4,4,5,5-tetramethyl-2-[(1Z)-2-phenylethenyl]-1,3,2-dioxaborolane | 74213-48-2

• 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: 4,4,5,5-tetramethyl-2-[(1Z)-2-phenylethenyl]-1,3,2-dioxaborolane
• 英文别名: (Z)-4,4,5,5-tetramethyl-2-styryl-1,3,2-dioxaborolane；2-[(Z)-2-phenylethenyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane；(Z)-2-phenylvinylboronic acid pinacol ester；4,4,5,5-tetramethyl-2-styryl-1,3,2-dioxaborolane；cis-4,4,5,5-tetramethyl-2-styryl-1,3,2-dioxaborolane；4,4,5,5-tetramethyl-2-[(Z)-2-phenylethenyl]-1,3,2-dioxaborolane
• CAS: 74213-48-2
• 化学式: C₁₄H₁₉BO₂
• 分子量: 230.115
• InChiKey: ARAINKADEARZLZ-KHPPLWFESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.33
• 重原子数：
  17
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

安全信息

• 海关编码：
  2934999090

反应信息

• 作为反应物：
  描述：

  4,4,5,5-tetramethyl-2-[(1Z)-2-phenylethenyl]-1,3,2-dioxaborolane 在 chloro(1,5-cyclooctadiene)rhodium(I) dimer 、 palladium diacetate 、 potassium carbonate 、 4,5-双二苯基膦-9,9-二甲基氧杂蒽 、 tri tert-butylphosphoniumtetrafluoroborate 作用下， 以 1,4-二氧六环 、 异丙醚 、 水 为溶剂， 反应 20.0h， 生成 1-甲基-4-((e)-苯乙烯)-苯
  参考文献：
  名称：

  Rh立体异构混合物的Rh催化硼化反应立体选择性合成乙烯基硼酸酯

  摘要：

  描述了通过铑催化的乙酸乙烯酯的E / Z混合物的硼酸化硼酸立体选择性地制备乙烯基硼酸酯的方法，该方法还扩展到乙烯基二硼酸酯的合成。这些转变具有高官能团相容性和温和的反应条件。对照实验支持一种涉及Rh催化的硼酸酯化异构化序列的机制。还证明了（Z）-乙烯基硼酸酯的异构化为（E）-异构体。

  DOI：

  10.1002/cjoc.201800575
• 作为产物：
  描述：

  (4,4,5,5-tetramethyl-[1,3,2]-dioxaborolan-2-yl)C(BCy2)CHPh 在 溶剂黄146 、 C.I.酸性橙108 作用下， 以 乙醚 为溶剂， 反应 0.42h， 以69%的产率得到4,4,5,5-tetramethyl-2-[(1Z)-2-phenylethenyl]-1,3,2-dioxaborolane
  参考文献：
  名称：

  Key structural features of cis-cinnamic acid as an allelochemical

  摘要：

  1-O-cis-cinnamoyl-beta-D-glucopyranose is one of the most potent allelochemicals isolated from Spiraea thunbergii Sieb. It is suggested that it derives its strong inhibitory activity from cis-cinnamic acid, which is crucial for phytotoxicity. It was synthesized to confirm its structure and bioactivity, and also a series of cis-cinnamic acid analogues were prepared to elucidate the key features of cis-cinnamic acid for lettuce root growth inhibition. The cis-cyclopropyl analogue showed potent inhibitory activity while the saturated and alkyne analogues proved to be inactive, demonstrating the importance of the as-double bond. Moreover, the aromatic ring could not be replaced with a saturated ring. However, the 1,3-dienylcyclo-hexene analogue showed strong activity. These results suggest that the geometry of the C-C double bond between the carboxyl group and the aromatic ring is essential for potent inhibitory activity. In addition, using several light sources, the photostability of the cinnamic acid derivatives and the role of the C-C double bond were also investigated. (c) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.phytochem.2012.08.001

文献信息

• Synthesis of Functionalized 1,3-Butadienes via Pd-Catalyzed Cross-Couplings of Substituted Allenic Esters in Water at Room Temperature
  作者：Daniel J. Lippincott、Roscoe T. H. Linstadt、Michael R. Maser、Fabrice Gallou、Bruce H. Lipshutz

  DOI：10.1021/acs.orglett.8b01377

  日期：2018.8.17

  responsible, mild method for the synthesis of functionalized 1,3-butadienes is presented. It utilizes allenic esters of varying substitution patterns, as well as a wide range of boron-based nucleophiles under palladium catalysis, generating sp–sp2, sp2–sp2, and sp2–sp3 bonds. Functional group tolerance measured via robustness screening, along with room temperature and aqueous reaction conditions highlight

  提出了一种对环境负责的温和的方法，用于合成官能化的1,3-丁二烯。它利用了不同取代模式的烯丙酸酯，以及在钯催化下的多种硼基亲核试剂，生成了sp–sp 2，sp 2 –sp 2和sp 2 –sp 3键。通过健壮性筛选以及室温和水性反应条件测量的官能团耐受性突出了该方法的广度和在合成中的潜在用途。
• Efficient Synthesis of Aryl Boronates via Zinc-Catalyzed Cross-Coupling of Alkoxy Diboron Reagents with Aryl Halides at Room Temperature
  作者：Shubhankar Kumar Bose、Todd B. Marder

  DOI：10.1021/ol502120q

  日期：2014.9.5

  A zinc(II)/NHC system catalyzes the borylation of aryl halides with diboron (4) reagents in the presence of KOMe at rt. This transformation can be applied to a broad range of substrates with high functional group compatibility. Radical scavenger experiments do not support a radical-mediated process.

  锌（II）/ NHC系统在室温下在KOMe存在下催化芳基卤化物与二硼（4）试剂的硼酸酯化反应。这种转变可应用于具有高官能团相容性的各种基材。自由基清除剂实验不支持自由基介导的过程。
• Intermolecular Reductive C–N Cross Coupling of Nitroarenes and Boronic Acids by P^III/P^V═O Catalysis
  作者：Trevor V. Nykaza、Julian C. Cooper、Gen Li、Nolwenn Mahieu、Antonio Ramirez、Michael R. Luzung、Alexander T. Radosevich

  DOI：10.1021/jacs.8b10769

  日期：2018.11.14

  intermolecular C-N coupling is reported. The method employs a small-ring organophosphorus-based catalyst (1,2,2,3,4,4-hexamethylphosphetane) and a terminal hydrosilane reductant (phenylsilane) to drive reductive intermolecular coupling of nitro(hetero)arenes with boronic acids. Applications to the construction of both Csp2-N (from arylboronic acids) and Csp3-N bonds (from alkylboronic acids) are demonstrated;

  报道了一种通过分子间 CN 偶联合成芳基和杂芳基胺的主要基团催化方法。该方法采用基于小环有机磷的催化剂（1,2,2,3,4,4-六甲基膦烷）和末端氢硅烷还原剂（苯基硅烷）来驱动硝基（杂）芳烃与硼酸的还原性分子间偶联。展示了在构建 Csp2-N（来自芳基硼酸）和 Csp3-N 键（来自烷基硼酸）中的应用；该反应在 Csp3-N 键形成方面是立体有择的。该方法构成了一条从现成的构件到有价值的含氮产品的新途径，与现有催化 CN 偶联方法在范围和化学选择性方面具有互补性。
• Synthesis of Aldehydes by Organocatalytic Formylation Reactions of Boronic Acids with Glyoxylic Acid
  作者：He Huang、Chenguang Yu、Xiangmin Li、Yongqiang Zhang、Yueteng Zhang、Xiaobei Chen、Patrick S. Mariano、Hexin Xie、Wei Wang

  DOI：10.1002/anie.201703127

  日期：2017.7.3

  Reported herein is a conceptually novel organocatalytic strategy for the formylation of boronic acids. New reactivity is engineered into the α‐amino‐acid‐forming Petasis reaction occurring between aryl boronic acids, amines, and glyoxylic acids to prepare aldehydes. The operational simplicity of the process and its ability to generate structurally diverse and valued aryl, heteroaryl, and α,β‐unsaturated

  本文报道了用于硼酸甲酰化的概念上新颖的有机催化策略。在芳基硼酸，胺和乙醛酸之间发生的α-氨基酸形成Petasis反应中引入了新的反应性，以制备醛。该方法的操作简便性及其生成结构多样且有价值的包含多种官能团的芳基，杂芳基和α，β-不饱和醛的能力证明了这种新合成策略的实用性。
• Enantioselective Conjunctive Cross-Coupling of Bis(alkenyl)borates: A General Synthesis of Chiral Allylboron Reagents
  作者：Emma K. Edelstein、Sheila Namirembe、James P. Morken

  DOI：10.1021/jacs.7b01774

  日期：2017.4.12

  conjunctive cross-coupling is used for the synthesis of enantioenriched allylboron reagents. This reaction employs nonsymmetric bis(alkenyl)borates as substrates and appears to occur by a mechanism that involves selective activation of the less substituted alkene followed by migration of the more substituted alkene during the course of a Pd-induced metalate rearrangement.

  钯催化的连接交叉偶联用于合成富含对映体的烯丙基硼试剂。该反应使用非对称双（烯基）硼酸盐作为底物，似乎通过一种机制发生，该机制涉及选择性活化较少取代的烯烃，然后在 Pd 诱导的金属酸盐重排过程中迁移较多取代的烯烃。