2-(1-(4-methoxyphenyl)propyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane | 1240790-32-2

• 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: 2-(1-(4-methoxyphenyl)propyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
• 英文别名: 2-[1-(4-Methoxyphenyl)propyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane；2-[1-(4-methoxyphenyl)propyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
• CAS: 1240790-32-2
• 化学式: C₁₆H₂₅BO₃
• 分子量: 276.184
• InChiKey: HYCHJOIEGNPYAB-UHFFFAOYSA-N

物化性质

• 沸点：
  338.2±35.0 °C(Predicted)
• 密度：
  0.99±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.82
• 重原子数：
  20
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.62
• 拓扑面积：
  27.7
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  2-(1-(4-methoxyphenyl)propyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 在 双氧水 、 potassium hydroxide 作用下， 以 乙醚 、 水 为溶剂， 反应 1.0h， 生成 1-(4-甲氧苯基)丙烷-1-OL
  参考文献：
  名称：

  Chemoselective and Regiospecific Suzuki Coupling on a Multisubstituted sp³-Carbon in 1,1-Diborylalkanes at Room Temperature

  摘要：

  The palladium-catalyzed Suzuki-Miyaura cross-coupling on a multisubstituted sp(3)-carbon in 1,1-diborylalkanes was achieved at room temperature. The generation of a monoborate intermediate by virtue of the adjacent B atom could result in the chemoselective coupling reaction under ambient conditions.

  DOI：

  10.1021/ja105176v
• 作为产物：
  描述：

  4-溴苯甲醚 、 2,2'-(propane-1,1-diyl)bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolane) 在 二(三叔丁基膦)钯 、 potassium hydroxide 作用下， 以 1,4-二氧六环 、 水 为溶剂， 以79%的产率得到2-(1-(4-methoxyphenyl)propyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
  参考文献：
  名称：

  Chemoselective and Regiospecific Suzuki Coupling on a Multisubstituted sp³-Carbon in 1,1-Diborylalkanes at Room Temperature

  摘要：

  The palladium-catalyzed Suzuki-Miyaura cross-coupling on a multisubstituted sp(3)-carbon in 1,1-diborylalkanes was achieved at room temperature. The generation of a monoborate intermediate by virtue of the adjacent B atom could result in the chemoselective coupling reaction under ambient conditions.

  DOI：

  10.1021/ja105176v

文献信息

• Palladium-catalyzed regioselective hydroboration of aryl alkenes with B₂pin₂
  作者：Jiuzhong Huang、Wuxin Yan、Chaowei Tan、Wanqing Wu、Huanfeng Jiang

  DOI：10.1039/c7cc09432a

  日期：——

  A palladium(II)-catalyzed hydroboration of aryl alkenes with stable and easy-to-handle (pinacolato)diboron (B2pin2) under mild conditions has been developed. Acetic acid acted as the solvent and the hydrogen source, which has been identified by deuterium experiments. Notably, isomerization–hydroboration of allyl benzene derivatives was observed. As a result, a series of benzyl boronic esters were obtained

  在温和的条件下，已开发出钯（II）催化的具有稳定且易于处理的（频哪醇）二硼烷（B 2 pin 2）的芳基烯烃加氢硼化反应。乙酸充当了溶剂和氢源，这已通过氘实验确定。值得注意的是，观察到烯丙基苯衍生物的异构化-硼氢化。结果，以中等至优异的产率获得了一系列苄基硼酸酯，并且具有唯一的区域选择性。
• Nickel‐Catalyzed Regioselective Hydroalkylation and Hydroarylation of Alkenyl Boronic Esters
  作者：Srikrishna Bera、Xile Hu

  DOI：10.1002/anie.201907045

  日期：2019.9.23

  catalyzed hydrocarbonation, linear selectivity is most often obtained because of the relative stability of the linear Ni-alkyl intermediate over its branched counterpart. Herein, we show that the boronic pinacol ester (Bpin) group directs a Ni-catalyzed hydrocarbonation to occur at its adjacent carbon center, resulting in formal branch selectivity. Both alkyl and aryl halides can be used as electrophiles

  金属氢化物催化烯烃的烃化反应是从容易获得的烯烃中构建新的碳-碳键的有效方法。然而，烃化的区域选择性仍然难以控制。在氢化镍（NiH）催化的烃化反应中，由于线性Ni-烷基中间体相对于其支链对应物的相对稳定性，最经常获得线性选择性。在这里，我们显示硼烷频哪醇酯（Bpin）基团指导Ni催化的烃化反应发生在其相邻的碳中心，从而形成正式的分支选择性。烷基卤化物和芳基卤化物均可在此烃化反应中用作亲电子试剂，从而提供了广泛的仲烷基Bpin衍生物的途径，它们是合成化学中的重要组成部分。
• Alkene Isomerization–Hydroboration Promoted by Phosphine-Ligated Cobalt Catalysts
  作者：Margaret L. Scheuermann、Elizabeth J. Johnson、Paul J. Chirik

  DOI：10.1021/acs.orglett.5b01135

  日期：2015.6.5

  Generated in situ from air-stable cobalt precursors or readily synthesized using NaHBEt3, (PPh3)(3)CoH(N-2) was found to be an effective catalyst for the hydroboration of alkenes. Unlike previous base-metal catalysts for alkene isomerizationhydroboration which favor the incorporation of boron at terminal positions, (PPh3)(3)CoH(N-2) promotes boron incorporation adjacent to pi-systems even in substrates where the alkene is at a remote position, enabling a unique route to 1,1-diboron compounds from alpha,omega-dienes.