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Cas Database

91354-09-5

91354-09-5

Identification

  • Product Name:NA

  • CAS Number: 91354-09-5

  • EINECS:

  • Molecular Weight:267.553

  • Molecular Formula: C12H8BrCl

  • HS Code:

  • Mol File:91354-09-5.mol

Synonyms:

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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 5 Articles be found

Visible-Light-Promoted, Catalyst-Free Gomberg-Bachmann Reaction: Synthesis of Biaryls

Lee, Juyoung,Hong, Boseok,Lee, Anna

, p. 9297 - 9306 (2019/08/12)

Biaryls were synthesized via a novel visible-light-promoted Gomberg-Bachmann reaction that does not require a photosensitizer or any metal reagents. The formation of an electron donor-acceptor complex between aryl diazonium salts and pyridine allows, under visible-light irradiation, the synthesis of biaryls in moderate-to-high yields.

Mild and selective deprotection method of acetylated steroids and diterpenes by dibutyltin oxide

Wang, Shao-Min,Zhang, Yan-Bing,Liu, Hong-Min,Yu, Guo-Bin,Wang, Ke-Rang

, p. 26 - 30 (2007/10/03)

Dibutyltin oxide (DBTO) was first utilized for the deacetylation of steroid and diterpene esters. The results showed the deprotection of acetylated steroids and diterpenes separately with moderate catalysis dibutyltin oxide in methanol selectively removed part acetyl groups of these substrates, whereas several functional groups of the steroids and diterpenes were retained and neither isomerization nor degradation of these substrates was observed. It seems that the acetyl groups with lower steric hindrance or near carbonyl, alkoxy, or hydroxyl groups can be cleaved by the reaction, whereas the acetyl groups with higher steric hindrance or without carbonyl, alkoxy, or hydroxyl groups neighboring were retained under the same conditions. One of the interesting results obtained was the selective hydrolysis of the 3β-O-acetyl group in the presence of the 6β group in 3β,6β-Di-O-acetyl-5α-hydroxypregn-16-en-20-one. This allows for subsequent introduction of one unit at C-3 and the other unit at C-6. This procedure is useful for the synthesis of a series of closely related isomers of 3β,5α,6β-trihydroxypregn-16-en-20-one and other widespread polyhydroxysteroids in marine organisms and some terrestrial species.

Aryl radicals from hexazadienes and tetrazenes

Mackay, Donald,McIntyre, Deane Douglas

, p. 990 - 999 (2007/10/02)

Aryl radicals are produced from both ends of the hexazadienes 1 and 2 and from the tetrazene 3, either thermally or photolytically.They attack aromatic compounds in the nucleus, the yield of biaryl being in the range 40-70percent, though it can be made nearly quantitative by using m-dinitrobenzene as additive.The aryl radicals also oxidize 2-propanol to acetone, the reaction products being the halogenobenzene and 1,2-diacetylhydrazine.Photolysis of 1 goes mainly by way of the tetrazene 3, and this may also be a significant pathway in the thermal reaction.Azodiacetylis an intermediate in the thermal reaction of 1 with 2-propanol and may be generally so in all its reactions.Radical induced decomposition is believed to be important in the reactions of 1, 2, and 3, and it is probably responsible for the formation of 1-acetyl-1-arylhydrazines, routinely produced in yields up to 25percent.

Process route upstream and downstream products

Process route

3-iodochlorobenzene
625-99-0

3-iodochlorobenzene

1,4-bromoiodobenzene
589-87-7

1,4-bromoiodobenzene

4-bromo-3'-chloro-1,1'-biphenyl
91354-09-5

4-bromo-3'-chloro-1,1'-biphenyl

Conditions
Conditions Yield
3-iodochlorobenzene; With TurboGrignard; In tetrahydrofuran; at -20 ℃; for 0.333333h;
1,4-bromoiodobenzene; bis(dibenzylideneacetone)-palladium(0); In tetrahydrofuran; toluene; at -30 ℃; for 12h; Further stages.;
73%
1,4-bromoiodobenzene
589-87-7

1,4-bromoiodobenzene

3-chlorophenylboronic acid
63503-60-6

3-chlorophenylboronic acid

4-bromo-3'-chloro-1,1'-biphenyl
91354-09-5

4-bromo-3'-chloro-1,1'-biphenyl

Conditions
Conditions Yield
With palladium diacetate; potassium carbonate; triphenylphosphine; In ethanol; water; toluene; at 80 ℃; for 20h;
40%
bromobenzene
108-86-1,52753-63-6

bromobenzene

3-chlorobenzenediazonium tetrafluoroborate
456-39-3

3-chlorobenzenediazonium tetrafluoroborate

3-bromo-3′-chloro-1,1′-biphenyl
844856-42-4

3-bromo-3′-chloro-1,1′-biphenyl

4-bromo-3'-chloro-1,1'-biphenyl
91354-09-5

4-bromo-3'-chloro-1,1'-biphenyl

2-bromo-3’-chloro-1,1’-biphenyl

2-bromo-3’-chloro-1,1’-biphenyl

Conditions
Conditions Yield
With pyridine; at 23 ℃; for 18h; Overall yield = 90 percent; Overall yield = 144 mg; Inert atmosphere; Irradiation;
4'-bromo-[1,1'-biphenyl]-3-amine
40641-71-2

4'-bromo-[1,1'-biphenyl]-3-amine

4-bromo-3'-chloro-1,1'-biphenyl
91354-09-5

4-bromo-3'-chloro-1,1'-biphenyl

Conditions
Conditions Yield
Multistep reaction; (i) (diazotization), (ii) CuCl, H2O;
1,6-di-p-bromophenyl-3,4-diacetyl-1,5-hexazadiene
79991-24-5

1,6-di-p-bromophenyl-3,4-diacetyl-1,5-hexazadiene

chlorobenzene
108-90-7

chlorobenzene

4-bromo-3'-chloro-1,1'-biphenyl
91354-09-5

4-bromo-3'-chloro-1,1'-biphenyl

4'-chloro-4-bromo-biphenyl
23055-77-8

4'-chloro-4-bromo-biphenyl

4'-bromo-2-chloro-biphenyl
39802-88-5

4'-bromo-2-chloro-biphenyl

Conditions
Conditions Yield
Product distribution; Mechanism; thermolysis;
ponicidin
52617-37-5

ponicidin

acetic anhydride
108-24-7

acetic anhydride

ponicidin 1,6,7-triacetate

ponicidin 1,6,7-triacetate

Conditions
Conditions Yield
With pyridine; dmap; at 20 ℃; for 0.5h;
30%
ponicidin
52617-37-5

ponicidin

ponicidin 1,6-diacetate

ponicidin 1,6-diacetate

Conditions
Conditions Yield
Multi-step reaction with 2 steps
1: 30 percent / DMAP; pyridine / 0.5 h / 20 °C
2: 85 percent / dibutyltin oxide / methanol / 18 h / Heating
With pyridine; dmap; di(n-butyl)tin oxide; In methanol;
4-bromo-3'-chloro-1,1'-biphenyl
91354-09-5

4-bromo-3'-chloro-1,1'-biphenyl

diphenylamine
122-39-4

diphenylamine

C<sub>24</sub>H<sub>18</sub>ClN

C24H18ClN

Conditions
Conditions Yield
With tris-(dibenzylideneacetone)dipalladium(0); tri-tert-butyl phosphine; sodium t-butanolate; In toluene; at 80 ℃; for 12h;
81%
4-bromo-3'-chloro-1,1'-biphenyl
91354-09-5

4-bromo-3'-chloro-1,1'-biphenyl

C<sub>22</sub>H<sub>16</sub>BNO<sub>2</sub>

C22H16BNO2

C<sub>34</sub>H<sub>22</sub>ClN

C34H22ClN

Conditions
Conditions Yield
With tetrakis(triphenylphosphine) palladium(0); potassium carbonate; In tetrahydrofuran; water; for 11h; Inert atmosphere; Reflux;
79%
N-([1,1′-biphenyl]-4-yl)-{1,1′:3′,1″-terphenyl}-5′-amine
587834-96-6

N-([1,1′-biphenyl]-4-yl)-{1,1′:3′,1″-terphenyl}-5′-amine

4-bromo-3'-chloro-1,1'-biphenyl
91354-09-5

4-bromo-3'-chloro-1,1'-biphenyl

C<sub>42</sub>H<sub>30</sub>ClN

C42H30ClN

Conditions
Conditions Yield
With bis(tri-t-butylphosphine)palladium(0); sodium t-butanolate; In toluene; for 3h; Inert atmosphere; Reflux;
64%

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