性。