2-Methyl-2-butene 2-甲基-2-丁烯

规格: 90%
CAS: 513-35-9
产品编号: H76378
MDL: MFCD00009276
品牌: INFI

烯烃是一类含有C—C双键的烃类化合物,具有较高的反应活性和化学稳定性,在药物合成领域具有广泛的应用价值。例如,在青霉胺抗生素的合成中,烯烃是重要的中间体.

 Alder(-ene)烯反应,又叫作氢-烯丙基加成反应,是一个带有烯丙基氢的烯烃和一个亲烯体之间发生的反应。这个反应由Kurt Alder(阿尔德)和他的导师Otto Diels(狄尔斯)共同发现,在1950年他们二人因对双烯合成反应(Diels-Alder反应)的研究共享诺贝尔奖。这是一个官能团转化反应,包含有双键以及[1,5]氢迁移,产物是一个双键移动至原烯丙基位置的取代烯烃。烯反应是一种有用的形成C—C键的方法,用于合成复杂分子和天然产物。

  反应过程是亲烯体和烯丙基化合物的六中心σ键迁移。烯烃的π键、烯丙位的sp3-σC—H键都参与周环反应。在此过程中双键的迁移、新的C—HC—C σ键的形成是同时进行的。

   南开大学化学学院李鑫、程津培团队报道了在手性磷酸和三(五氟苯基)(B(C6F5)3/CPA)催化下,2-芳基-3H-吲哚酮为亲烯体,α-甲基苯乙烯为烯烃的首例无金属催化的酮亚胺不对称ene反应。

以上图片来源于网络



Chemical Name2-Methyl-2-Butene
Synonym (CH3)2C=CHCH3 1,1,2-Trimethylethylen 1,4-polyisoprene 2-METHYL-2-BUTENE 2-METHYLBUTENE-2 2-Methyl-buten-(2) 2-Methylbut-2-ene 2-butene, 2-methyl- 2-methylbutene-2 2-甲基-2-丁烯 溶液 3-Methyl-2-butene 3-methyl-but-2-ene 3-甲-2-丁烯 AmyleneTrimethylethylene B-Isoamylen Methyl butene N-AMYLENE PENTENE TRIMETHYLETHYLENE Trimethyl-äthylen Trimethyläthylen alpha,eta-amylene amylene beta-异戊烯 n-Amylene poly(cis-1,4-isoprene) trimethyl-ethylen trimethylethylene[qr] ß-Isoamylene Α-異戊烯 β-Isoamylene β-异戊烯 β-异戊烯 戊烯 异戊烯 甲基丁烯类
MDL NumberMFCD00009276
CAS Number513-35-9
PubChem Substance ID10553
EC Number208-156-3
Beilstein Registry Number1(4)820
Merck Number607
Chemical Name Translation2-甲基-2-丁烯
Reaxys-RN1361353
LabNetwork Molecule IDLN00195060
InChIInChI=1S/C5H10/c1-4-5(2)3/h4H,1-3H3
GHS Symbol
WGK Germany3
Hazard statements
  • H224 Extremely flammable liquid and vapour 极端易燃液体和蒸气
  • H225 Highly flammable liquid and vapour 高度易燃液体和蒸气
  • H302 Harmful if swallowed 吞食有害
  • H304 May be fatal if swallowed and enters airways 吞食和进入呼吸道可能致命
  • H315 Causes skin irritation 会刺激皮肤
  • H319 Causes serious eye irritation 严重刺激眼睛
  • H335 May cause respiratory irritation 可能导致呼吸道刺激
  • H336 May cause drowsiness or dizziness 肯能导致嗜睡或头晕
  • H341 Suspected of causing genetic defects 怀疑导致遗传性缺陷
  • H350 May cause cancer 可能致癌
  • H351 Suspected of causing cancer 怀疑致癌
  • H411 Toxictoaquaticlifewithlonglastingeffects 对水生生物有毒性并具有长期影响。
  • H412 Harmfutoaquaticlifewithlonglastingeffects 对水生生物有害并具有长期影响。
    Personal Protective Equipment Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US)
    Precautionary statements
    • P201 Obtain special instructions before use. 使用前获取专门指示。
    • P202 Do not handle until all safety precautions have been read and understood. 已阅读并理解所有的安全预防措施之前,切勿操作。
    • P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. 远离热源/火花/明火/热的表面。——禁止吸烟。
    • P233 Keep container tightly closed. ?保持容器密闭。
    • P240 Ground/bond container and receiving equipment. 与地面接触/连接集装箱和接受设备。
    • P241 Use explosion-proof electrical/ventilating/lighting/…/equipment. 使用防爆电气/通风/照明/ .../设备。
    • P242 Use only non-sparking tools. 只能使用无火花工具。
    • P243 Take precautionary measures against static discharge. 采取预防措施,防止静电放电。
    • P261 Avoid breathing dust/fume/gas/mist/vapours/spray. 避免吸入粉尘/烟/气体/烟雾/蒸汽/喷雾。
    • P264 Wash hands thoroughly after handling. 处理后要彻底洗净双手。
    • P270 Do not eat, drink or smoke when using this product. 使用本产品时不要吃东西,喝水或吸烟。
    • P271 Use only outdoors or in a well-ventilated area.? 只能在室外或通风良好的地方使用。
    • P273 Avoid release to the environment. 避免释放到环境中。
    • P280 Wear protective gloves/protective clothing/eye protection/face protection. 戴防护手套/防护服/眼睛的保护物/面部保护物。
    • P281 Use personal protective equipment as required. 使用所需的个人防护装备。
    • P301+P310
    • P301+P312
    • P301+P312+P330
    • P302+P352
    • P303+P361+P353
    • P304+P340
    • P304+P340+P312
    • P305+P351+P338
    • P308+P313
    • P312 Call a POISON CENTER or doctor/physician if you feel unwell. 如果你感觉不适,呼叫解毒中心或医生/医师。
    • P321 Specific treatment (see … on this label). 具体治疗(见本标签上的)。
    • P330 Rinse mouth. 漱口
    • P331 Do NOT induce vomiting.. 不要催吐。
    • P332+P313
    • P362 Take off contaminated clothing and wash before reuse. 脱掉污染的衣服,清洗后方可重新使用
    • P370+P378
    • P391 Collect spillage. Hazardous to the aquatic environment 收集对水环境有危害的泄漏物。
    • P403+P233
    • P403+P235
    • P405 Store locked up. 上锁保管。
    • P501 Dispose of contents/container to..… 处理内容物/容器.....
      Signal word Danger
      Packing GroupII
      UN Number UN 2460 3/PG 2 UN2460 1108/2460 2460
      Risk Statements
      • R12 Extremely flammable 极端易燃
      • R11 Highly flammable 非常易燃
      • R19 May form explosive peroxides 可能生成易爆的过氧化物质
      • R36/37/38 Irritating to eyes, respiratory system and skin 对眼睛、呼吸系统和皮肤有刺激性
      • R51/53
      • R65 Harmful: may cause lung damage if swallowed 若吞咽可能伤害肺部器官
      • R22 Harmful if swallowed 吞咽有害
      • R36/37 Irritating to eyes and respiratory system 对眼睛和呼吸系统有刺激性
      • R40 Limited evidence of a carcinogenic effect 有限证据表明其致癌作用
      • R52/53
      • R67 Vapours may cause drowsiness and dizziness 蒸汽可能导致嗜睡和昏厥
      • R68 Possible risk of irreversible effects 可能有不可挽回的作用的危险
      • R38 Irritating to skin 刺激皮肤
        Safety Statements
        • S61 Avoid release to the environment. Refer to special instructions/safety data sheet 避免释放到环境中,参考特别指示/安全收据说明书;
        • S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 眼睛接触后,立即用大量水冲洗并征求医生意见;
        • S36/37 Wear suitable protective clothing and gloves 穿戴适当的防护服和手套;
        • S62 If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label where possible 吞食后不要催吐:立即求医并出示该容器或标签;
        • S16 Keep away from sources of ignition - No smoking 远离火源,禁止吸烟;
        • S45 In case of accident or if you feel unwell seek medical advice immediately (show the label where possible) 发生事故时或感觉不适时,立即求医(可能时出示标签);
        • S23 Do not breathe gas/fumes/vapour/spray (appropriate wording to be specified by the manufacturer) 不要吸入气体/烟雾/蒸汽/喷雾;
        • S33 Take precautionary measures against static discharges 对静电采取预防措施;
        • S57 Use appropriate containment to avoid environmental contamination 使用适当容器避免环境污染;
        • S36 Wear suitable protective clothing 穿戴适当的防护服;
        • S60 This material and its container must be disposed of as hazardous waste 该物质及其容器必须作为危险废物处置;
        • S3 Keep in a cool place 保存在阴凉处;
        • S9 Keep container in a well-ventilated place 保持容器在通风良好的场所;
        • S29 Do not empty into drains 不要排入下水道;
        • S36/37/39 Wear suitable protective clothing, gloves and eye/face protection 穿戴适当的防护服、手套和眼睛/面保护;
          Hazard Codes F,Xn,N F+;Xn;N F,Xn F,Xn,N,F+
          Hazard Class3
          RTECSEM7580000
          Storage condition Flammables area 异吸潮,密封2-8℃保存。
          Warnings 危化品目录(2015)
          Restrict 危险品
        • 用于脱氢制异戊二烯,也作为合成橡胶、树脂和有机合成的中间体。提高汽油辛烷值的掺合剂。气相色谱对比样品。
        • {uni_hamburg} Short: II/27B
        • {SNA}
        • {uni_hamburg} Short: III/38A
        • {ALD} Merck: 14,607
        • 513-35-9 H76378 2-Methyl-2-butene
2-甲基-2-丁烯

          化学属性

          Mol. FormulaC5H10
          Mol. Weight70.14
          Refractive index1.3840 to 1.3900
          Vapor Density2.4 (vs air)
          Boiling Point35 - 38 °C(lit.)
          Density0.662
          Melting Point-131 - 137 °C
          Vapor Pressure14.34 psi ( 55 °C)
          Flash Point−4 °F
          TSCAYes
          Stability易吸潮
          Solubility不溶于水,溶于乙醇等多数有机溶剂。

          *以上化合物性质及应用等信息仅供参考