4-(tert-butyldiphenylsilyloxy)butyltriphenylphosphonium bromide

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 4-(tert-butyldiphenylsilyloxy)butyltriphenylphosphonium bromide
• 英文别名: 4-(tert-butyldiphenylsilyloxy)butyl-1-phosphonium bromide；4-[Tert-butyl(diphenyl)silyl]oxybutyl-triphenylphosphanium;bromide
• 化学式: Br*C₃₈H₄₂OPSi
• 分子量: 653.714
• InChiKey: AAKCSPYTDMTKRL-UHFFFAOYSA-M

计算性质

• 辛醇/水分配系数(LogP)：
  4.34
• 重原子数：
  42
• 可旋转键数：
  12
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.21
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  4-(tert-butyldiphenylsilyloxy)butyltriphenylphosphonium bromide 在 间氯过氧苯甲酸 、 lithium hexamethyldisilazane 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 19.5h， 生成
  参考文献：
  名称：

  阴离子-(π)n-π催化胶束

  摘要：

  阴离子-(π) n -π 催化胶束的引入扩大了与阴离子-π 催化相容的系统催化剂的集合，具有丰富的普遍重要性的主题。他们感兴趣的是在水中实现阴离子-π催化、阴离子-(π) n -π催化和阴离子-(π) n -π自催化。安装超分子化学经典来控制有限胶束空间内的底物结合和定位，以获得涌现的特性。

  DOI：

  10.1002/anie.202310393

文献信息

• Mechanism of the Cobalt Oxazoline Palladacycle (COP)-Catalyzed Asymmetric Synthesis of Allylic Esters
  作者：Jeffrey S. Cannon、Stefan F. Kirsch、Larry E. Overman、Helen F. Sneddon

  DOI：10.1021/ja106688j

  日期：2010.11.3

  labeling experiments establishing that the reaction proceeds in an overall antarafacial fashion; (c) secondary deuterium kinetic isotope effects that suggest substantial rehybridization at both C1 and C3 in the rate-limiting step; and (d) DFT computational studies (B3-LYP/def2-TZVP) that provide evidence for bidentate substrate-bound intermediates and an anti-oxypalladation/syn-deoxypalladation pathway

  由钯 (II) 配合物 [COP-OAc](2) 催化的 (Z)-烯丙基三氯乙酰亚胺酯的催化对映选择性 S(N)2' 置换是一种广泛用于手性支链烯丙基酯不对称合成的方法。报告了各种旨在阐明催化机制的性质及其速率和对映体决定步骤的实验。主要发现包括以下内容：(a) 证明存在多种桥接二钯配合物并构成 COP 催化剂的静止状态（但是，单体钯 (II) 配合物可能参与催化循环）；(b) 确定反应以整体反面方式进行的标记实验；(c) 二次氘动力学同位素效应，表明在限速步骤中 C1 和 C3 处发生了大量再杂交；(d) DFT 计算研究 (B3-LYP/def2-TZVP)，为双齿底物结合中间体和抗氧化钯化/syn-deoxypalladation 途径提供证据。这些结果与一种新机制一致，在该机制中，亚胺酸氮螯合形成阳离子钯 (II) 中间体，激活烯烃以在对映体决定步骤中受到外部羧酸盐的攻击。酰氧基钯
• The stereochemical course of bromoetherification of enynes
  作者：D. Christopher Braddock、Roshni Bhuva、Yolanda Pérez-Fuertes、Rebecca Pouwer、Craig A. Roberts、Andrea Ruggiero、Elaine S. E. Stokes、Andrew J. P. White

  DOI：10.1039/b800054a

  日期：——

  Enynes undergo stereoselective syn intramolecular bromoetherification; the stereochemical course of the reaction was elucidated by X-ray crystallographic studies and by stereospecific synthesis of authentic bromoallenes.

  烯炔经历立体选择性合成分子内溴醚化；通过X射线晶体学研究和通过正构溴丙烯的立体有择合成，阐明了该反应的立体化学过程。
• Synthesis of Poison-Frog Alkaloids 237D, 207A, and Two Congeners of 235B' for Evaluation to Inhibitory Effect of Nicotinic Acetylcholine Receptors
  作者：Naoki Toyooka、Masashi Kawasaki、Hideo Nemoto

  DOI：10.1248/cpb.53.555

  日期：——

  Enantioselective synthesis of the poison-frog alkaloids 237D, 207A, and two congeners of 235B′ has been achieved. The absolute stereochemistry of 237D was determined to be 5S, 8S, 9R by the present synthesis.

  毒蛙生物碱237D、207A和235B′的两个同系物的对映选择性合成已经实现。通过目前的合成，237D的绝对立体化学结构被确定为5S, 8S, 9R。
• Structure Determination of an Endogenous Sleep-Inducing Lipid, <i>cis</i>-9-Octadecenamide (Oleamide):  A Synthetic Approach to the Chemical Analysis of Trace Quantities of a Natural Product
  作者：Benjamin F. Cravatt、Richard A. Lerner、Dale L. Boger

  DOI：10.1021/ja9532345

  日期：1996.1.1

  The pursuit of endogenous sleep-inducing substances has been the focus of an extensive, complicated body of research. Several compounds, including Delta-sleep-inducing peptide and prostaglandin D-2, have been suggested to play a role in sleep induction, and yet, the molecular mechanisms of this physiological process remain largely unknown. In recent efforts, the cerebrospinal fluid of deep-deprived cats was analyzed in search of compounds that accumulated during sleep deprivation. An agent with the chemical formula C18H35NO was found to cycle with sleep-wake patterns, increasing in concentration with sleep deprivation and decreasing in amount upon recovery sleep. Since the material was generated in minute quantities and only under the special conditions of sleep deprivation, efforts to isolate sufficient material for adequate characterization, structure identification, and subsequent detailed evaluation of its properties proved unrealistic. With the trace amounts of the impure endogenous compound available, extensive MS studies on the agent were completed, revealing key structural features of the molecule including two degrees of unsaturation, a long alkyl chain, and a nitrogen substituent capable of fragmenting as ammonia. Additionally, HPLC traces suggested a weak UV absorbance for the unknown material. With this data in hand and encouraged by the relatively small size of the molecule, MW = 281, a synthetic approach toward the structural identification of the natural compound was initiated. Herein, we report the full details of the synthesis and comparative characterization of candidate structures for this endogenous agent that led to the unambiguous structural correlation with synthetic cis-9-octadecenamide.
• Synthesis of (2 S ,3 R ,11 S ,12 R ,2‴ R ,11‴ S ,12‴ R )-plakoside A, a prenylated and immunosuppressive marine galactosphingolipid with cyclopropane-containing alkyl chains
  作者：Masanori Seki、Akihiro Kayo、Kenji Mori

  DOI：10.1016/s0040-4039(01)00175-7

  日期：2001.3

  Plakoside A (1) is a prenylated galactosphingolipid isolated from the marine sponge Plakoartis simplex and is strongly immunosuppressive without cytotoxicity. (2S,3R,11S,12R,2"'R,11"'S, 12'''R)-plakoside A (1) was synthesized by combining sphingosine part 16, alpha -hydroxy acid part 24 and prenylated sugar part 29. (C) 2001 Elsevier Science Ltd. All rights reserved.