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Cas Database

1809-26-3

1809-26-3

Identification

  • Product Name:2-Pentene, 4-bromo-

  • CAS Number: 1809-26-3

  • EINECS:

  • Molecular Weight:149.03

  • Molecular Formula: C5H9Br

  • HS Code:2903399090

  • Mol File:1809-26-3.mol

Synonyms:4-Brom-pent-2-en;4-Benzyloxy-2-butanol;2-bromopent-3-ene;1-benzyloxy-3-butanol;4-bromo-pent-2-ene;1-benzyloxybutan-3-ol;3-benzyloxy-1-butanol;

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Safety information and MSDS view more

  • Signal Word:no data available

  • Hazard Statement:no data available

  • First-aid measures: General adviceConsult 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 Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician. If swallowed Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.

  • Fire-fighting measures: Suitable extinguishing media Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide. Wear self-contained breathing apparatus for firefighting if necessary.

  • Accidental release measures: Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. For personal protection see section 8. Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided. Pick up and arrange disposal. Sweep up and shovel. Keep in suitable, closed containers for disposal.

  • Handling and storage: Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Avoid exposure - obtain special instructions before use.Provide appropriate exhaust ventilation at places where dust is formed. For precautions see section 2.2. Store in cool place. Keep container tightly closed in a dry and well-ventilated place.

  • Exposure controls/personal protection:Occupational Exposure limit valuesBiological limit values Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday. Eye/face protection Safety glasses with side-shields conforming to EN166. Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU). Skin protection Wear impervious clothing. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. 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. Respiratory protection Wear dust mask when handling large quantities. Thermal hazards

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Relevant articles and documentsAll total 4 Articles be found

A facile access to pyrroles from amino acids via an aza-Wacker cyclization

Zhang, Zuhui,Zhang, Jintang,Tan, Jiajing,Wang, Zhiyong

, p. 5180 - 5182 (2008/12/20)

(Chemical Equation Presented) A facile and efficient synthesis of pyrroles from readily available amino acids is described. The key step in the method is an aza-Wacker oxidative cyclization catalyzed by palladium(II)/Cu(OTf) 2. A series of pyrroles were obtained by this method under mild conditions.

The [2,3] sigmatropic rearrangement of N-benzyl-O-allylhydroxylamines

Davies, Stephen G.,Fox, John F.,Jones, Simon,Price, Anne J.,Sanz, Miguel A.,Sellers, Thomas G. R.,Smith, Andrew D.,Teixeira, Fatima C.

, p. 1757 - 1765 (2007/10/03)

The rearrangement of a range of N-benzyl-O-allylhydroxylamines to the corresponding N-allylhydroxylamines upon treatment with n-BuLi in THF, followed by reduction to the corresponding N-allylamines, is described. Mechanistic studies of the transformation are consistent with an intramolecular [2,3] sigmatropic rearrangement.

Synthesis and field bioassay of the Israeli pine bast scale, Matsucoccus josephi, female sex pheromone

Zegelman, Lev,Hassner, Alfred,Mendel, Zvi,Dunkelblum, Ezra

, p. 5641 - 5644 (2007/10/02)

We report the first synthesis of the two components of the female sex pheromone of Matsucoccus josephi (2E,4E,8E)-4,6-dimethyl-2,4,8-decatrien-7-one (1) and (2E,4Z,8E)-4,6-dimethyl-2,4,8-decatrien-7-one (2) utilizing the Reformatzky and Wittig reactions as key steps. A mixture of 1 and 2 and the separate isomers were bioassayed in a pine forest indicating that E isomer 1 is much more active than 2 and is also a kairomone for a predator.

Acyclic Stereocontrol through the Thio-Claisen Rearrangement of Precursors bearing a Chiral Centre adjacent to Carbon 1

Desert, Stephane,Metzner, Patrick,Ramdani, Mohamed

, p. 10315 - 10326 (2007/10/02)

The Claisen rearrangement of precursors bearing a stereogenic centre adjacent to carbon 1 of the pericyclic nucleus has been investigated in the sulfur series.Dithioesters having a methyl and various alkyl or alkenyls groups on the β-carbon were deprotonated by LDA.The resulting enethiolates were allylated on sulfur to give S-allyl ketenedithioacetals.The thio-Claisen transposition of the latter compounds was achieved either at room temperature or at 101 deg C to afford good yield of allylated dithioesters.Diastereomeric selectivities up to 95:5 have been observed.These results have been explained by a steric effect and correlated to allylic strain values.

Process route upstream and downstream products

Process route

Conditions
Conditions Yield
With water; hydrogen bromide; at 130 - 133 ℃;
Conditions
Conditions Yield
With phosphorus tribromide;
77%
With phosphorus tribromide; In diethyl ether; at 10 ℃; for 3h;
61%
With phosphorus tribromide; In neat (no solvent);
3-penten-2-ol
1569-50-2

3-penten-2-ol

2-bromopent-3-ene
1809-26-3

2-bromopent-3-ene

Conditions
Conditions Yield
With hydrogen bromide;
With phosphorus tribromide;
Multi-step reaction with 2 steps
1: hydrogen chloride
2: hydrogen bromide
With hydrogenchloride; hydrogen bromide;
With hydrogen bromide;
3-penten-2-ol
1569-50-2

3-penten-2-ol

2-bromopent-3-ene
1809-26-3

2-bromopent-3-ene

Conditions
Conditions Yield
With phosphorus tribromide; In diethyl ether; at 0 ℃; for 24h;
methyl magnesium iodide
917-64-6

methyl magnesium iodide

trans-Crotonaldehyde
123-73-9,4170-30-3

trans-Crotonaldehyde

2-bromopent-3-ene
1809-26-3

2-bromopent-3-ene

Conditions
Conditions Yield
Multistep reaction; (i) , (ii) PBr3, Et2O;
penta-2,3-diene
591-96-8

penta-2,3-diene

E/Z-3-Brom-2-penten
21964-23-8

E/Z-3-Brom-2-penten

2-bromopent-3-ene
1809-26-3

2-bromopent-3-ene

Conditions
Conditions Yield
With hydrogen bromide; at 20 ℃; for 3h;
2-bromopent-3-ene
1809-26-3

2-bromopent-3-ene

Conditions
Conditions Yield
With hydrogen bromide;
4-chloropent-2-ene
1458-99-7

4-chloropent-2-ene

2-bromopent-3-ene
1809-26-3

2-bromopent-3-ene

Conditions
Conditions Yield
With hydrogen bromide;
4-chloropent-2-ene
1458-99-7

4-chloropent-2-ene

hydrogen bromide
10035-10-6,12258-64-9

hydrogen bromide

2-bromopent-3-ene
1809-26-3

2-bromopent-3-ene

Conditions
Conditions Yield
inactive 4-chloro-pentene-(2);
2-bromopent-3-ene
1809-26-3

2-bromopent-3-ene

Conditions
Conditions Yield
With 3-penten-2-ol; hydrogen bromide;
aus dem entspr.Allen (CH3-CH=C=CH-CH3) + HBr (Stereoisomere Z/E + Vinylbromidprod.);
2-Penten-4-ol, PBr3;

Global suppliers and manufacturers

Global( 2) Suppliers
  • Company Name
  • Business Type
  • Contact Tel
  • Emails
  • Main Products
  • Country
  • SAGECHEM LIMITED
  • Business Type:Lab/Research institutions
  • Contact Tel:+86-571-86818502
  • Emails:will@sagechem.com
  • Main Products:28
  • Country:China (Mainland)
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