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83-53-4

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83-53-4 Usage

Chemical Properties

light orange-beige fine crystalline powder

Uses

1,4-Dibromonaphthalene is used in the annelation of PAHs. Also used in the synthesis of novel, orally active dual NK1/NK2 antagonists.

Application

1,4-Dibromonaphthalene is mainly used for pharmaceutical intermediates. synthesis of tribromo methoxynaphthalenes from 1,4-dibromonaphthalene. starting material 1,4-dibromonaphthalene was prepared starting from naphthalene or 1-bromonaphthalene.5,8-Dibromo-1,4-naphthoquinone and 5,8-diiodo-1,4-naphthoquinone were prepared from 1,4-dibromonaphthalene and 1,4-diiodonaphthalene.

Preparation

An environment-friendly method was developed to synthesize 1,4-dibromonaphthalene (1,4-DBN) using 1,3-dialkylimidazolium and pyridinium ionic liquids as catalysts, over which the yields of 1,4-DBN were obtained as high as 100%.An environment-friendly method for synthesis of 1,4-dibromo-naphthalene in aqueous solution of ionic liquids

Check Digit Verification of cas no

The CAS Registry Mumber 83-53-4 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 8 and 3 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 83-53:
(4*8)+(3*3)+(2*5)+(1*3)=54
54 % 10 = 4
So 83-53-4 is a valid CAS Registry Number.
InChI:InChI=1/C10H6Br2/c11-9-5-6-10(12)8-4-2-1-3-7(8)9/h1-6H

83-53-4 Well-known Company Product Price

  • Brand
  • (Code)Product description
  • CAS number
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  • Detail
  • TCI America

  • (D2359)  1,4-Dibromonaphthalene  >98.0%(GC)

  • 83-53-4

  • 5g

  • 790.00CNY

  • Detail
  • TCI America

  • (D2359)  1,4-Dibromonaphthalene  >98.0%(GC)

  • 83-53-4

  • 25g

  • 2,450.00CNY

  • Detail
  • Alfa Aesar

  • (A18171)  1,4-Dibromonaphthalene, 98%   

  • 83-53-4

  • 5g

  • 1081.0CNY

  • Detail
  • Alfa Aesar

  • (A18171)  1,4-Dibromonaphthalene, 98%   

  • 83-53-4

  • 25g

  • 2547.0CNY

  • Detail
  • Alfa Aesar

  • (A18171)  1,4-Dibromonaphthalene, 98%   

  • 83-53-4

  • 100g

  • 4479.0CNY

  • Detail

83-53-4SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name 1,4-Dibromonaphthalene

1.2 Other means of identification

Product number -
Other names Naphthalene, 1,4-dibromo-

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:83-53-4 SDS

83-53-4Relevant articles and documents

-

Bayer,O'Reilly

, p. 311 (1958)

-

Triptycenyl Sulfide: A Practical and Active Catalyst for Electrophilic Aromatic Halogenation Using N-Halosuccinimides

Nishii, Yuji,Ikeda, Mitsuhiro,Hayashi, Yoshihiro,Kawauchi, Susumu,Miura, Masahiro

supporting information, p. 1621 - 1629 (2020/02/04)

A Lewis base catalyst Trip-SMe (Trip = triptycenyl) for electrophilic aromatic halogenation using N-halosuccinimides (NXS) is introduced. In the presence of an appropriate activator (as a noncoordinating-anion source), a series of unactivated aromatic compounds were halogenated at ambient temperature using NXS. This catalytic system was applicable to transformations that are currently unachievable except for the use of Br2 or Cl2: e.g., multihalogenation of naphthalene, regioselective bromination of BINOL, etc. Controlled experiments revealed that the triptycenyl substituent exerts a crucial role for the catalytic activity, and kinetic experiments implied the occurrence of a sulfonium salt [Trip-S(Me)Br][SbF6] as an active species. Compared to simple dialkyl sulfides, Trip-SMe exhibited a significant charge-separated ion pair character within the halonium complex whose structural information was obtained by the single-crystal X-ray analysis. A preliminary computational study disclosed that the πsystem of the triptycenyl functionality is a key motif to consolidate the enhancement of electrophilicity.

Composite taken as URAT 1 inhibitor

-

Paragraph 0019, (2018/05/16)

The invention provides a series of composite with a formula (I), wherein n is selected from 1, 2 or 3, X is selected from O or S, Q is selected from C or N, and R is selected from H, halogen or -C1-6.The composite can be used as the URAT 1 inhibitor and can be used for treating hyperuricemia and gout.

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