通过使PhPCl 2与Grignard试剂和元素硒反应,可以得到P-手性烷基或芳基苯基膦基硒代氯化物。P也通过处理的PCl得到-手性二烷基氯化物3与两个不同的格氏试剂和元素硒。通过X射线分子结构分析确定氯化物的结构。P-带有P的手性膦硫代人亚麻油酸酯Se的双键是通过用碱金属醇盐和硫属元素化物处理氯化物而合成的,而带有P-Se单键的是通过依次用氢氧化钠,硫化物或硒化物和烷基碘对氯化物进行处理而获得的。酯的X射线分子结构分析表明,它们采用了gauche构象。计算结果支持观察到的构象偏好。对模型化合物的自然键轨道分析表明,在这些化合物中,两种类型的非键轨道相互作用(n E ' →σ* P = E和n E →σ* P - E ')很重要。实验77之间观察到线性相关酯中的Se NMR化学位移或P-Se键的偶联常数以及模型化合物的计算出的P-Se键长度。
通过使PhPCl 2与Grignard试剂和元素硒反应,可以得到P-手性烷基或芳基苯基膦基硒代氯化物。P也通过处理的PCl得到-手性二烷基氯化物3与两个不同的格氏试剂和元素硒。通过X射线分子结构分析确定氯化物的结构。P-带有P的手性膦硫代人亚麻油酸酯Se的双键是通过用碱金属醇盐和硫属元素化物处理氯化物而合成的,而带有P-Se单键的是通过依次用氢氧化钠,硫化物或硒化物和烷基碘对氯化物进行处理而获得的。酯的X射线分子结构分析表明,它们采用了gauche构象。计算结果支持观察到的构象偏好。对模型化合物的自然键轨道分析表明,在这些化合物中,两种类型的非键轨道相互作用(n E ' →σ* P = E和n E →σ* P - E ')很重要。实验77之间观察到线性相关酯中的Se NMR化学位移或P-Se键的偶联常数以及模型化合物的计算出的P-Se键长度。
and P-methylseleno-P-methylthiophosphonium triflate were determined by X-ray molecular structure analyses. These salts exhibited monomeric structures, and the central phosphorus atoms adopted tetrahedral structures. Alkylation of the ammonium salts selectively gave phosphinoselenothioic acid Se-alkyl esters, whereas acylation of the salts preferentially gave S-acyl products. Protonation of the salts
Optically active P-chiral phosphinoselenoic amides: stereochemical outcome at the P-stereogenic center in the synthesis of these substances and their characterization
作者:Tsutomu Kimura、Toshiaki Murai
DOI:10.1016/j.tetasy.2005.09.028
日期:2005.11
absolute configurations of the phosphinoselenoic amides were determined by X-ray molecular structure analyses. Optically active P-chiral phosphinoselenoic chlorides were also reacted with optically active lithium amide. The reactionproceeded predominantly with inversion of configuration, but also involved retention of stereochemistry at the phosphorus atom during the substitutionreaction.
<i>P</i>-Chiral Phosphinoselenoic Chlorides and Optically Active<i>P</i>-Chiral Phosphinoselenoic Amides: Synthesis and Stereospecific Interconversion with Extrusion and Addition Reactions of the Selenium Atom
作者:Tsutomu Kimura、Toshiaki Murai
DOI:10.1246/cl.2004.878
日期:2004.7
chlorides and the first optically active P-chiral phosphinoselenoic amides was successfully achieved. Stereospecific interconversion with the extrusion of selenium atomfrom optically active phosphinoselenoic amides and the addition of seleniumatom to optically active aminophosphines were also investigated.
Asymmetric phosphinoselenoic chloride and method for producing the same
申请人:President of Gifu University
公开号:EP1449845B1
公开(公告)日:2006-09-13
<i>P</i>-Chiral Phosphinoselenoic Chlorides and Phosphinochalcogenoselenoic Acid Esters: Synthesis, Characterization, and Conformational Studies
作者:Tsutomu Kimura、Toshiaki Murai
DOI:10.1021/jo0484979
日期:2005.2.1
phosphinochalcogenoselenoic acid esters bearing a PSe double bond were synthesized by treating the chlorides with alkali metal alkoxide and chalcogenolates, whereas those bearing a P−Se single bond were obtained by sequential treatment of the chlorides with sodium hydroxide, sulfide or selenide, and alkyl iodides. X-ray molecular structure analyses of esters showed that they adopted gauche conformations. The computational
通过使PhPCl 2与Grignard试剂和元素硒反应,可以得到P-手性烷基或芳基苯基膦基硒代氯化物。P也通过处理的PCl得到-手性二烷基氯化物3与两个不同的格氏试剂和元素硒。通过X射线分子结构分析确定氯化物的结构。P-带有P的手性膦硫代人亚麻油酸酯Se的双键是通过用碱金属醇盐和硫属元素化物处理氯化物而合成的,而带有P-Se单键的是通过依次用氢氧化钠,硫化物或硒化物和烷基碘对氯化物进行处理而获得的。酯的X射线分子结构分析表明,它们采用了gauche构象。计算结果支持观察到的构象偏好。对模型化合物的自然键轨道分析表明,在这些化合物中,两种类型的非键轨道相互作用(n E ' →σ* P = E和n E →σ* P - E ')很重要。实验77之间观察到线性相关酯中的Se NMR化学位移或P-Se键的偶联常数以及模型化合物的计算出的P-Se键长度。