3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)butanal | 1159096-03-3

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 硼酸衍生物
• 英文名称: 3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)butanal
• 英文别名: 3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)butanal
• CAS: 1159096-03-3
• 化学式: C₁₀H₁₉BO₃
• 分子量: 198.07
• InChiKey: KIYGQAOAFZYIBD-UHFFFAOYSA-N

物化性质

• 沸点：
  229.7±23.0 °C(predicted)
• 密度：
  0.94±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.06
• 重原子数：
  14
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.9
• 拓扑面积：
  35.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  巴豆醛 、 联硼酸频那醇酯 在 [Cu(1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene)(methoxide)] 甲醇 作用下， 以 四氢呋喃 为溶剂， 生成 3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)butanal
  参考文献：
  名称：

  The selective catalytic formation of β-boryl aldehydes through a base-free approach

  摘要：

  (NHC)Cu(I)配合物是在无碱条件下，将硼单元选择性地添加到α,β-不饱和醛的β-位点上的新策略中的关键。

  DOI：

  10.1039/b901767d

文献信息

• β-Borylation of conjugated carbonyl compounds with silylborane or bis(pinacolato)diboron catalyzed by Au nanoparticles
  作者：Marios Kidonakis、Michael Fragkiadakis、Manolis Stratakis

  DOI：10.1039/d0ob01806f

  日期：——

  Conjugated aldehydes and ketones undergo reaction with Me2PhSiBpin (pin: pinacolato) catalyzed by Au nanoparticles supported on TiO2 forming exclusively the β-borylation products, via the intermediate formation of the labile silaboration adducts. This chemoselectivity pathway is complementary to the so far known analogous reaction catalyzed by other metals, where β-silylation occurs instead. β-Borylation

  共轭醛和酮与Me 2 PhSiBpin（pin：pinacolato）发生反应，这是通过不稳定形成的硅烷化加合物的中间形成，而Au纳米颗粒负载在TiO 2上，仅形成β-硼化产物。这种化学选择性途径是迄今为止由其他金属催化的类似反应的补充，在其他类似反应中发生了β-甲硅烷基化。在相同的反应条件下，在各种共轭羰基化合物中，pinBBpin也会发生β-硼化反应，这些共轭羰基化合物包括在其尝试的Au催化的合成中没有反应性的酯和酰胺。
• Tandem β-Boration/Arylation of α,β-Unsaturated Carbonyl Compounds by Using a Single Palladium Complex To Catalyse Both Steps
  作者：Amadeu Bonet、Henrik Gulyás、Igor O. Koshevoy、Francisco Estevan、Mercedes Sanaú、M. Angeles Úbeda、Elena Fernández

  DOI：10.1002/chem.200903095

  日期：——

  Diphenyl(3‐methyl‐2‐indolyl)phosphine (C9H8NPPh2, 1) gives stable dimeric palladium(II) complexes that contain the phosphine in P,N‐bridging coordination mode. On treating 1 with [Pd(O2CCH3)2], the new complexes [Pd(μ‐C9H7NPPh2)(NCCH3)]2 (2) or [Pd(μ‐C9H7NPPh2)(μ‐O2CCH3)]2 (3) were isolated, depending on the solvent used, acetonitrile or toluene, respectively. Further reaction of 3 with the ammonium

  二苯基（3-甲基-2-吲哚基）膦（C 9 ħ 8 NPPh 2，1包含在P中的膦）给出稳定二聚体钯（II）络合物，N-桥接配位模式。上处理1与[钯（O 2 CCH 3）2 ]，新的配合物[钯（μ-C 9 H ^ 7 NPPh 2）（NCCH 3）] 2（2）或[钯（μ-C 9 H ^ 7 NPPh 2）（μ-O 2 CCH 3）] 2（3分别根据所用溶剂，乙腈或甲苯进行分离。进一步反应3与铵盐1导致一个羧酸酯配体的替代，得到[钯（μ-C 9 H ^ 7 NPPh 2）3（μ-O 2 CCH 3）]（4），其中，所述双金属单元通过三个C键合的9 ħ 7 NPPh 2 -基团和一个羧酸基团。使用这种方法，[钯2（μ-C 6 H ^ 4 PPH 2）2（μ-C 9ħ 7 NPPh 2）（μ-O 2 CCX 3）]（X = H（7）; X = F（8））得自合成的邻-metalated化合物[钯（C
• One-Pot Three-Component Highly Selective Synthesis of Homoallylboronates by Using Metal-Free Catalysis
  作者：Ismail Ibrahem、Palle Breistein、Armando Córdova

  DOI：10.1002/chem.201103572

  日期：2012.4.23

  Metal‐free selectivity: The first metal‐free one‐pot three‐component highly chemo‐ and regioselective catalytic synthesis of homoallylboranes using simple N‐heterocyclic carbenes (NHC) and amines is presented. The catalytic reaction between B2(pin)2, α,β‐unsaturated aldehydes and 2‐(triphenylphosphoranylidene)acetate esters proceeds through a catalytic metal‐free β‐boration/Wittig cascade sequence

  无金属的选择性：介绍了使用简单的N-杂环卡宾（NHC）和胺类进行的首个无金属的单锅三组分高化学和区域选择性催化合成烯丙烯酮的方法。B 2（pin）2，α，β-不饱和醛与2-（三苯基膦亚基）乙酸酯之间的催化反应通过无催化的β-硼化/ Wittig级联序列进行（参见方案）。
• β-Boration of α,β-unsaturated carbonyl compounds in ethanol and methanol catalyzed by CCC-NHC pincer Rh complexes
  作者：Sean W. Reilly、Gopalakrishna Akurathi、Hannah K. Box、Henry U. Valle、T. Keith Hollis、Charles Edwin Webster

  DOI：10.1016/j.jorganchem.2015.11.010

  日期：2016.1

  Quantitative beta-boration of alpha, beta-unsaturated carbonyl compounds was achieved utilizing the eco-friendly solvent EtOH along with MeOH at room temperature in 1 h, by a CCC-NHC pincer Rh complex mixture. Substrates with beta-substituents were successfully converted yielding challenging, quaternary C-B bonds. The air-and water-stable pre-catalyst A, identified as a mixture of iodo and chloro CCC-NHC pincer Rh amine complexes, was evaluated for catalytic activity. This report is the first example of a pincer Rh complex demonstrating catalytic activity in a 1,4-addition at room temperature. (C) 2015 Elsevier B.V. All rights reserved.
• Structure and Reactivity of a Preactivated sp²–sp³ Diboron Reagent: Catalytic Regioselective Boration of α,β-Unsaturated Conjugated Compounds
  作者：Ming Gao、Steven B. Thorpe、Christian Kleeberg、Carla Slebodnick、Todd B. Marder、Webster L. Santos

  DOI：10.1021/jo2003488

  日期：2011.5.20

  A novel sp(2)-sp(3) diboron reagent has been developed for the copper-catalyzed beta-boration of alpha,beta-unsaturated conjugated compounds. The reaction proceeds under mild conditions with various substrates, i.e., alpha,beta-unsaturated esters, ketones, nitriles, ynones, amides, and aldehydes, in the absence of additives such as phosphine and sodium tert-butoxide to provide beta-borylhomoenolates in good to excellent yields. The presence of an sp(3)-hybridized boron center, un-ambigously confirmed by X-ray crystallography, sufficiently activates the unsymmetrical pinacolato diisopropanolaminato diboron (PDIPA diboron, 2) to transfer the sp(2)-hybridized boron moiety chemoselectively. These observations suggest that the activation of one of the boron atoms is an essential step in the Cu-catalyzed beta-boration catalytic cycle.