Bridging the Final Gap in Stereocontrolled Wittig Reactions: Methoxymethoxy-Armed Allylic Phosphorus Ylides Affording Conjugated Dienes with Highcis Selectivity
sodium amide), 2-alkenyltris(2-methoxymethoxyphenyl)phosphonium salts carrying an allyl, crotyl, or prenyl (3-methyl-2-butenyl) side chain condense with saturated or unsaturated aldehydes to give conjugated dienes with Z/E ratios ranging from 90:10 to > 99:1 and averaging 96:4. Owing to steric congestion, yields are only moderate (on average 41%; extremes 10-79%). The nonvolatile tris(2-methoxymethoxyphenyl)phosphine
A reactivity study of phenyl and ferrocenyl phosphates within the anionic phospho- F ries rearrangement
作者:Marcus Korb、Heinrich Lang
DOI:10.1016/j.inoche.2016.07.017
日期:2016.10
phospho-Fries rearrangements of ferrocenyl/phenyl phosphates P(O)(OFc)n(OPh)3 − n (Fc = Fe(η5-C5H5)(η5-C5H4); n = 0,1,2,3) were investigated. Whereas ferrocenyls solely undergo one rearrangement per reaction step, the number of phenyl-based 1,3-O → C shifts depends on the temperature. This results in different types of otherwise hardly accessible mixed ferrocenyl/phenyl organophosphorus compounds. Detailed
摘要 二茂铁基/苯基磷酸酯 P(O)(OFc)n(OPh)3 − n (Fc = Fe(η5-C5H5)(η5-C5H4); n = 0,1,2 ,3) 进行了调查。虽然二茂铁基在每个反应步骤中仅经历一次重排,但基于苯基的 1,3-O → C 转变的数量取决于温度。这导致了不同类型的二茂铁基/苯基有机磷混合化合物,否则很难获得。对磷酸三苯酯 (n = 0) 的三重重排的详细研究表明,在已知的氧化膦之前,其膦酸酯和次膦酸酯连续形成。
Synthesis, Molecular, and Crystal Structure of Tris(2-carbamoylmethoxyphenyl)phosphine Oxide
作者:T. V. Baulina、I. Yu. Kudryavtsev、A. V. Artem’ev、I. Yu. Bagryanskaya、M. P. Pasechnik、V. K. Brel
DOI:10.1134/s1070363220100059
日期:2020.10
Abstract New tripodal ligand, tris(2-carbamoylmethoxyphenyl)phosphine oxide, has been synthesized via the alkylation of tris(2-hydroxyphenyl)phosphine oxide with chloroacetamide. The ligand structure has been studied by means of IR and NMR (1H, 31P) spectroscopy as well as X-ray diffraction.
Synthesis of precursors to new tripodal phosphine oxide ligands
作者:I. Yu. Kudryavtsev、O. V. Bykhovskaya、I. M. Aladzheva、T. V. Baulina、V. K. Brel’
DOI:10.1134/s1070363217110366
日期:2017.11
A number of precursors of new tripodal ligands was obtained by hydroxyethylation of the starting tris(2-hydroxyphenyl)phosphine oxide, followed by conversion of the resulting tris[2-(2-hydroxyethoxy) phenyl]phosphine oxide to trimesylate. The treatment of the latter with LiBr or NaN3 afforded the corresponding tribromo and triazido derivatives.
Synthesis and coordination properties of new preorganized ligand on the triphenylphosphine oxide platform
作者:I. Yu. Kudryavtsev、T. V. Baulina、M. P. Pasechnik、R. R. Aisin、S. V. Matveev、P. V. Petrovskii、E. E. Nifant’ev
DOI:10.1007/s11172-013-0146-6
日期:2013.4
Tris(2-cyanomethoxyphenyl)phosphineoxide was synthesized by the reaction of tris-(2-hydroxyphenyl)phosphineoxide with chloroacetonitrile. Its coordination properties were studied for the complexation with neodymium(iii) and copper(ii) nitrates using vibrational spectroscopy, NMR, and quantum chemical calculations.
三(2-氰基甲氧基苯基)氧化膦由三-(2-羟基苯基)氧化膦与氯乙腈反应合成。使用振动光谱、核磁共振和量子化学计算研究了其与硝酸钕 (iii) 和铜 (ii) 络合的配位特性。