1,4-二甲氧基-2-丁炔 | 16356-02-8

• 分子结构分类: 有机化合物 - 有机氧化合物
• 中文名称: 1,4-二甲氧基-2-丁炔
• 英文名称: 1,4-dimethoxy-2-butyne
• 英文别名: 1,4-dimethoxybut-2-yne
• CAS: 16356-02-8
• 化学式: C₆H₁₀O₂
• mdl: MFCD00048069
• 分子量: 114.144
• InChiKey: YFUQYYGBJJCAPR-UHFFFAOYSA-N

物化性质

• 熔点：
  -39°C(lit.)
• 沸点：
  70 °C/30 mmHg (lit.)
• 密度：
  0.944 g/mL at 25 °C (lit.)
• 闪点：
  128 °F
• 稳定性/保质期：
  按规定使用不会分解，避免接触氧化剂、高温、火花或明火。

计算性质

• 辛醇/水分配系数(LogP)：
  0
• 重原子数：
  8
• 可旋转键数：
  2
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.666
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

安全信息

• 危险等级：
  3
• 安全说明：
  S23,S24/25
• 危险类别码：
  R10
• 海关编码：
  2909199090
• 危险品运输编号：
  UN 3271 3/PG 3
• 包装等级：
  III
• 危险类别：
  3
• 危险性防范说明：
  P501,P240,P210,P233,P243,P241,P242,P280,P370+P378,P303+P361+P353,P403+P235
• 危险性描述：
  H225
• 储存条件：
  存放于密闭、阴凉、干燥处

SDS

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Section 1. IDENTIFICATION OF THE SUBSTANCE/MIXTURE
Product identifiers
Product name : 1,4-Dimethoxy-2-butyne
CAS-No. : 16356-02-8
Relevant identified uses of the substance or mixture and uses advised against
Identified uses : Laboratory chemicals, Manufacture of substances

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Section 2. HAZARDS IDENTIFICATION
Classification of the substance or mixture
Classification according to Regulation (EC) No 1272/2008 [EU-GHS/CLP]
Flammable liquids (Category 3)
Classification according to EU Directives 67/548/EEC or 1999/45/EC
Flammable.
Label elements
Labelling according Regulation (EC) No 1272/2008 [CLP]
Pictogram
Signal word Warning
Hazard statement(s)
H226 Flammable liquid and vapour.
Precautionary statement(s) none
Supplemental Hazard none
Statements
According to European Directive 67/548/EEC as amended.
Hazard symbol(s) none
R-phrase(s)
R10 Flammable.
S-phrase(s)
S16 Keep away from sources of ignition - No smoking.
Other hazards - none

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Section 3. COMPOSITION/INFORMATION ON INGREDIENTS
Substances
Formula : C6H10O2
Molecular Weight : 114,14 g/mol

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Section 4. FIRST AID MEASURES
Description of first aid measures
General advice
Consult a physician. Show this safety data sheet to the doctor in attendance.
If inhaled
If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician.
In case of skin contact
Wash off with soap and plenty of water. Consult a physician.
In case of eye contact
Flush eyes with water as a precaution.
If swallowed
Do NOT induce vomiting. Never give anything by mouth to an unconscious person. Rinse mouth with
water. Consult a physician.
Most important symptoms and effects, both acute and delayed
To the best of our knowledge, the chemical, physical, and toxicological properties have not been
thoroughly investigated.
Indication of any immediate medical attention and special treatment needed
no data available

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Section 5. FIREFIGHTING MEASURES
Extinguishing media
Suitable extinguishing media
For small (incipient) fires, use media such as "alcohol" foam, dry chemical, or carbon dioxide. For large
fires, apply water from as far as possible. Use very large quantities (flooding) of water applied as a mist or
spray; solid streams of water may be ineffective. Cool all affected containers with flooding quantities of
water.
Special hazards arising from the substance or mixture
Carbon oxides
Advice for firefighters
Wear self contained breathing apparatus for fire fighting if necessary.
Further information
Use water spray to cool unopened containers.

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Section 6. ACCIDENTAL RELEASE MEASURES
Personal precautions, protective equipment and emergency procedures
Avoid breathing vapors, mist or gas. Remove all sources of ignition. Beware of vapours accumulating to
form explosive concentrations. Vapours can accumulate in low areas.
Environmental precautions
Prevent further leakage or spillage if safe to do so. Do not let product enter drains.
Methods and materials for containment and cleaning up
Contain spillage, and then collect with an electrically protected vacuum cleaner or by wet-brushing and
place in container for disposal according to local regulations (see section 13).
Reference to other sections
For disposal see section 13.

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Section 7. HANDLING AND STORAGE
Precautions for safe handling
Avoid inhalation of vapour or mist.
Keep away from sources of ignition - No smoking.Take measures to prevent the build up of electrostatic
charge.
Conditions for safe storage, including any incompatibilities
Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Containers which are
opened must be carefully resealed and kept upright to prevent leakage.
Specific end use(s)
no data available

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Section 8. EXPOSURE CONTROLS/PERSONAL PROTECTION
Control parameters
Components with workplace control parameters
Exposure controls
Appropriate engineering controls
Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and
at the end of workday.
Personal protective equipment
Eye/face protection
Face shield and safety glasses Use equipment for eye protection tested and approved under
appropriate government standards such as NIOSH (US) or EN 166(EU).
Skin protection
Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique
(without touching glove's outer surface) to avoid skin contact with this product. Dispose of
contaminated gloves after use in accordance with applicable laws and good laboratory practices.
Wash and dry hands.
The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and
the standard EN 374 derived from it.
Body Protection
Impervious clothing., Flame retardant antistatic protective clothing, The type of protective
equipment must be selected according to the concentration and amount of the dangerous
substance at the specific workplace.
Respiratory protection
Where risk assessment shows air-purifying respirators are appropriate use a full-face respirator
with multi-purpose combination (US) or type ABEK (EN 14387) respirator cartridges as a backup
to engineering controls. If the respirator is the sole means of protection, use a full-face supplied air
respirator. Use respirators and components tested and approved under appropriate government
standards such as NIOSH (US) or CEN (EU).

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Section 9. PHYSICAL AND CHEMICAL PROPERTIES
Information on basic physical and chemical properties
a) Appearance Form: liquid
Colour: colourless
b) Odour no data available
c) Odour Threshold no data available
d) pH no data available
e) Melting point/freezing no data available
point
f) Initial boiling point and 70 °C at 40 hPa - lit.
boiling range
g) Flash point 53 °C - closed cup
h) Evaporation rate no data available
i) Flammability (solid, gas) no data available
j) Upper/lower no data available
flammability or
explosive limits
k) Vapour pressure no data available
l) Vapour density no data available
m) Relative density 0,944 g/cm3 at 25 °C
n) Water solubility no data available
o) Partition coefficient: n- no data available
octanol/water
p) Auto-ignition no data available
temperature
q) Decomposition no data available
temperature
r) Viscosity no data available
s) Explosive properties no data available
t) Oxidizing properties no data available
Other safety information
no data available

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Section 10. STABILITY AND REACTIVITY
Reactivity
no data available
Chemical stability
no data available
Possibility of hazardous reactions
no data available
Conditions to avoid
Heat, flames and sparks.
Incompatible materials
Strong oxidizing agents
Hazardous decomposition products
Other decomposition products - no data available

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Section 11. TOXICOLOGICAL INFORMATION
Information on toxicological effects
Acute toxicity
no data available
Skin corrosion/irritation
no data available
Serious eye damage/eye irritation
no data available
Respiratory or skin sensitization
no data available
Germ cell mutagenicity
no data available
Carcinogenicity
IARC: No component of this product present at levels greater than or equal to 0.1% is identified as
probable, possible or confirmed human carcinogen by IARC.
Reproductive toxicity
no data available
Specific target organ toxicity - single exposure
no data available
Specific target organ toxicity - repeated exposure
no data available
Aspiration hazard
no data available
Potential health effects
Inhalation May be harmful if inhaled. May cause respiratory tract irritation.
Ingestion May be harmful if swallowed.
Skin May be harmful if absorbed through skin. May cause skin irritation.
Eyes May cause eye irritation.
Signs and Symptoms of Exposure
To the best of our knowledge, the chemical, physical, and toxicological properties have not been
thoroughly investigated.
Additional Information
RTECS: Not available

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Section 12. ECOLOGICAL INFORMATION
Toxicity
no data available
Persistence and degradability
no data available
Bioaccumulative potential
no data available
Mobility in soil
no data available
Results of PBT and vPvB assessment
no data available
Other adverse effects
no data available

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Section 13. DISPOSAL CONSIDERATIONS
Waste treatment methods
Product
Burn in a chemical incinerator equipped with an afterburner and scrubber but exert extra care in igniting
as this material is highly flammable. Offer surplus and non-recyclable solutions to a licensed disposal
company. Contact a licensed professional waste disposal service to dispose of this material.
Contaminated packaging
Dispose of as unused product.

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Section 14. TRANSPORT INFORMATION
UN number
ADR/RID: 3271 IMDG: 3271 IATA: 3271
UN proper shipping name
ADR/RID: ETHERS, N.O.S. (1,4-Dimethoxy-2-butyne)
IMDG: ETHERS, N.O.S. (1,4-Dimethoxy-2-butyne)
IATA: Ethers, n.o.s. (1,4-Dimethoxy-2-butyne)
Transport hazard class(es)
ADR/RID: 3 IMDG: 3 IATA: 3
Packaging group
ADR/RID: III IMDG: III IATA: III
Environmental hazards
ADR/RID: no IMDG Marine Pollutant: no IATA: no
Special precautions for user
no data available

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SECTION 15 - REGULATORY INFORMATION
N/A

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SECTION 16 - ADDITIONAL INFORMATION
N/A

反应信息

• 作为反应物：
  描述：

  1,4-二甲氧基-2-丁炔 在 potassium permanganate 作用下， 生成 甲氧基乙酸
  参考文献：
  名称：

  Dupont, Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, 1910, vol. 150, p. 1524

  摘要：

  DOI：
• 作为产物：
  描述：

  acetylene-bis-magnesium bromide 、 氯甲基甲基醚 生成 1,4-二甲氧基-2-丁炔
  参考文献：
  名称：

  Lespieau, Annales de Chimie (Cachan, France), 1912, vol. <8>27, p. 169

  摘要：

  DOI：
• 作为试剂：
  描述：

  溴甲苯 在 锰 、 cobalt(II) bromide 、 1,4-二甲氧基-2-丁炔 作用下， 以 乙腈 为溶剂， 反应 18.0h， 以86%的产率得到1,2-二苯乙烷
  参考文献：
  名称：

  Cobalt-catalyzed intermolecular stereoselective bisbenzylation of alkynes

  摘要：

  CoBr2/P(OMe)Ph-2 is found to be an effective catalyst-system for intermolecular bisbenzylation of allcynes with various benzyl bromides in the presence of manganese reductant. The transformation can be carried out under mild conditions, giving rise to stereocontrolled cis-1,2-bisbenzylated alkenes in good yields. (C) 2015 Published by Elsevier Ltd.

  DOI：

  10.1016/j.tetlet.2015.02.101

文献信息

• Palladium-Catalyzed Controlled Carbopalladation of Benzyne
  作者：Eiji Yoshikawa、K. V. Radhakrishnan、Yoshinori Yamamoto

  DOI：10.1021/ja001205a

  日期：2000.8.1

  derivatives 16 in moderate yields (ii). The reaction of benzyne precursor 1a with the alkynes 15a−c,f−h in the presence of Pd(OAc)2 (5 mol %)−(o-tolyl)3P (5 mol %) catalyst and CsF (2.0 equiv) in CH3CN gave the phenanthrene derivatives 17 (iii), whereas the reaction of 1a with the alkynes 15a,b,i in the presence of the same catalysts and CsF in CH3CN−toluene gave the indene derivatives 18 in good yields (iv)

  2-三甲基甲硅烷基苯基三氟甲磺酸盐 1a，一种苄基前体，在 CsF（2.0 当量）和 Pd2(dba)3·CHCl3 (2.5 mol %)-dppf (5 mol %) 存在下与烯丙基氯化物 2a-f 反应:1 CH3CN 和 THF 的混合溶剂以良好的产率 (i) 产生菲衍生物 3 及其次要的区域异构体 4，并且 1a 与 2a 和内部炔烃 15a,ce 的反应以中等产率提供萘衍生物 16 （二）。在 Pd(OAc)2 (5 mol %)-(o-tolyl)3P (5 mol %) 催化剂和 CsF (2.0 equiv) 存在下，苄基前体 1a 与炔烃 15a-c,f-h 的反应CH3CN 得到菲衍生物 17 (iii)，而 1a 与炔烃 15a,b,i 在相同催化剂和 CsF 存在下在 CH3CN-甲苯中的反应以良好的产率 (iv) 得到茚衍生物 18。
• Rhodium-Catalyzed Spiro Indenyl Benzoxazine Synthesis via C-H Activation/Annulation of 3-Aryl-2<i>H</i> -Benzo[<i>b</i> ][1,4]oxazines and Alkynes
  作者：Heng Tan、Ronibala Devi Laishram、Xuexin Zhang、Guangrui Shi、Kangkui Li、Jingchao Chen

  DOI：10.1002/ejoc.202000668

  日期：2020.8.9

  A highly efficient synthesis of novel spirocyclic benzoxazine‐indenes from benzoxazine and alkynes via imine directed C–H activation/annulation using rhodium catalyst was reported. The methodology could be applied to various benzoxazines and alkynes, giving the corresponding spiro indenyl benzoxazine as spirocycle products in good yields.

  据报道，通过铑催化的亚胺定向的CH活化/环化反应，由苯并恶嗪和炔烃高效合成了新型螺环苯并恶嗪-茚。该方法可以应用于各种苯并恶嗪和炔烃，以高收率得到相应的螺-茚基苯并恶嗪作为螺环产物。
• Synthesis of 7<i>H</i>-Benzo[<i>e</i>]naphtho[1,8-<i>bc</i>]silines by Rhodium-catalyzed [2 + 2 + 2] Cycloaddition
  作者：Takumi Maesato、Ryo Shintani

  DOI：10.1246/cl.200025

  日期：2020.4.5

  An efficient synthesis of 7H-benzo[e]naphtho[1,8-bc]silines has been developed by a rhodium-catalyzed [2 + 2 + 2] cycloaddition of alkynyl(8-alkynyl-1-naphthyl)silanes with internal alkynes. High c...

  7H-苯并[e]萘并[1,8-bc]硅烷的有效合成是通过炔基（8-炔基-1-萘基）硅烷与内部炔烃的铑催化[2 + 2 + 2]环加成反应开发的. 高...
• Structural complexity through multicomponent cycloaddition cascades enabled by dual-purpose, reactivity regenerating 1,2,3-triene equivalents
  作者：Paul A. Wender、Dennis N. Fournogerakis、Matthew S. Jeffreys、Ryan V. Quiroz、Fuyuhiko Inagaki、Magnus Pfaffenbach

  DOI：10.1038/nchem.1917

  日期：2014.5

  Multicomponent reactions allow for more bond-forming events per synthetic operation, enabling more step- and time-economical conversion of simple starting materials to complex and thus value-added targets. These processes invariably require that reactivity be relayed from intermediate to intermediate over several mechanistic steps until a termination event produces the final product. Here, we report a multicomponent process in which a novel 1,2,3-butatriene equivalent (TMSBO: TMSCH2C≡CCH2OH) engages chemospecifically as a two-carbon alkyne component in a metal-catalysed [5 + 2] cycloaddition with a vinylcyclopropane to produce an intermediate cycloadduct. Under the reaction conditions, this intermediate undergoes a remarkably rapid 1,4-Peterson elimination, producing a reactive four-carbon diene intermediate that is readily intercepted in either a metal-catalysed or thermal [4 + 2] cycloaddition. TMSBO thus serves as an yne-to-diene transmissive reagent coupling two powerful and convergent cycloadditions—the homologous Diels–Alder and Diels–Alder cycloadditions—through a vinylogous Peterson elimination, and enabling flexible access to diverse polycycles. Cascade reactions allow step-economical generation of molecular complexity. Now, a butatriene equivalent, TMSCH2C ≡ CCH2OH, is used to couple two powerful and convergent cycloadditions — the homologous Diels–Alder ([5 + 2]) and the Diels–Alder ([4 + 2]) reactions –– through a vinylogous Peterson elimination, en route to a series of kinase inhibitors inspired by staurosporine.

  多组分反应允许每个合成操作中形成更多的键，从而使简单的起始材料到复杂且具有高附加值的目标物的转化更加步骤和经济。这些过程通常需要在多个机理步骤中将反应性从一个中间体传递到另一个中间体，直到终止事件产生最终产物。这里，我们报告了一种多组分过程，其中一种新型的1,2,3-丁三烯等价物（TMSBO：TMSCH₂C≡CCH₂OH）作为一种双碳炔组分，在金属催化下与乙烯基环丙烷进行[5+2]环加成反应，生成一种中间体环加成物。在反应条件下，这种中间体经历了一种非常快速的1,4-Peterson消除，产生一种活性四碳二烯中间体，容易在金属催化或热[4+2]环加成反应中被截获。TMSBO因此作为从炔到二烯的传递剂，通过邻位Peterson消除连接两个强大的汇聚环加成反应——同源的Diels-Alder和Diels-Alder环加成反应——并实现了对多种多环结构的灵活访问。级联反应允许步骤经济的分子复杂性生成。现在，一种丁三烯等价物，TMSCH₂C≡CCH₂OH，被用来通过邻位Peterson消除连接两个强大的汇聚环加成反应——同源的Diels-Alder（[5+2]）和Diels-Alder（[4+2]）反应，通往一系列受staurosporine启发的激酶抑制剂。
• Rhodium-Catalyzed Carbon–Silicon Bond Activation for Synthesis of Benzosilole Derivatives
  作者：Masahiro Onoe、Katsuaki Baba、Yoonjoo Kim、Yusuke Kita、Mamoru Tobisu、Naoto Chatani

  DOI：10.1021/ja3096174

  日期：2012.11.28

  2-trimethylsilylphenylboronic acid with internal alkynes is developed for the synthesis of 2,3-disubstituted benzosilole derivatives. A range of functional groups, encompassing ketones, esters, amines, aryl bromides, and heteroarenes, are compatible, which provides rapid access to diverse benzosiloles. Sequential 2-fold coupling enables modular synthesis of asymmetrically substituted 1,5-dihydro-1,5-disila-s-indacene

  开发了铑催化的 2-三甲基甲硅烷基苯基硼酸与内部炔烃的偶联反应，用于合成 2,3-二取代的苯并硅氧烷衍生物。包括酮、酯、胺、芳基溴化物和杂芳烃在内的一系列官能团是相容的，从而可以快速获得各种苯并硅氧烷。顺序 2 倍偶联能够模块化合成不对称取代的 1,5-dihydro-1,5-disila-s-indacene，这是一种有机电子学中的 π 扩展分子。就机理而言，该反应涉及三烷基甲硅烷基中的 C(烷基)-Si 键的断裂，这通常需要极其苛刻的活化条件。包括取代基影响在内的机理研究表明，C-Si 键断裂不会通过超配位硅物种进行，而是通过铑介导的活化过程。还证明了该反应在 Si-手性苯甲硅烷的催化不对称合成中的潜在用途。

表征谱图