5,5-二甲基-2,2-并噻吩 | 16303-58-5

• 物质功能分类: 医药中间体 - 杂环化合物 - 噻吩类化合物
• 分子结构分类: 有机化合物 - 有机杂环化合物 - 双噻吩和低聚噻吩
• 中文名称: 5,5-二甲基-2,2-并噻吩
• 中文别名: 5,5'-二甲基-2,2'-并噻吩
• 英文名称: 5,5'-dimethyl-2,2'-dithiophene
• 英文别名: 5,5'-dimethyl-2,2'-bithiophene；5,5′-dimethyl-2,2′-bithiophene；2-methyl-5-(5-methylthiophen-2-yl)thiophene
• CAS: 16303-58-5
• 化学式: C₁₀H₁₀S₂
• mdl: MFCD01927313
• 分子量: 194.321
• InChiKey: DKHDQTBBXQMFPP-UHFFFAOYSA-N

物化性质

• 熔点：
  65-68 °C
• 沸点：
  262.9±35.0 °C(Predicted)
• 密度：
  1.169±0.06 g/cm3(Predicted)
• 稳定性/保质期：

  遵照规定使用和储存，则不会分解。

计算性质

• 辛醇/水分配系数(LogP)：
  3.8
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  56.5
• 氢给体数：
  0
• 氢受体数：
  2

安全信息

• 安全说明：
  S24/25
• 海关编码：
  2934999090
• 储存条件：
  存放在阴凉干燥处即可。

SDS

Name:	5 5 -Dimethyl-2 2 -bithiophene Material Safety Data Sheet
Synonym:	5,5'-Dimethyl-2,2'-bithienyl
CAS:	16303-58-5

Section 1 - Chemical Product MSDS Name:5 5 -Dimethyl-2 2 -bithiophene Material Safety Data Sheet
Synonym:5,5'-Dimethyl-2,2'-bithienyl

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Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS

CAS#	Chemical Name	content	EINECS#
16303-58-5	5,5'-Dimethyl-2,2'-bithiophene	100	unlisted

Hazard Symbols: None Listed.
Risk Phrases: None Listed.

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Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
The toxicological properties of this material have not been fully investigated.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation. May be harmful if absorbed through the skin.
Ingestion:
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated. May be harmful if swallowed.
Inhalation:
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated. May be harmful if inhaled.
Chronic:
No information found.

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Section 4 - FIRST AID MEASURES
Eyes: In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Get medical aid.
Skin:
In case of contact, flush skin with plenty of water. Remove contaminated clothing and shoes. Get medical aid if irritation develops and persists. Wash clothing before reuse.
Ingestion:
If swallowed, do not induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. Get medical aid.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.

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Section 5 - FIRE FIGHTING MEASURES
General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.
Extinguishing Media:
Use water spray, dry chemical, carbon dioxide, or chemical foam.

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Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions.
Provide ventilation.

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Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid breathing dust.
Storage:
Store in a tightly closed container. Store in a dry area. Keep refrigerated. (Store below 4C/39F.)

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Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 16303-58-5: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

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Section 9 - PHYSICAL AND CHEMICAL PROPERTIES

Physical State: Crystalline powder
Color: yellowish
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 64 - 66 deg C
Autoignition Temperature: Not available.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water:
Specific Gravity/Density:
Molecular Formula: C10H10S2
Molecular Weight: 194.32

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Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Dust generation, excess heat.
Incompatibilities with Other Materials:
Strong oxidizing agents.
Hazardous Decomposition Products:
Carbon monoxide, oxides of sulfur, carbon dioxide.
Hazardous Polymerization: Has not been reported

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Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 16303-58-5 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
5,5'-Dimethyl-2,2'-bithiophene - Not listed by ACGIH, IARC, or NTP.

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Section 12 - ECOLOGICAL INFORMATION

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Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.

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Section 14 - TRANSPORT INFORMATION

IATA
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing Group:
IMO
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing Group:
RID/ADR
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing group:

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Section 15 - REGULATORY INFORMATION

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: Not available.
Risk Phrases:
Safety Phrases:
S 24/25 Avoid contact with skin and eyes.
WGK (Water Danger/Protection)
CAS# 16303-58-5: No information available.
Canada
None of the chemicals in this product are listed on the DSL/NDSL list.
CAS# 16303-58-5 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 16303-58-5 is not listed on the TSCA inventory.
It is for research and development use only.

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SECTION 16 - ADDITIONAL INFORMATION
N/A

反应信息

• 作为反应物：
  描述：

  5,5-二甲基-2,2-并噻吩 在 HOF* CH₃CN 作用下， 以 二氯甲烷 、 乙腈 为溶剂， 以85%的产率得到5,5'-dimethyl-[2,2']bithiophene 1,1,1',1'-tetraoxide
  参考文献：
  名称：

  使用HOF.CH3CN合成[所有] -S，S-二氧化物低聚噻吩。

  摘要：

  DOI：

  10.1002/anie.200501681
• 作为产物：
  描述：

  2-甲基噻吩 在 palladium diacetate 、 potassium carbonate 、 三甲基乙酸 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 20.0h， 以11%的产率得到5,5-二甲基-2,2-并噻吩
  参考文献：
  名称：

  在 Pd/Ag 共催化交叉脱氢偶联聚合中由加速扩链引起的 Carothers 方程的一个例外

  摘要：

  Carothers 方程常用于预测聚合中小分子反应的效用。在本研究中，我们介绍了 Pd/Ag 共催化交叉脱氢偶联 (CDC) 聚合以合成 3,3'-二己基-2,2'-联噻吩和 2, 2',3,3',5,5',6,6'-八氟联苯，这与 Carothers 方程背道而驰。发现第二次扩链交叉偶联比第一次交叉偶联和同系偶联副反应（至少快一个数量级）更有效地进行，导致出乎意料的低同系偶联缺陷和高分子量聚合物。动力学分析表明，C-H 键活化在第一次交叉偶联中是速率决定性的，但在第二次交叉偶联中不是。基于 DFT 计算，第二次交叉偶联中的高交叉偶联率归因于 Pd 介导的 C-H 键活化过渡态中 Pd-噻吩的强相互作用，这降低了 Pd 介导的 C-H 键活化的能垒。这些结果具有超越聚合的意义，可用于简化各种分子的合成，其中 C-H 键活化可能是限制因素。

  DOI：

  10.1021/jacs.1c12599

文献信息

• Direct C–H Arylation of Thiophenes at Low Catalyst Loading of a Phosphine-Free Bis(alkoxo)palladium Complex
  作者：Yabo Li、Jingran Wang、Mengmeng Huang、Zhiwei Wang、Yusheng Wu、Yangjie Wu

  DOI：10.1021/jo402745b

  日期：2014.4.4

  An efficient phosphine-free direct C–H arylation of thiophenes at the α-position has been developed at low catalyst loading of bis(alkoxo)palladium complex (Cat.I, 0.1–0.2 mol %). The developed synthetic method can be applied to the synthesis of α-aryl/heteroaryl thiophenes from aryl or heteroaryl bromides in good to excellent yields and is compatible with the substrates bearing electron-donating or

  在双（烷氧基）钯配合物（Cat.I，0.1-0.2 mol％）的低催化剂负载下，已开发出一种有效的无磷的噻吩在α位上无膦直接CH芳基化的化合物。所开发的合成方法可用于从芳基或杂芳基溴化物以良好至优异的产率合成α-芳基/杂芳基噻吩，并且与带有给电子或吸电子基团的底物相容。噻吩2位和5位的反应性是相同的，并且在最佳条件下不依赖于空间位阻。该条件还可以以高转化率应用于其他杂环部分，例如苯并噻吩，苯并呋喃和吡咯。
• Novel Carbazole Compound, and Polymer Thereof
  申请人：HIROSE Hidekazu

  公开号：US20080312453A1

  公开（公告）日：2008-12-18

  The present invention provides a carbazole compound represented by the following formula (I): wherein each Ar 1 independently represents a substituted or unsubstituted monovalent aromatic group or an aromatic group containing a heteroring, and R 1 and each R 2 independently represent a hydrogen atom, an alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group.

  本发明提供了一种由下式(I)表示的咔唑化合物：其中，每个Ar1独立地表示一个取代的或未取代的单价芳香族基团或含杂环的芳香族基团，R1和每个R2独立地表示一个氢原子、一个烷基、一个取代的或未取代的芳基或一个取代的或未取代的芳烷基。
• Fluoride-Promoted Cross-Coupling of Chloro(mono-, di-, or triphenyl)germanes with Aryl Halides in “Moist” Toluene. Multiple Transfer of the Phenyl Group from Organogermane Substrates and Comparison of the Coupling Efficiencies of Chloro(phenyl)germanes with their Corresponding Stannane and Silane Counterparts
  作者：Jean-Philippe Pitteloud、Zun-Ting Zhang、Yong Liang、Laura Cabrera、Stanislaw F. Wnuk

  DOI：10.1021/jo101848f

  日期：2010.12.3

  efficient activation by fluoride to promote transfer of one, two, or three phenyl groups from the organogermanes. The corresponding chlorophenylstannanes were found to be more reactive than chlorophenylsilanes, which in turn were more effective than chlorophenylgermanes. One chloride ligand on the Ge or Si center allows efficient activation by fluoride to promote transfer of up to three aryl groups

  三氯苯基-、二氯二苯基-和氯三苯基锗烷在四丁基氟化铵的甲苯中加入测量的水量。Ge 中心的一个氯化物配体允许氟化物有效活化，以促进一个、两个或三个苯基基团从有机锗烷转移。发现相应的氯苯基锡烷比氯苯基硅烷更具反应性，而氯苯基硅烷又比氯苯基锗烷更有效。Ge 或 Si 中心的一个氯化物配体允许氟化物有效活化，以促进多达三个芳基从锗烷或硅的转移。然而，Sn 中心不需要卤配体，因为在氟化物促进的与芳基卤化物的偶联过程中，四苯基锡有效地转移了多达四个苯基。19 F NMR 研究表明，氟苯基锗烷和高价锗酸盐物质的形成可能是中间体。
• Sterically controlled C–H/C–H homocoupling of arenes <i>via</i> C–H borylation
  作者：Xiaocong Pei、Guan Zhou、Xuejing Li、Yuchen Xu、Resmi C. Panicker、Rajavel Srinivasan

  DOI：10.1039/c9ob00995g

  日期：——

  A mild one-pot protocol for the synthesis of symmetrical biaryls by sequential Ir-catalyzed C-H borylation and Cu-catalyzed homocoupling of arenes is described. The regiochemistry of the biaryl formed is sterically controlled as dictated by the C-H borylation step. The methodology is also successfully extended to heteroarenes. Some of the products obtained by this approach are impossible to obtain

  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。
• PROTEIN CROSS-LINKING INHIBITOR
  申请人：Mikoshiba Katsuhiko

  公开号：US20110212919A1

  公开（公告）日：2011-09-01

  The present invention provides a protein cross-linking inhibitor containing a compound represented by any of the following formulas ( 1 )-( 13 ), or a pharmaceutically acceptable salt thereof: R 3 —[—X—B(ZR 1 )—Y—B(ZR 2 )—W—] n —R 4 ,  (1) R 3 —[—X—B(ZR 1 )—Y—] n —R 4 ,  (2) R 3 —[—B(ZR 1 )—Y—B(ZR 2 )—W—] n —R 4 ,  (3) R 3 —[—X—B(ZR 1 )—] n —R 4 ,  (4) R 3 —[—B(ZR 2 )—W—] n —R 4 ,  (5) R 3 —X—B(ZR 1 )-T[B(ZR 2 )—W—R 4 ] 2 ,  (6) R 3 —B(OH) 2 ,  (7) R 3 —B(ZR 1 )—X—B(ZR 2 )—R 4 ,  (8) R 3 —B(R 1 )—O—B(R 2 )—R 4 ,  (9) R 3 —[—X—B(ZR 1 )—Y—B(ZR 2 )—] n —R 4 ,  (10) R 3 —[—X—B(ZR 1 )—Y—B(ZR 2 )—W-Q-] n —R 4 ,  (11) R 3 —[—P—X—B(ZR 1 )—Y—B(ZR 2 )—W—] n —R 4 ,  (12) [R 3 —X—B(ZR 1 )—Y] 2 B(ZR 2 ),  (13) wherein each symbol is as defined in the DESCRIPTION.

  当前发明提供了一种含有由以下任一公式（1）-（13）表示的化合物的蛋白交联抑制剂，或其药用可接受的盐：R3—[—X—B(ZR1)—Y—B(ZR2)—W—]n—R4，  (1)R3—[—X—B(ZR1)—Y—]n—R4，  (2)R3—[—B(ZR1)—Y—B(ZR2)—W—]n—R4，  (3)R3—[—X—B(ZR1)—]n—R4，  (4)R3—[—B(ZR2)—W—]n—R4，  (5)R3—X—B(ZR1)-T[B(ZR2)—W—R4]2，  (6)R3—B(OH)2，  (7)R3—B(ZR1)—X—B(ZR2)—R4，  (8)R3—B(R1)—O—B(R2)—R4，  (9)R3—[—X—B(ZR1)—Y—B(ZR2)—]n—R4，  (10)R3—[—X—B(ZR1)—Y—B(ZR2)—W-Q-]n—R4，  (11)R3—[—P—X—B(ZR1)—Y—B(ZR2)—W—]n—R4，  (12)[R3—X—B(ZR1)—Y]2B(ZR2)，  (13)其中每个符号如说明书中所定义。