2-(4,4,5,5-四甲基-1,3,2-二氧硼烷)-苯并[b]噻吩 | 376584-76-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并噻吩类
• 中文名称: 2-(4,4,5,5-四甲基-1,3,2-二氧硼烷)-苯并[b]噻吩
• 中文别名: 苯并噻吩-2-硼酸频呢醇酯
• 英文名称: 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[b]thiophene
• 英文别名: 2-(benzo[b]thiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane；benzo(b)thiophene-2-boronic acid pinacol ester；2-(1-benzothiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
• CAS: 376584-76-8
• 化学式: C₁₄H₁₇BO₂S
• mdl: MFCD08063145
• 分子量: 260.165
• InChiKey: RQIATWFGYKTVCM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.57
• 重原子数：
  18
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.428
• 拓扑面积：
  46.7
• 氢给体数：
  0
• 氢受体数：
  3

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：
  储存温度应保持在2-8℃，需干燥并密封保存。

SDS

Material Safety Data Sheet

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Section 1. Identification of the substance
Product Name: Benzo(b)thiophene-2-boronic acid, pinacol ester
Synonyms: 2-(Benzo[b]thiophen-2-yl)-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: Benzo(b)thiophene-2-boronic acid, pinacol ester
CAS number: 376584-76-8

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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: C14H17BO2S
Molecular weight: 260.2

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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, sulfur oxides.

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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-(4,4,5,5-四甲基-1,3,2-二氧硼烷)-苯并[b]噻吩 在 4,4'-联吡啶 、 氧气 、 copper(II) bis(trifluoromethanesulfonate) 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 12.0h， 以0.08 g的产率得到2,2'-bibenzo[b]thiophene
  参考文献：
  名称：

  经由CH硼化的芳烃立体控制CH / CH均偶联。

  摘要：

  描述了一种温和的一锅法方案，该方案通过顺序的Ir催化的CH硼酸酯化和Cu催化的芳烃均偶联合成对称的联芳基。所形成的联芳基的区域化学空间上受CH硼酸酯化步骤的控制。该方法还成功地扩展到了杂芳烃。通过这种方法获得的某些产品无法通过Ullmann或Suzuki耦合协议获得。最后，我们显示了一锅序列描述了CH硼化/ Cu催化的均偶联/ Pd催化的Suzuki偶联以获得π扩展的芳烃骨架。

  DOI：

  10.1039/c9ob00995g
• 作为产物：
  描述：

  苯并噻吩 在 aluminum (III) chloride 、 BCl₃*C₉H₁₃N 、 三乙胺 作用下， 以 邻二氯苯 为溶剂， 反应 41.0h， 生成 2-(4,4,5,5-四甲基-1,3,2-二氧硼烷)-苯并[b]噻吩
  参考文献：
  名称：

  胺介导的亲电芳烃硼化机理研究及其在MIDA硼酸盐合成中的应用

  摘要：

  使用 Y(2)BCl (Y(2) = Cl(2) 或邻儿茶酚) 与等摩尔 AlCl(3) 和叔胺直接亲电硼化已应用于广泛的芳烃和杂芳烃。使用 TMS(2)MIDA 可以对 ArBCl(2) 产品进行原位功能化，以中等至良好的产率提供工作台稳定且易于分离的 MIDA 硼酸盐。根据一项联合实验和计算研究，在 20 °C 下活化芳烃的硼酸化通过 S(E)Ar 机制与硼阳离子 [Y(2)B(胺)](+) 进行，这是关键的亲电子试剂。对于儿茶酚 - 硼阳离子，确定了两种胺依赖性反应途径：（i）使用 [CatB（NEt（3））]（+），需要额外的碱来通过硼化砷阳离子（σ复合物）的去质子化来实现快速硼化, 否则宁愿分解为起始材料，也不愿释放游离胺以实现去质子化。除了胺之外，额外的碱也可以是芳烃本身，当它足够碱性时（例如，N-Me-吲哚）。(ii) 当硼阳离子的胺组分亲核性较低时（例如，2,6-二甲基吡啶

  DOI：

  10.1021/ja3100963

文献信息

• 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。
• Suzuki–Miyaura cross-coupling reaction of aryl and heteroaryl pinacol boronates for the synthesis of 2-substituted pyrimidines
  作者：Shigehiro Asano、Seiji Kamioka、Yoshiaki Isobe

  DOI：10.1016/j.tet.2011.10.057

  日期：2012.1

  Suzuki–Miyaura cross-coupling reaction with 2-heteroarylboronic acids is generally challenging due to these acids easy decomposition. To overcome this problem, we developed a coupling method that uses 2-heteroaryl pinacol boronates in the presence of 1.0 mol % Pd(OAc)2 and 2.0 mol % S-Phos with 4 equiv amount of LiOH in dioxane and H2O at 80 °C for 30 min. This developed method allowed for the synthesis

  由于这些酸易于分解，因此与2-杂芳基硼酸的铃木-宫浦交叉偶联反应通常具有挑战性。为克服此问题，我们开发了一种偶合方法，该方法在1.0 mol％Pd（OAc）2和2.0 mol％S-Phos的存在下，在80％的二恶烷和H 2 O中于80摩尔下使用2-杂芳基频哪醇硼酸酯°C 30分钟。这种发达的方法允许从2-氯嘧啶基衍生物高产率地合成各种各样的2-杂芳基嘧啶，并且还可以用于由杂芳基氯化物制备各种联芳基衍生物。
• 溴二氟甲硫氧基类化合物、中间体，及其制备 方法和应用
  申请人：中国科学院上海有机化学研究所

  公开号：CN107011219B

  公开（公告）日：2018-11-27

  本发明公开了一种溴二氟甲硫氧基类化合物、中间体，及其制备方法及其应用。本发明提供了一种化合物I，其中，R1、R2和R3各自独立地为H、C1～C10的烷基、C6～C10的芳基，且R1、R2和R3中至少两个不同时为H；或所述的R1、R2和R3中任意两个连接，形成C3～C6的环烷烃；或所述的R1、R2和R3中任意两个连接，形成C3～C6的环烷烃，并与苯环形成并环。本发明提供了一种所述的化合物I的制备方法，其包括如下步骤：在有机溶剂中，将化合物II、Cl2和化合物III进行反应，得到所述的化合物I即可。使用本发明的溴二氟甲硫氧基类化合物I，能实现芳烃或杂芳烃化合物上直接引入溴二氟甲硫基。
• Synthesis and Reactivity of α‐Cumyl Bromodifluoromethanesulfenate: Application to the Radiosynthesis of [ ¹⁸ F]ArylSCF ₃
  作者：Jiang Wu、Qunchao Zhao、Thomas C. Wilson、Stefan Verhoog、Long Lu、Véronique Gouverneur、Qilong Shen

  DOI：10.1002/anie.201813708

  日期：2019.2.18

  A highly reactive electrophilic bromodifluoromethylthiolating reagent, α-cumyl bromodifluoro-methanesulfenate 1, was prepared to allow for direct bromodifluoromethylthiolation of aryl boron reagents. This coupling reaction takes place under copper catalysis, and affords a large range of bromodifluoromethylthiolated arenes. These compounds are amenable to various transformations including halogen exchange

  制备了高反应性的亲电溴二氟甲基硫醇化试剂，α-枯基溴二氟甲基甲磺酸盐1，以允许芳基硼试剂的直接溴二氟甲基硫醇化。该偶联反应在铜催化下发生，并提供了大范围的溴二氟甲基硫醇化的芳烃。这些化合物可进行各种转化，包括与[18 F] KF / K222进行卤素交换，该过程可从相应的芳基硼酸频哪醇酯分两步获得[18 F]芳基SCF3。
• Highly Selective and Divergent Acyl and Aryl Cross-Couplings of Amides via Ir-Catalyzed C–H Borylation/N–C(O) Activation
  作者：Pengcheng Gao、Michal Szostak

  DOI：10.1021/acs.orglett.0c02105

  日期：2020.8.7

  Herein, we demonstrate that amides can be readily coupled with nonactivated arenes via sequential Ir-catalyzed C–H borylation/N–C(O) activation. This methodology provides facile access to biaryl ketones and biaryls by the sterically controlled Ir-catalyzed C–H borylation and divergent acyl and decarbonylative amide N–C(O) and C–C activation. The methodology diverts the traditional acylation and arylation

  在这里，我们证明酰胺可以通过连续的Ir催化的C–H硼酸酯化/ N–C（O）活化而容易地与未活化的芳烃偶联。这种方法可通过空间控制的Ir催化的C–H硼化以及不同的酰基和脱羰基酰胺N–C（O）和C–C活化来轻松获得联芳基酮和联芳基。该方法转移了传统的酰化和芳基化区域选择性，使我们能够直接利用容易获得的芳烃和酰胺来产生有价值的酮和联芳基。