2-苯基乙基-1-硼酸频哪醇酯 | 165904-22-3

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 中文名称: 2-苯基乙基-1-硼酸频哪醇酯
• 中文别名: 2-苯基乙基-1-硼酸频哪酯
• 英文名称: 4,4,5,5-tetramethyl-2-phenethyl-1,3,2-dioxaborolane
• 英文别名: phenethylboronic acid pinacol ester；2-phenethyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane；4,4,5,5-tetramethyl-2-(2-phenylethyl)-1,3,2-dioxaborolane；2-(2-phenylethyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane；2-phenylethyl-1-boronic acid pinacol ester；(2-phenylethyl)boronic acid pinacol ester；phenethyl pinacol boronic ester
• CAS: 165904-22-3
• 化学式: C₁₄H₂₁BO₂
• mdl: MFCD03788721
• 分子量: 232.131
• InChiKey: LVLQNRWCBBIVHR-UHFFFAOYSA-N

物化性质

• 熔点：
  31-33℃
• 沸点：
  70-80℃
• 密度：
  0.97±0.1 g/cm3(Predicted)
• 稳定性/保质期：
  避氧化物

计算性质

• 辛醇/水分配系数(LogP)：
  4.25
• 重原子数：
  17
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.571
• 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
• 安全说明：
  S24/25
• 危险性防范说明：
  P261,P280,P301+P312,P302+P352,P305+P351+P338
• 危险性描述：
  H302,H315,H319,H335
• 储存条件：
  保存方法：密封、阴凉、干燥处

SDS

Material Safety Data Sheet

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Section 1. Identification of the substance
Product Name: 2-Phenylethylboronic acid, pinacol ester
Synonyms:

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Section 2. Hazards identification
Harmful by inhalation, in contact with skin, and if swallowed.

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Section 3. Composition/information on ingredients.
Ingredient name: 2-Phenylethylboronic acid, pinacol ester
CAS number: 165904-22-3

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Section 4. First aid measures
Skin contact: Immediately wash skin with copious amounts of water for at least 15 minutes while removing
contaminated clothing and shoes. If irritation persists, seek medical attention.
Eye contact: Immediately wash skin with copious amounts of water for at least 15 minutes. Assure adequate
flushing of the eyes by separating the eyelids with fingers. If irritation persists, seek medical
attention.
Inhalation: Remove to fresh air. In severe cases or if symptoms persist, seek medical attention.
Ingestion: Wash out mouth with copious amounts of water for at least 15 minutes. Seek medical attention.

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Section 5. Fire fighting measures
In the event of a fire involving this material, alone or in combination with other materials, use dry
powder or carbon dioxide extinguishers. Protective clothing and self-contained breathing apparatus
should be worn.

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Section 6. Accidental release measures
Personal precautions: Wear suitable personal protective equipment which performs satisfactorily and meets local/state/national
standards.
Respiratory precaution: Wear approved mask/respirator
Hand precaution: Wear suitable gloves/gauntlets
Skin protection: Wear suitable protective clothing
Eye protection: Wear suitable eye protection
Methods for cleaning up: Mix with sand or similar inert absorbent material, sweep up and keep in a tightly closed container
for disposal. See section 12.
Environmental precautions: Do not allow material to enter drains or water courses.

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Section 7. Handling and storage
Handling: This product should be handled only by, or under the close supervision of, those properly qualified
in the handling and use of potentially hazardous chemicals, who should take into account the fire,
health and chemical hazard data given on this sheet.
Store in closed vessels, under −20◦C.
Storage:

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Section 8. Exposure Controls / Personal protection
Engineering Controls: Use only in a chemical fume hood.
Personal protective equipment: Wear laboratory clothing, chemical-resistant gloves and safety goggles.
General hydiene measures: Wash thoroughly after handling. Wash contaminated clothing before reuse.

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Section 9. Physical and chemical properties
Appearance: Not specified
Boiling point: No data
No data
Melting point:
Flash point: No data
Density: No data
Molecular formula: C14H21BO2
Molecular weight: 232.1

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Section 10. Stability and reactivity
Conditions to avoid: Heat, flames and sparks.
Materials to avoid: Oxidizing agents.
Possible hazardous combustion products: Carbon monoxide.

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Section 11. Toxicological information
No data.

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Section 12. Ecological information
No data.

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Section 13. Disposal consideration
Arrange disposal as special waste, by licensed disposal company, in consultation with local waste
disposal authority, in accordance with national and regional regulations.

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Section 14. Transportation information
Non-harzardous for air and ground transportation.

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Section 15. Regulatory information
No chemicals in this material are subject to the reporting requirements of SARA Title III, Section
302, or have known CAS numbers that exceed the threshold reporting levels established by SARA
Title III, Section 313.

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SECTION 16 - ADDITIONAL INFORMATION
N/A

反应信息

• 作为反应物：
  描述：

  2-苯基乙基-1-硼酸频哪醇酯 在 rose bengal 、 三乙胺 作用下， 以 乙醇 为溶剂， 反应 12.0h， 以91%的产率得到苯乙醇
  参考文献：
  名称：

  使用原位产生的过氧化氢的可见光介导的有机氧化合物的好氧氧化

  摘要：

  已经开发了一种简单而通用的可见光介导的有机硼化合物的氧化方法，其中孟加拉红作为光催化剂，亚化学计量的Et 3 N作为电子给体，而空气作为氧化剂。这种温和且不含金属的方案显示了广泛的底物范围，并以中等至极好的收率提供了多种脂族醇和酚。值得注意的是，该方法的鲁棒性在有机硼化合物的立体有氧氧化中得到了证明。

  DOI：

  10.1021/acs.orglett.8b02095
• 作为产物：
  描述：

  2-苯基-1-乙炔硼酸频那醇酯 在 Schwartz's reagent 、 C₃₀H₄₀IrNO₂P⁽¹⁺⁾*C₃₂H₁₂BF₂₄^(1-) 、 氢气 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 20.0~50.0 ℃ 、3.0 MPa 条件下， 反应 20.0h， 生成 2-苯基乙基-1-硼酸频哪醇酯
  参考文献：
  名称：

  铱-PˆN配合物对（1-溴-1-烯基）硼酸酯的化学选择不对称氢化的研究

  摘要：

  在本文中，我们报告了（1-溴-1-烯基）硼酸酯的第一个化学选择性不对称氢化，这构成了（α-溴烷基）硼酸酯的新途径。研究表明，用铱-PˆN配合物氢化烷基取代的衍生物可以获得优异的化学选择性和完全转化率。此外，无环烷基衍生物以良好的对映选择性（ee）为64-73％ee提供（α-溴烷基）硼酸酯。仅以接近外消旋形式获得环状烷基衍生物。

  DOI：

  10.1016/j.tet.2014.02.065

文献信息

• Investigation of Functionalized α-Chloroalkyllithiums for a Stereospecific Reagent-Controlled Homologation Approach to the Analgesic Alkaloid (−)-Epibatidine
  作者：Christopher R. Emerson、Lev N. Zakharov、Paul R. Blakemore

  DOI：10.1002/chem.201302511

  日期：2013.11.25

  respectively; α‐deuterated isotopomers D‐18 a and D‐18 d gave yields of 33 and 79 % for the same reaction. Double StReCH of 17 was pursued to target contiguous stereodiads appropriate for the total synthesis of (−)‐epibatidine (15). One‐pot double StReCH of boronate 17 by two exposures to (S)‐D‐18 a (≤66 % ee), followed by work‐up with KOOH, gave the expected stereodiad product in 16 % yield (d.r.∼67:33)

  四个假定的功能化α-氯烷基锂RCH 2 CHLiCl，其中R = CHCH 2（18 a），CCH（18 b），CH 2 OBn（18 c）和CH [O（CH 2）2 O]（18 d），由α-氯亚砜中的亚砜-锂交换原位生成，并研究了苯乙基和2-氯吡啶-5-基（17）频哪醇硼酸酯的立体定向试剂控制的同源性（StReCH）。氘标记实验表明，α - chloroalkyllithiums是由质子转移从他们的α淬火-氯亚砜的前体，并已确定这种效果会影响StReCH反应的收率。发现使用α-氘代α-氯亚砜可以通过抑制类胡萝卜素与其前体之间的酸碱化学反应速率来改善该问题。卡宾18和18b中显示STRECH疗效不佳，特别是炔丙基轴承卡宾18b中，不稳定性，其中归因于一个浅显1,2-氢化物转移。相比之下，在18 d时，受益于O和Li原子之间稳定相互作用的类胡萝卜素具有良好的StReCH收率。硼酸酯17是通过链延长卡宾18，18b中，和18
• Rhodium-Catalyzed Regiodivergent Synthesis of Alkylboronates via Deoxygenative Hydroboration of Aryl Ketones: Mechanism and Origin of Selectivities
  作者：Bing Zhang、Xin Xu、Lei Tao、Zhenyang Lin、Wanxiang Zhao

  DOI：10.1021/acscatal.1c02685

  日期：2021.8.6

  available ketones. Mechanistic studies suggest that this Rh-catalyzed deoxygenative borylation of ketones goes through an alkene intermediate, which undergoes regiodivergent hydroboration to afford linear and branched alkylboronates. The different steric effects of PPh2Me and P(nBu)3 were found to be responsible for product selectivity by density functional theory calculations. The alkene intermediate

  在这里，我们报告了一种有效的铑催化酮脱氧硼酸化合成烷基硼酸酯，其中区域选择性可以通过选择配体来切换。直链烷基硼酸酯仅在 P( n Bu) 3存在下获得，PPh 2 Me 有利于支链烷基硼酸酯的形成。该协议还允许从现成的酮中获取 1,1,2-三硼酸酯。机理研究表明，这种 Rh 催化的酮类脱氧硼酸化反应经过烯烃中间体，该中间体经历区域发散硼氢化反应，得到直链和支链烷基硼酸酯。PPh 2 Me 和 P( n Bu) 3的不同空间位阻效应通过密度泛函理论计算发现是产物选择性的原因。烯烃中间体也可以依次进行脱氢硼酸化和硼氢化反应以提供三硼酸酯。
• Stereocontrolled Synthesis of 1,5-Stereogenic Centers through Three-Carbon Homologation of Boronic Esters
  作者：Phillip J. Unsworth、Daniele Leonori、Varinder K. Aggarwal

  DOI：10.1002/anie.201405700

  日期：2014.9.8

  Allylic pinacol boronic esters are stable toward 1,3‐borotropic rearrangement. We developed a PdII‐mediated isomerization process that gives di‐ or trisubstituted allylic boronic esters with high E selectivity. The combination of this method with lithiation–borylation enables the synthesis of carbon chains that bear 1,5‐stereogenic centers. The utility of this method has been demonstrated in a formal

  烯丙基频哪醇硼酸酯对1,3-硼异向重排是稳定的。我们开发了一种由Pd II介导的异构化工艺，该工艺可产生具有高E 选择性的二或三取代的烯丙基硼酸酯。这种方法与锂化-硼化的结合可以合成具有1,5-立体异构中心的碳链。该方法的效用已在（+）-茉莉素的正式合成中得到了证明。
• Manganese-Catalyzed Borylation of Unactivated Alkyl Chlorides
  作者：Thomas C. Atack、Silas P. Cook

  DOI：10.1021/jacs.6b03157

  日期：2016.5.18

  of (bis)pinacolatodiboron with a wide range of alkyl halides, demonstrating the first manganese-catalyzed coupling with alkyl electrophiles. This method allows access to primary, secondary, and tertiary boronic esters from the parent chlorides, which were previously inaccessible as coupling partners. The reaction proceeds in high yield with as little as 1000 ppm catalyst loading, while 5 mol % can

  使用低成本的溴化锰 (MnBr2) 和四甲基乙二胺 (TMEDA) 催化（双）频哪醇二硼与多种烷基卤化物的交叉偶联，证​​明了锰催化与烷基亲电试剂的首次偶联。该方法允许从母体氯化物中获得伯、仲和叔硼酸酯，这些以前作为偶联伙伴是无法获得的。该反应以低至 1000 ppm 的催化剂负载量以高产率进行，而 5 mol% 可在短短 30 分钟内提供高产率。最后，自由基时钟实验表明，在 0 °C 时，直接硼酸化作用胜过其他自由基过程，从而提供合成有用的、温度控制的反应结果。
• Enantiospecific Suzuki-Miyaura Coupling of Nonbenzylic α-(Acylamino)alkylboronic Acid Derivatives
  作者：Toshimichi Ohmura、Kyoko Miwa、Tomotsugu Awano、Michinori Suginome

  DOI：10.1002/asia.201800536

  日期：2018.9.4

  Suzuki–Miyaura coupling of nonbenzylic α‐(acylamino)alkylboron compounds with aryl halides is established. A Pd/PCy2Ph catalyst promotes the reaction efficiently at 145 °C. The reaction of enantioenriched α‐(acylamino)alkylboron compounds affords chiral 1‐arylalkylamides in high enantiospecificity and inversion of configuration.

  建立了非苄基α-（酰基氨基）烷基硼化合物与芳基卤化物的Suzuki-Miyaura偶联。Pd / PCy 2 Ph催化剂可在145°C的条件下有效地促进反应。富含对映体的α-（酰基氨基）烷基硼化合物的反应可提供高对映体特异性和构型反转的手性1-芳基烷基酰胺。