3,4-二甲基苯硼酸频呐醇酯 | 401797-00-0

• 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: 3,4-二甲基苯硼酸频呐醇酯
• 中文别名: 3,4-二甲基苯硼酸频那醇酯
• 英文名称: 2-(3,4-dimethylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
• 英文别名: 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-o-xylene；3,4-dimethylphenylboronic acid pinacol ester；1,2-dimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene
• CAS: 401797-00-0
• 化学式: C₁₄H₂₁BO₂
• 分子量: 232.131
• InChiKey: HWIMTTLCFONAAB-UHFFFAOYSA-N

物化性质

• 熔点：
  35 °C
• 沸点：
  325.4±31.0 °C(Predicted)
• 密度：
  0.97±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  17
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.57
• 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
• 危险性防范说明：
  P261,P305+P351+P338
• 危险性描述：
  H302,H315,H319,H335
• 储存条件：
  0-10°C

SDS

Material Safety Data Sheet

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Section 1. Identification of the substance
Product Name: 3,4-Dimethylphenylboronic acid pinacol ester
Synonyms: 2-(3,4-Dimethylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

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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: 3,4-Dimethylphenylboronic acid pinacol ester
CAS number: 401797-00-0

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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.
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：

  3,4-二甲基苯硼酸频呐醇酯 在 copper(I) bromide 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 2.0h， 生成
  参考文献：
  名称：

  铜促进硼酯和二氮杂环丁酮的 C-N 偶联：一种制备芳基脲的方法

  摘要：

  描述了一种新的铜促进硼酯和二叔丁基二氮杂环丁酮之间的 C-N 偶联。在温和条件下可以很容易地获得多种芳基脲，产率高达 92%。

  DOI：

  10.1021/acs.orglett.1c03468
• 作为产物：
  描述：

  3,4-二甲基苯酚 在 potassium acetate 、 三乙胺 作用下， 以 二氯甲烷 、 叔丁醇 为溶剂， 反应 18.0h， 生成 3,4-二甲基苯硼酸频呐醇酯
  参考文献：
  名称：

  钯催化的甲磺酸烷基酯和甲苯磺酸酯的硼化反应及其在一锅顺序铃木-宫浦联芳的合成中的应用

  摘要：

  一锅之巅！描述了芳基甲苯磺酸盐和甲磺酸盐的第一个钯催化的硼化反应。反应条件温和，并具有出色的官能团相容性（例如，R = CN，CHO，COOMe，C（O）R，NH 2或NH-吲哚；请参见方案）。Pd / MeO-CM-phos可在不对称联芳烃的制备中进行一锅法依次反应。

  DOI：

  10.1002/chem.201100361

文献信息

• <scp>Pd‐Catalyzed Site‐Selective</scp> Borylation of Simple Arenes <i>via</i> Thianthrenation ^†
  作者：Xiao‐Yue Chen、Yu‐Hao Huang、Jian Zhou、Peng Wang

  DOI：10.1002/cjoc.202000212

  日期：2020.11

  Site‐selective borylation of simple arenes was realized in one pot via an electrophilic thianthrenation/Pd‐catalyzed borylation sequence. The key to achieve this operatically simple process is the use of Pd catalysis, which could tolerate the solvent and acidic conditions used in the thianthrenation step. This protocol features mild conditions, broad functional group tolerance, and simple manipulations

  简单的芳烃的位点选择性硼化通过亲电子的thththrenation / Pd催化的硼化序列实现。实现这种操作上简单的过程的关键是使用Pd催化，该催化可以耐受在thththrenation步骤中使用的溶剂和酸性条件。该方案具有温和的条件，宽泛的官能团耐受性和简单的操作方法，适用于各种药物和复杂的生物活性分子的后期功能化。
• Single-Site Cobalt-Catalyst Ligated with Pyridylimine-Functionalized Metal–Organic Frameworks for Arene and Benzylic Borylation
  作者：Rajashree Newar、Wahida Begum、Neha Antil、Sakshi Shukla、Ajay Kumar、Naved Akhtar、Balendra、Kuntal Manna

  DOI：10.1021/acs.inorgchem.0c00747

  日期：2020.8.3

  also significantly more robust and active than its homogeneous control, highlighting the beneficial effect of active-site isolation within the MOF framework that prevents intermolecular decomposition. The experimental and computational studies suggested (pyrim•−)CoI(THF) as the active catalytic species within the MOF, which undergoes a mechanistic pathway of oxidative addition, turnover limiting σ-bond

  我们报告了一种基于多孔且坚固耐用的吡啶基嘧啶功能化的金属有机骨架（pyrim-MOF）的高活性单中心非均相钴催化剂，用于芳烃和苄基CH键的化学选择性硼化。由U-O-68拓扑结构构成的嘧啶-MOF由锆-簇的二级结构单元和嘧啶基官能化的二羧酸桥接桥连接体构成，先用CoCl 2进行金属化，然后用NaEt 3 BH处理，得到钴官能化的MOF催化剂（pyrim- MOF-Co）。Pyrim-MOF-Co具有广泛的底物范围，允许使用B 2销2对卤素，烷氧基，烷基取代的芳烃以及杂环系统进行C–H硼化或用HBpin（pin =频哪醇酯）作为硼酸酯化剂，以高收率得到相应的芳烃或烷基硼酸酯。Pyrim-MOF-Co的营业额（TON）高达2500，并且可以循环使用至少9次。Pyrim-MOF-Co还比其均质控件强得多，并且更具活性，突出了在MOF框架内进行主动位点隔离以防止分子间分解的有益作用。实验和计算研究表明（pyrim
• Metal-organic frameworks containing nitrogen-donor ligands for efficient catalytic organic transformations
  申请人：The University of Chicago

  公开号：US10647733B2

  公开（公告）日：2020-05-12

  Metal-organic framework (MOFs) compositions based on nitrogen donor-based organic bridging ligands, including ligands based on 1,3-diketimine (NacNac), bipyridines and salicylaldimine, were synthesized and then post-synthetically metalated with metal precursors, such as complexes of first row transition metals. Metal complexes of the organic bridging ligands could also be directly incorporated into the MOFs. The MOFs provide a versatile family of recyclable and reusable single-site solid catalysts for catalyzing a variety of asymmetric organic transformations. The solid catalysts can also be integrated into a flow reactor or a supercritical fluid reactor.

  基于以氮为供体的有机桥联配体，包括基于1,3-二酮亚胺（NacNac）、联吡啶和柳酸亚胺的金属-有机框架（MOFs）组成物被合成，然后用金属前驱体如第一行过渡金属的络合物进行后合成金属化。有机桥联配体的金属络合物也可以直接并入MOFs中。MOFs提供了一个多功能的、可回收和可重复使用的单点固体催化剂家族，用于催化各种不对称有机转化。这些固体催化剂也可以集成到流动反应器或超临界流体反应器中。
• Room temperature Pd(0)/Ad3P-catalyzed coupling reactions of aryl chlorides with bis(pinacolato)diboron
  作者：Jie Dong、Hui Guo、Wei Peng、Qiao-Sheng Hu

  DOI：10.1016/j.tetlet.2019.01.042

  日期：2019.3

  Pd(0)/Ad3P-catalyzed cross-coupling reactions of aryl chlorides with bis(pinacolato)diboron are described. The Pd(0)/Ad3P catalyst, generated from Ad3P-coordinated acetanilide-based palladacycle complex, proved to be an efficient catalyst system for the Miyaura borylation reactions of a variety of aryl chlorides with bis(pinacolato)diboron. The mild reaction condition, the easy availability of the catalyst

  描述了室温下Pd（0）/ Ad 3 P催化的芳基氯化物与双（频哪醇）二硼的交叉偶联反应。由Ad 3 P配位的对乙酰苯胺基palladacycle配合物生成的Pd（0）/ Ad 3 P催化剂被证明是一种有效的催化剂体系，用于多种芳基氯化物与双（频哪醇）二硼烷的Miyaura硼酸酯化反应。温和的反应条件，容易获得的催化剂以及良好的偶联收率使得这些反应潜在地可用于有机合成中。
• Hydrogenation of (Hetero)aryl Boronate Esters with a Cyclic (Alkyl)(amino)carbene–Rhodium Complex: Direct Access to <i>cis</i> ‐Substituted Borylated Cycloalkanes and Saturated Heterocycles
  作者：Liang Ling、Yuan He、Xue Zhang、Meiming Luo、Xiaoming Zeng

  DOI：10.1002/anie.201811210

  日期：2019.5.13

  We herein report the hydrogenation of substituted aryl‐ and heteroaryl boronate esters for the selective synthesis of cis‐substituted borylated cycloalkanes and saturated heterocycles. A cyclic (alkyl)(amino)carbene‐ligated rhodium complex with two dimethyl groups at the ortho‐alkyl scaffold of the carbene showed high reactivity in promoting the hydrogenation, thereby enabling the hydrogenation of

  我们在此报告了取代的芳基和杂芳基硼酸酯的氢化反应，用于选择性合成顺式取代的硼化环烷烃和饱和杂环。在卡宾的邻烷基支架上带有两个二甲基的环状（烷基）（氨基）卡宾连接的铑配合物在促进氢化方面显示出高反应活性，从而使（杂）芳烃得以氢化并保留了合成有价值的硼酸酯团体。该过程构成了清洁，原子经济以及化学和立体选择性的途径，用于生成通常难以捉摸且难以制备的顺式构型，不同取代的硼酸化环烷烃和饱和杂环。

表征谱图