5-氯-1-戊炔硼酸频那醇酯 | 159087-42-0

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 硼酸衍生物
• 中文名称: 5-氯-1-戊炔硼酸频那醇酯
• 中文别名: 5-氯-1-戊炔基-1-硼酸频那醇酯
• 英文名称: 5-chloro-1-pentynyl-1-boronic acid pinacol ester
• 英文别名: 2-(5-chloropent-1-ynyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane；2-(5-chloropent-1-yn-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
• CAS: 159087-42-0
• 化学式: C₁₁H₁₈BClO₂
• mdl: MFCD09038441
• 分子量: 228.527
• InChiKey: QHWSHBYUQAXFBL-UHFFFAOYSA-N

物化性质

• 密度：
  1.0422 g/mL at 25 °C
• 闪点：
  110 °C

计算性质

• 辛醇/水分配系数(LogP)：
  3.88
• 重原子数：
  15
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.818
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

安全信息

• WGK Germany：
  3
• 海关编码：
  2934999090

SDS

Material Safety Data Sheet

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Section 1. Identification of the substance
Product Name: 5-Chloropent-1-ynylboronic acid, pinacol ester
Synonyms: 2-(5-Chloropent-1-ynyl)-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: 5-Chloropent-1-ynylboronic acid, pinacol ester
CAS number: 159087-42-0

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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, 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: C11H18BClO2
Molecular weight: 228.5

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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, hydrogen chloride.

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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：

  5-氯-1-戊炔硼酸频那醇酯 在 oxone||potassium monopersulfate triple salt 、 水 作用下， 以 丙酮 为溶剂， 反应 12.0h， 以676 mg的产率得到5-氯戊酸
  参考文献：
  名称：

  炔基硼酸酯氧化成羧酸，酯和酰胺。

  摘要：

  已经开发了一种通用有效的方案，用于通过直接从末端炔烃生成的炔基硼酸酯的氧化来合成羧酸，酯和酰胺。该协议代表C（sp）-B键氧化的第一个例子。该方法显示出广泛的底物范围，包括芳基和烷基炔烃，并且具有出色的官能团耐受性。水，伯醇和仲醇以及胺是适合这种转化的亲核试剂。值得注意的是，氨基酸和肽可用作亲核试剂，为合成和修饰肽提供了一种有效的方法。药物分子的制备进一步强调了该方法的实用性。

  DOI：

  10.1002/anie.202000988
• 作为产物：
  描述：

  5-氯戊炔 、 频那醇硼烷 在 C₃₁H₄₃IrN₂Si 作用下， 以 氘代苯 为溶剂， 反应 0.22h， 以99%的产率得到5-氯-1-戊炔硼酸频那醇酯
  参考文献：
  名称：

  铱的SiNN钳形配合物催化末端炔烃脱氢硼化

  摘要：

  具有碳硼键的化合物是通用中间体，可通过将碳硼键加工成其他碳元素键来构建更复杂的分子。通过碳-氢键与二烷氧基硼烷 (RO)2BH 的催化脱氢硼酸化合成碳-硼键特别有吸引力。它已被证明适用于各种碳氢键类型，但不适用于末端炔烃的 C(sp)-H 键，因此三键的硼氢化是一个竞争过程。我们报告了一种新的铱催化剂，它对末端炔烃的 CH 硼酸化具有严格的化学选择性。这种催化剂成功的关键似乎是新的辅助 SiNN 钳配体，它结合了酰胺基、喹啉和甲硅烷基供体，并产生结构上不寻常的 Ir 配合物。

  DOI：

  10.1021/ja311682c

文献信息

• Ligand survey results in identification of PNP pincer complexes of iridium as long-lived and chemoselective catalysts for dehydrogenative borylation of terminal alkynes
  作者：Chun-I Lee、Jessica C. DeMott、Christopher J. Pell、Alyson Christopher、Jia Zhou、Nattamai Bhuvanesh、Oleg V. Ozerov

  DOI：10.1039/c5sc02161h

  日期：——

  Following the report on the successful use of SiNN pincer complexes of iridium as catalysts for dehydrogenative borylation of terminal alkynes (DHBTA) to alkynylboronates, this work examined a wide variety of related pincer ligands in the supporting role in DHBTA. The ligand selection included both new and previously reported ligands and was developed to explore systematic changes to the SiNN framework

  继关于成功使用铱的 SiNN 钳形配合物作为末端炔烃 (DHBTA) 脱氢硼化为炔基硼酸盐的催化剂的报告之后，这项工作研究了各种相关钳形配体在 DHBTA 中的支持作用。配体选择包括新的和以前报道的配体，旨在探索 SiNN 框架（8-（2-二异丙基甲硅烷基苯基）氨基喹啉）的系统变化。令人惊讶的是，只有二芳基氨基/双（膦） PNP 系统显示出任何 DHBTA 反应性。筛选中使用的特定 PNP 配体（带有两个二异丙基膦基侧供体）显示 DHBTA 活性低于 SiNN。然而，利用 PNP 系统提供的配体优化机会，通过磷取代的变化导致发现了一种催化剂，其活性、寿命和范围远远超过了原始 SiNN 原型。在模型 PNP 系统中制备了几种 Ir 配合物，并作为催化循环中的潜在中间体进行了评估。其中，(PNP)Ir 二硼基络合物和硼基亚乙烯基络合物显示出催化能力较差，因此可能不是催化循环的一部分。
• Enantioselective Copper-Catalyzed Oxy-Alkynylation of Diazo Compounds
  作者：Durga Prasad Hari、Jerome Waser

  DOI：10.1021/jacs.7b04756

  日期：2017.6.28

  Enantioselective catalytic methods allowing the addition of both a nucleophile and an electrophile onto diazo compounds give a fast access into important building blocks. Herein, we report the highly enantioselective oxyalkynylation of diazo compounds using ethynylbenziodoxol-(on)e reagents and a simple copper bisoxazoline catalyst. The obtained α-benzoyloxy propargylic esters are useful building blocks

  允许将亲核试剂和亲电试剂添加到重氮化合物上的对映选择性催化方法可以快速进入重要的构建模块。在此，我们报告了使用乙炔基苯并氧醇-(on)e 试剂和简单的铜双恶唑啉催化剂对重氮化合物进行高度对映选择性的氧炔基化反应。获得的α-苯甲酰氧基炔丙酯是有用的结构单元，使用其他方法难以以对映体纯形式合成。所得产物可以有效地转化为邻二醇和α-羟基炔丙酯而不会损失对映体纯度。
• Fast and Highly Chemoselective Alkynylation of Thiols with Hypervalent Iodine Reagents Enabled through a Low Energy Barrier Concerted Mechanism
  作者：Reto Frei、Matthew D. Wodrich、Durga Prasad Hari、Pierre-Antoine Borin、Clément Chauvier、Jérôme Waser

  DOI：10.1021/ja5083014

  日期：2014.11.26

  Nevertheless, general methods to access these compounds are lacking. In this article, we describe the mechanism and full scope of the alkynylation of thiols using ethynyl benziodoxolone (EBX) hypervalent iodine reagents. Computations led to the discovery of a new, three-atom concerted transition state with a very low energy barrier, which rationalizes the high reaction rate. On the basis of this result

  在所有官能团中，炔烃在合成化学和药物化学、化学生物学和材料科学中占据着特殊的地位。硫代炔尤其非常有用，因为它们将三键的增强反应性与生物活性化合物和材料中经常遇到的硫原子结合起来。然而，缺乏获取这些化合物的通用方法。在本文中，我们描述了使用乙炔基苯并氧酮 (EBX) 高价碘试剂对硫醇进行炔基化的机制和完整范围。计算发现了一种新的三原子协同过渡态，其能垒非常低，这使得高反应速率合理化。在此结果的基础上，反应范围扩展到合成含有多种官能团的芳基和烷基取代的炔烃。新的硫亲核试剂如硫代糖苷、硫代酸和硫化氢钠也被成功地炔基化，形成了迄今为止报道的最通用和实用的硫代炔烃合成方法。
• Low‐Temperature Intramolecular [4+2] Cycloaddition of Allenes with Arenes for the Synthesis of Diene Ligands
  作者：Durga Prasad Hari、Guillaume Pisella、Matthew D. Wodrich、Artem V. Tsymbal、Farzaneh Fadaei Tirani、Rosario Scopelliti、Jerome Waser

  DOI：10.1002/anie.202012299

  日期：2021.3

  The intramolecular [4+2] cycloaddition between arenes and allenes first reported by Himbert gives rapid access to rigid polycyclic scaffolds. Herein, we report a one‐pot oxyalkynylation/cycloaddition reaction proceeding under mild conditions (23–90 °C) and providing complex polycyclic architectures with high efficiency, and atom and step economy. The bicyclo[2.2.2]octadiene products were obtained with

  辛伯特（Himbert）首次报道，在芳烃和丙二烯之间进行分子内[4 + 2]环加成反应，可以快速获得刚性多环支架。本文中，我们报告了在温和条件下（23–90°C）进行的单锅氧基炔基化/环加成反应，并提供了高效，原子和步骤经济的复杂多环结构。获得具有多种有用官能团的双环[2.2.2]辛二烯产物，并成功地用作金属催化的手性配体。计算研究基于过渡状态中反直觉的有利色散相互作用，首次合理地给出了环加成反应的低活化能。
• Alkynylboration Reaction Leading to Boron-Containing π-Extended <i>cis</i>-Stilbenes as a Highly Tunable Fluorophore
  作者：Marina Nogami、Keiichi Hirano、Kensuke Morimoto、Masaru Tanioka、Kazunori Miyamoto、Atsuya Muranaka、Masanobu Uchiyama

  DOI：10.1021/acs.orglett.9b01132

  日期：2019.5.3

  An unprecedented boron-containing fluorophore, π-extended cis-stilbene, obtained via alkynylboration reaction of alkynamide is reported. Boron-containing π-extended cis-stilbenes emit fluorescence with high quantum yields in the solid state and exhibit aggregation-induced emission enhancement. The broad substrate scope of the alkynylboration reaction offers facile access to electronically diverse structures

  报道了通过炔基酰胺的炔基硼化反应获得的空前的含硼荧光团，π-扩展的顺式-sti。含硼的π扩展的顺式-斯蒂苯二酚在固态下发出具有高量子产率的荧光，并表现出聚集诱导的发射增强。炔基硼化反应的广泛底物范围提供了对电子多样化结构的便捷访问，从而可以微调光吸收/发射特性。具有二苯基氨基的含硼的π-延伸的顺式-sti通过分子内的电荷转移跃迁显示出溶剂化荧光变色。