2,4-二溴-2,4-二甲基-3-戊酮 | 17346-16-6

• 物质功能分类: 化学试剂 - 有机试剂 - 脂肪酮(含烯醇)
• 分子结构分类: 有机化合物 - 有机氧化合物
• 中文名称: 2,4-二溴-2,4-二甲基-3-戊酮
• 中文别名: 2,4-二甲基-3-戊酮
• 英文名称: 2,4-dibromo-2,4-dimethylpentan-3-one
• 英文别名: 2,4-dibromo-2,4-dimethyl-3-pentanone
• CAS: 17346-16-6
• 化学式: C₇H₁₂Br₂O
• 分子量: 271.98
• InChiKey: SWSOAIMZWLDPST-UHFFFAOYSA-N

物化性质

• 沸点：
  89-91 °C13 mm Hg(lit.)
• 密度：
  1.61 g/mL at 25 °C(lit.)
• 闪点：
  163 °F
• 稳定性/保质期：
  常温常压下稳定，避免与氧化物接触。

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  10
• 可旋转键数：
  2
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.86
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

安全信息

• 危险等级：
  9
• 危险品标志：
  Xi
• 安全说明：
  S26
• 危险类别码：
  R36/37/38
• WGK Germany：
  3
• 海关编码：
  2914700090
• 危险品运输编号：
  UN 3334
• 储存条件：
  常温下应密闭避光，存放在通风干燥处。

SDS

Name:	2 4-Dibromo-2 4-Dimethyl-3-Pentanone 98% Material Safety Data Sheet
Synonym:	None Known
CAS:	17346-16-6

Section 1 - Chemical Product MSDS Name:2 4-Dibromo-2 4-Dimethyl-3-Pentanone 98% Material Safety Data Sheet
Synonym:None Known

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Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS

CAS#	Chemical Name	content	EINECS#
17346-16-6	2,4-Dibromo-2,4-Dimethyl-3-Pentanone	98%	unlisted

Hazard Symbols: XI
Risk Phrases: 10 36/37/38

---

Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Flammable. Irritating to eyes, respiratory system and skin.Lachrymator (substance which increases the flow of tears).
Potential Health Effects
Eye:
Produces irritation, characterized by a burning sensation, redness, tearing, inflammation, and possible corneal injury. Lachrymator (substance which increases the flow of tears). May cause chemical conjunctivitis and corneal damage.
Skin:
Causes skin irritation. May cause cyanosis of the extremities.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated. Ingestion of large amounts may cause CNS depression.
Inhalation:
Causes respiratory tract irritation. The toxicological properties of this substance have not been fully investigated. Aspiration may lead to pulmonary edema. Vapors may cause dizziness or suffocation. May cause burning sensation in the chest.
Chronic:
Effects may be delayed.

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Section 4 - FIRST AID MEASURES
Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid. Do NOT allow victim to rub eyes or keep eyes closed.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Ingestion:
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water. Wash mouth out with water.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. Do NOT use mouth-to-mouth resuscitation.
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. Vapors may form an explosive mixture with air.
Vapors can travel to a source of ignition and flash back. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Will burn if involved in a fire. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. Flammable liquid and vapor. Vapors may be heavier than air. They can spread along the ground and collect in low or confined areas. Runoff from fire control or dilution water may cause pollution.
Extinguishing Media:
For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective. Do NOT use straight streams of water.

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Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, observing precautions in the Protective Equipment section. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. A vapor suppressing foam may be used to reduce vapors.

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Section 7 - HANDLING and STORAGE
Handling:
Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Avoid breathing dust, vapor, mist, or gas. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Keep away from heat, sparks and flame. Avoid ingestion and inhalation.
Use only in a chemical fume hood. Wash clothing before reuse. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Storage:
Keep away from sources of ignition. Store in a cool, dry place.
Store in a tightly closed container. Flammables-area.

---

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 general or local explosion-proof ventilation to keep airborne levels to acceptable levels.
Exposure Limits CAS# 17346-16-6: 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: Liquid
Color: clear colorless to light amber
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: 57 - 58 deg C @ 12.00mmHg
Freezing/Melting Point: Not available.
Autoignition Temperature: Not available.
Flash Point: 54 deg C ( 129.20 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water:
Specific Gravity/Density: 1.4000g/cm3
Molecular Formula: C7H12BrO
Molecular Weight: 191.98

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Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable at room temperature in closed containers under normal storage and handling conditions.
Conditions to Avoid:
Incompatible materials, ignition sources, excess heat.
Incompatibilities with Other Materials:
Oxidizing agents.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide.
Hazardous Polymerization: Has not been reported

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Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 17346-16-6 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
2,4-Dibromo-2,4-Dimethyl-3-Pentanone - 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: FLAMMABLE LIQUID, N.O.S.
Hazard Class: 3
UN Number: 1993
Packing Group: III
IMO
Shipping Name: FLAMMABLE LIQUID, N.O.S.
Hazard Class: 3.3
UN Number: 1993
Packing Group: III
RID/ADR
Shipping Name: FLAMMABLE LIQUID, N.O.S.
Hazard Class: 3
UN Number: 1993
Packing group: III

---

Section 15 - REGULATORY INFORMATION

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XI
Risk Phrases:
R 10 Flammable.
R 36/37/38 Irritating to eyes, respiratory system
and skin.
Safety Phrases:
S 9 Keep container in a well-ventilated place.
S 16 Keep away from sources of ignition - No
smoking.
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 33 Take precautionary measures against static
discharges.
S 37/39 Wear suitable gloves and eye/face
protection.
WGK (Water Danger/Protection)
CAS# 17346-16-6: No information available.
Canada
None of the chemicals in this product are listed on the DSL/NDSL list.
CAS# 17346-16-6 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 17346-16-6 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：

  2,4-二溴-2,4-二甲基-3-戊酮 在 diiron nonacarbonyl 作用下， 以 环己烷 为溶剂， 生成 5-Hexen-3-one, 2,4,4-trimethyl-6-phenyl-, (Z)-
  参考文献：
  名称：

  Carbon-carbon bond formation promoted by transition metal carbonyls. 20. Iron carbonyl promoted reaction of .alpha.,.alpha.'-dibromo ketones and aromatic olefins leading to 3-arylcyclopentanones. The [3 + 2] cycloaddition involving an allylic cation

  摘要：

  DOI：

  10.1021/ja00474a022
• 作为产物：
  描述：

  2,4-二甲基-3-戊酮 在 溴 作用下， 以 氯仿 为溶剂， 生成 2,4-二溴-2,4-二甲基-3-戊酮
  参考文献：
  名称：

  BACE 抑制剂 BI 1147560 BS 和 BI 1181181 MZ 的工艺开发

  摘要：

  描述了两种β位淀粉样蛋白前体蛋白裂解酶 (BACE) 抑制剂的大规模合成的发展。发现了新的方法来克服现有程序的安全性和可扩展性问题。通过将氨基甲酰基阴离子添加到N-亚磺酰基酮亚胺，以高非对映选择性形成空间位阻季新戊基立构中心。芳基腈是通过不含钯和氰化物的亲电氰化反应安装的，该氰化反应受芳基镁衍生物与二甲基丙二腈的转腈作用影响。基于丙二酸二乙酯和二苄胺起始原料，设计了一条通往氧杂环丁基甲基胺侧链的安全路线。开发了一种温和的烯胺氟化反应，用于合成氟代异丁胺侧链。

  DOI：

  10.1021/acs.oprd.2c00325

文献信息

• A convenient new synthesis of α-fluorocarbonyl compounds
  作者：Albert J. Fry、Yoelit Migron

  DOI：10.1016/s0040-4039(01)95408-5

  日期：1979.1

  The reaction between tertiary α-bromo ketones or aldehydes and silver tetrafluoroborate in ether affords α-fluorocarbonyl compounds. Neighboring group participation by the carbonyl oxygen is proposed to account for the products and by-products.

  叔α-溴酮或醛与四氟硼酸银在乙醚中的反应得到α-氟羰基化合物。提议由羰基氧的相邻基团参与来解释产物和副产物。
• Branched amides of L-aspartyl-D-amino acid dipeptides
  申请人：Pfizer Inc.

  公开号：US04454328A1

  公开（公告）日：1984-06-12

  Amides of L-aspartyl-D-amino acid dipeptides of the formula ##STR1## and physiologically acceptable cationic and acid addition salts thereof wherein R.sup.a is CH.sub.2 OH or CH.sub.2 OCH.sub.3 ; R is a branched member selected from the group consisting of fenchyl, diisopropylcarbinyl, d-methyl-t-butylcarbinyl, d-ethyl-t-butylcarbinyl, di-t-butylcarbinyl, 2-methylthio-2,4-dimethylpentan-3-yl, ##STR2## where at least one of R.sup.3, R.sup.4, R.sup.5, R.sup.6 is alkyl having from one to four carbon atoms and the remainder are hydrogen or alkyl having from one to four carbon atoms, X is O, S, SO, SO.sub.2, C.dbd.O or CHOH; m is zero or 1-4, n and p are each zero, 1, 2 or 3 where the sum of n+p is not greater than 3 and the sum of the carbon atoms in R.sup.3, R.sup.4, R.sup.5 and R.sup.6 is not greater than six, and when both of R.sup.3 and R.sup.4 or R.sup.5 and R.sup.6 are alkyl they are methyl or ethyl, ##STR3## where one of R.sup.7, R.sup.8, R.sup.9 is alkyl having from one to four carbon atoms and the remainder are hydrogen or alkyl having from one to four carbon atoms and the sum of the carbon atoms in R.sup.7, R.sup.8 and R.sup.9 is not greater than six, m and q are the same or different and each have the values previously defined for m; ##STR4## where each of R.sup.12 and R.sup.13 are methyl or ethyl, or R.sup.12 is hydrogen and R.sup.13 is alkyl having from one to four carbon atoms, Z is O or NH and t is 1 or 2, ##STR5## where W is 1-4, R.sup.14 and R.sup.16 are each alkyl having from one to four carbon atoms, R.sup.15 is H, OH, methyl or ethyl and the sum of the carbon atoms in R.sup.14, R.sup.15 and R.sup.16 is not greater than six and when both of R.sup.14 and R.sup.15 are alkyl they are methyl or ethyl, and ##STR6## where R.sup.17 and R.sup.19 are alkyl having from one to four carbon atoms, R.sup.18 and R.sup.20 are H or alkyl having one to two carbon atoms, A is OH and B is H, OH or CH.sub.3 and taken together A and B are ##STR7## where the sum of the carbon atoms in R.sup.17, R.sup.18, R.sup.19 and R.sup.20 is not greater than six and when both of R.sup.17 and R.sup.18 or R.sup.19 and R.sup.20 are alkyl they are methyl or ethyl; said amides are potent sweeteners having advantages over the prior art, edible compositions containing them, methods for their use in edible compositions and novel amide intermediates useful in their production.

  L-天冬氨酸-D-氨基酸二肽的酰胺，其化学式为##STR1##及其生理上可接受的阳离子和酸盐，其中R.sup.a为CH.sub.2 OH或CH.sub.2 OCH.sub.3；R为从茴香基、二异丙基甲基、d-甲基-t-叔丁基甲基、d-乙基-t-叔丁基甲基、二-t-叔丁基甲基、2-甲硫基-2,4-二甲基戊烷-3-基，##STR2##中选择的支链成员，其中R.sup.3、R.sup.4、R.sup.5、R.sup.6中至少有一个是具有一到四个碳原子的烷基，其余为氢或具有一到四个碳原子的烷基，X为O、S、SO、SO.sub.2、C.dbd.O或CHOH；m为零或1-4，n和p分别为零、1、2或3，其中n+p的总和不大于3，R.sup.3、R.sup.4、R.sup.5和R.sup.6中的碳原子总和不大于六，当R.sup.3和R.sup.4或R.sup.5和R.sup.6中的两个均为烷基时，它们为甲基或乙基，##STR3##其中R.sup.7、R.sup.8、R.sup.9中的一个是具有一到四个碳原子的烷基，其余为氢或具有一到四个碳原子的烷基，R.sup.7、R.sup.8和R.sup.9中的碳原子总和不大于六，m和q相同或不同，且具有先前定义的m的值；##STR4##其中R.sup.12和R.sup.13中的每一个均为甲基或乙基，或R.sup.12为氢且R.sup.13为具有一到四个碳原子的烷基，Z为O或NH，t为1或2，##STR5##其中W为1-4，R.sup.14和R.sup.16均为具有一到四个碳原子的烷基，R.sup.15为H、OH、甲基或乙基，R.sup.14、R.sup.15和R.sup.16中的碳原子总和不大于六，当R.sup.14和R.sup.15均为烷基时，它们为甲基或乙基，以及##STR6##其中R.sup.17和R.sup.19为具有一到四个碳原子的烷基，R.sup.18和R.sup.20为H或具有一到二个碳原子的烷基，A为OH，B为H、OH或CH.sub.3，A和B一起为##STR7##其中R.sup.17、R.sup.18、R.sup.19和R.sup.20中的碳原子总和不大于六，当R.sup.17和R.sup.18或R.sup.19和R.sup.20中的两个均为烷基时，它们为甲基或乙基；所述酰胺是具有优于先前技术的优点的强甜味剂，包含它们的可食用组合物，其在可食用组合物中的使用方法以及在其生产中有用的新型酰胺中间体。
• Action des homocuprates sur les cetones α,α′-dibromees. Une nouvelle methode de synthese de cetones encombrees
  作者：C. Lion、J.-E. Dubois

  DOI：10.1016/0040-4020(75)85061-7

  日期：1975.1

  The reaction between alkyllithium homocuprates and α,α′-dibromoketones permits the monoalkylation of ketones after hydrolysis of the reaction intermediate; the latter reacts with an excess of alkyl halide and gives the dialkylated product. Four alkylation reactions (methylation, ethylation, isopropylation and t-butylation) of α,α′-dibromoketones have been studied. While monoalkylation leads to secondary/primary

  烷基锂均铜酸盐与α，α'-二溴代酮之间的反应使反应中间体水解后酮单烷基化。后者与过量的烷基卤反应，得到二烷基化产物。研究了α，α′-二溴酮的四个烷基化反应（甲基化，乙基化，异丙基化和叔丁基化）。虽然单烷基化从双伯和双仲结构产生仲/伯和叔/仲酮，但是二烷基化允许合成双仲和双叔酮。但是，不可能以相同的结构引入两个第三级。
• New methodology for the synthesis of tetrahydrofuro[3,2-b]furan-2(3H)-one derivatives, synthons of natural products with biological interest
  作者：Ángel M. Montaña、Joan A. Barcia、Pedro M. Grima、Gabriele Kociok-Köhn

  DOI：10.1016/j.tet.2016.09.004

  日期：2016.10

  the desired furofuranones with high regio- and stereoselectivity. The new synthetic method is simple, straightforward and versatile, because a wide variety of furofuranones, and with wide molecular diversity, may be prepared by adequately designing the substituents of starting materials. The resulting furofuranones may be potentially derivatized to generate chemical libraries of high molecular diversity

  提出了一种以区域和立体选择性方式合成四氢呋喃[3,2-b]呋喃-2（3 H）-一种存在于植物，真菌，藻类，昆虫和其他生物中的多种天然产物中的结构亚基。这种次生代谢产物具有重要的生物学特性，并且在不同的治疗领域显示出非常高的活性。该方法包括由相应的二卤代酮原位生成的高度取代的2-氧基烯丙基阳离子与2-官能化的呋喃（在我们的情况下为2-NHBoc-呋喃）反应。这是一锅反应，可提供所需的呋喃并呋喃酮，具有较高的区域选择性和立体选择性。这种新的合成方法简单，直接和通用，因为可以通过适当设计原料的取代基来制备各种各样的呋喃呋喃酮并具有广泛的分子多样性。
• An unexpected formation of a new 3-imidazoline free radical
  作者：E.A.V. Rijk、G.I. Tesser

  DOI：10.1016/s0040-4020(01)89778-7

  日期：1990.1

  A new 3-imidazoline has been formed unexpectedly in the reaction between 2,4-dibromo- 2,4-dimethylpentanone-3 and concentrated aqueous ammonia. A crystalline nitroxide formed upon oxidation with hydrogen peroxide. Its identity has been proved by X-ray analysis. A feasible mechanism for the present reaction is given.

  在2，4-二溴-2，4-二甲基戊酮-3与浓氨水之间的反应中意外地形成了新的3-咪唑啉。用过氧化氢氧化后形成的结晶氮氧化物。X射线分析证明了其身份。给出了本反应的可行机理。