碳-磷键构建方法的研究进展

含磷有机化合物在药物化学、材料化学、有机合成化学等领域具有广泛应用,如何高效构建碳-磷键成为有机合成化学领域的研究热点。本文介绍了主要的碳-磷键的构建方法,包括传统的合成方法、常规偶联反应、碳-氢键与磷-氢键直接氧化去氢偶联、磷自由基对不饱和键的多米诺反应及不对称碳-磷键偶联反应等,概述每类方法的优缺点,指出该领域研究目前面临的挑战及发展方向。     

中国化学会第八届全国磷化学化工学术讨论会第一轮通知

中国化学会第八届全国磷化学化工学术讨论会将于2009年10月11～13日在天津召开。本届会议由中国化学会、国家自然科学基金委员会主办,南开大学承办。会议主题为"磷在化学、材料及生命科学领域研究、应用     

铱配合物在磷光化学传感器中的应用

由于在生物领域和物联网领域的广泛应用,化学传感器在近期发展迅速.相比于纯有机分子的荧光化学传感器,基于重金属配合物的磷光化学传感器由于发光寿命长,斯托克斯位移大等优点越来越引起人们的广泛关注.重金属铱配合物三线态寿命短,发光效率高而且配合物的发射波长容易受配体的改变而发生变化,因此成为最好的磷光传感器材料之一.本文介绍了铱配合物在磷光化学传感器领域中的应用,具体包括:阳离子传感器、阴离子传感器、氧分子传感器、氨基酸传感器、pH传感器等,并指出了相比于其它磷光化学传感器,基于铱配合物的磷光化学传感器的优势以及目前所存在的问题,最后,对基于铱配合物的磷光化学传感器的研究和发展方向进行了展望.     

基于构建碳-磷键反应的研究进展

含磷有机化合物在医药化学、材料化学、有机合成化学等领域的出色应用,使得如何高效构建碳-磷键成为有机合成化学领域的研究热点。本文就近几十年来发展的碳-磷键的构建方法展开综述：包括传统的合成方法、传统的偶联反应、碳-氢键与磷-氢键直接氧化去氢偶联、磷自由基对不饱和键的多米诺反应及不对称碳-磷键偶联反应等,概述每类方法的优缺点,指出目前面临的挑战及发展方向。     

有机磷化学进展

前言目前有机磷化学已发展成为一门独立的学科,在整个化学领域中占有突出重要的地位,几乎在各个学科的发展中都直接或简接地涉及到了这个关键元素。自20世纪初Michaelis和两个学派就系统地探索了有机磷化合物的研究。到本世纪30年代,Schrader等发现有机磷毒剂与有机磷杀虫剂后,开创了整个新的农药工业,大大促进了有机磷化学的发展。Wittig对羰基化合物转变为烯烃的深入研究,使有机磷化学在有机合成上得到更广泛的应用。近来,不对称磷化合物光学异构体的拆分及具有光学活性的膦作为均相催化剂的应用,磷金属络合物的制备,磷烷化学,磷自由基化学,芳磷的化学     

结晶型磷—多磷钼酸铵的制备及其离子交换性能的研究

本文叙述了结晶型磷—多磷钼酸铵的制备方法，研究了磷—多磷钼酸铵的化学组成，测定了该化合物的离子交换性能，说明多磷酸根部分取代磷酸根所生成的结晶型磷—多磷钼酸铵对铯离子具有良好的离子交换选择性和较高的离子交换容量，是一类新的结晶型无机离子交换剂。     

结晶型磷一多磷钼酸铵的制及其离子交换性能的研究

本文叙述了弗晶型磷－多磷钼酸铵的制备方法，研究了磷－多磷钼酸铵的化学组成，测定了该经合物的离子交换性能，说明多磷酸根部分取代磷酸根所生成的结晶型磷－多磷钼酸铵对铯离子具有良好的离子交换选择性和较高的离子交换容量，是一类新的结晶型无机离子交换剂。     

手性诱导构建磷手性中心不对称合成有机磷功能化合物研究进展

有机磷化学是有机化学和生命科学研究的重要分支,具有磷手性中心的有机磷化合物在医药、农药、材料和不对称合成等研究领域中具有广泛的应用.利用自然界广泛存在的天然手性化合物作为手性诱导试剂,通过相应的化学转化可以高效合成具有光学活性的磷手性有机磷功能化合物.综述了近年来利用薄荷醇、金雀花碱、麻黄碱和碳水化合物等天然产物作为手性诱导试剂,不对称合成磷手性有机磷功能化合物的研究进展.     

磷自由基对不饱和键的双官能化反应的研究进展

有机膦化合物在有机反应、光电材料、阻燃材料以及药物化学等研究领域都具有广泛的用途,因而探索更高效、更绿色的方法实现有机膦化合物的合成是有机膦化学工作者的主要目标之一.通过磷自由基与不饱和化合物的双官能团化反应可以在一步反应中实现含磷杂环以及多环化合物的构建.按磷自由基引发方式的不同,对近年来磷自由基与不饱和化合物的双官能团化反应的研究进展进行了综述.     

磷杂环戊二烯[1,5]-σ键迁移的新进展

磷杂环戊二烯在探索磷化学的研究中发挥了重要的作用,并广泛应用于配位化学、催化和有机光电材料等领域.[1,5]-σ键迁移(以下简称[1,5]迁移)是磷杂环戊二烯的一类重要反应.该迁移主要是由于磷杂环戊二烯弱的芳香性和环外磷上取代基的σ键与环内二烯体的反键轨道存在一定的σ-π*超共轭效应等特性所共同造成的.该反应自发现以来就成为磷杂环戊二烯衍生化的重要和有效手段.主要介绍了近几年来人们利用磷杂环戊二烯[1,5]迁移特性设计与合成新型有机磷化合物和含磷光电材料的研究进展.     

Click反应和多氮化合物手性催化剂

Click化学涉及一系列能够在温和条件下高产率进行的有机反应, 已经被用来构建一些手性有机催化剂. 一些多氮化合物作为手性有机催化剂, 在反应过程中形成多重氢键使反应过渡态得以稳定, 显示出非常好的立体选择性.     

Recent Advances in Imidazoliumyl‐Substituted Phosphorus Compounds

This review aims to highlight the recent developments in the chemistry of selected imidazoliumyl‐substituted phosphorus compounds. The synthetic approaches for their preparation with phosphorus in various oxidation states and coordination environments are discussed. Their intriguing properties and versatile chemistry strongly depends on the bonding motif at the P atoms, which is given special focus.     

Organocatalytic Asymmetric Synthesis of Organophosphorus Compounds

240 Years have passed since the discovery of elemental phosphorus. During that time organophosphorus chemistry has emerged as an interesting and exciting field of research. Recently organophosphorus chemistry has been raised to a new level. Organophosphorus compounds have found applications in asymmetric organocatalysis for the synthesis of optically active compounds of synthetic or biological importance. The aim of this review article is to present recent contributions to this developing field of chemistry and to point out synthetic advantages of methodologies developed so far.     

Ylide-Stabilized Phosphenium Cations: Impact of the Substitution Pattern on the Coordination Chemistry

Although N-heterocyclic phosphenium (NHP) cations have received considerable research interest due to their application in organocatalysis, including asymmetric synthesis, phosphenium cations with other substitution patterns have hardly been explored. Herein, the preparation of a series of ylide-substituted cations of type [YPR]⁺ (with Y=Ph₃PC(Ph), R=Ph, Cy or Y) and their structural and coordination properties are reported. Although the diylide-substituted cation forms spontaneous from the chlorophosphine precursor, the monoylidylphosphenium ions required the addition of a halide-abstraction reagent. The molecular structures of the cations reflected the different degrees of electron donation from the ylide to the phosphorus center depending on the second substituent. Molecular orbital analysis confirmed the stronger donor properties of the ylide systems compared to NHPs with the mono-ylide substituted cations featuring a more pronounced electrophilicity. This was mirrored by the reaction of the cations towards gold chloride, in which only the diylide-substituted cation [Y₂P]⁺ formed the expected LAuCl]⁺ complex, while the monoylide-substituted compounds reacted to the chlorophosphine ligands by transfer of the chloride from gold to the phosphorus center. These results demonstrate the tunability of ylide-functionalized phosphorus cations, which should allow for further applications in coordination chemistry in the future.     

Asymmetric catalysis as a method for the synthesis of chiral organophosphorus compounds

This review discusses methods for the metallo-, organo- and biocatalytic asymmetric synthesis of chiral organophosphorus compounds with many applications in stereoselective synthesis with references to updated literature reports as well as the author’s original research. Asymmetric catalytic hydrogenation and reduction with chiral organometallic complexes, together with actively used asymmetric organocatalytic versions of various reactions enable us to synthesize chiral organophosphonates and phosphinates with high enantioselectivity and purity. Asymmetric catalysis is also an effective tool to realize some classic reactions of phosphorus chemistry in a stereospecific manner.     

超分子有机膦大环化合物研究进展

有机膦大环化合物是伴随着大环化学的出现而发展起来的．它们不仅具有多变的结构而且非常稳定;不仅能够包结客体分子,还可以与许多过渡金属形成稳定的配位化合物,在主客体化学以及金属有机催化领域中受到人们的广泛关注．由于其独特的性质,有机膦大环化合物在超分子化学的发展中具有重要的地位．本文主要介绍了近些年有机膦大环化合物研究的新进展及其在超分子化学中的应用．     

Oligosilane‐ and Oligosiloxane‐bridged Phosphines – Synthesis,Structures, and Metalation

The range of molecular silicon phosphorus compounds has been extended by some new species containing oligosilane ((R₂Si)_n; n ≥ 2) or oligosiloxane ((R₂SiO)_mSiR₂; m ≥ 1) fragments bound to phosphorus atoms. Primary and secondary compounds of these types allow for the synthesis of metal derivatives. Such metalated species usually form oligomers and exhibit a versatile structural chemistry with cyclic, polycyclic, and cage‐like patterns. The main results obtained in the field of oligosilane‐ and oligosiloxane‐bridged phosphines will be presented below and the structures of the metal derivatives will be discussed. Moreover, the synthesis of an inorganic ligand on the basis of siloxane‐bridged phosphines will be presented. This compound opens up a new chapter in host‐guest chemistry.     

Some Advances in the Inorganic Chemistry of Bromine

Recent advances in the chemistry of bromine and its inorganic compounds are covered under the headings of technology, properties and reactions, liquid bromine as an inorganic solvent, analysis, and new or newly studied compounds. Much of what is new is bromine chemistry is characteristic also of what is new in inorganic chemistry as a whole. That is, more detailed information about compounds and reactions is becoming available from the application of new instrumental and theoretical techniques.     

The First Synthesis of the Sterically Encumbered Adamantoid Phosphazane P4(NtBu)6: Enabled by Mechanochemistry

All reported attempts to synthesize the tert‐butyl‐substituted adamantoid phosph(III)azane P₄(N^tBu)₆ have failed, leading to the classification of this molecule as inaccessible and a literature example of steric control in chemistry of phosphorus‐nitrogen compounds. We now demonstrate that this structure is readily accessible by a solvent‐free mechanochemical milling approach, highlighting the importance of mechanochemical reaction environments in evaluating chemical reactivity.     

低配位有机磷化学研究概况

长期以来,有机磷化学研究的核心内容主要集中在σ3和σ4的有机磷化合物及其衍生物方面,而低配位的有机磷化合物的研究则远远落后.本文简要综述了目前低配位的有机磷化合物σ1,λ1-亚膦烯、σ1,λ3-膦炔、σ2,λ3-膦烯和σ2,λ3-膦杂苯研究的最新进展,包括它们的合成及其在均相催化和材料等方面的应用.