Welcome to LookChem.com Sign In|Join Free
  • or
Benzene, [(2-bromoethenyl)sulfonyl]-, (E)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

20408-25-7

Post Buying Request

20408-25-7 Suppliers

Recommended suppliers

  • Product
  • FOB Price
  • Min.Order
  • Supply Ability
  • Supplier
  • Contact Supplier

20408-25-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20408-25-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,4,0 and 8 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 20408-25:
(7*2)+(6*0)+(5*4)+(4*0)+(3*8)+(2*2)+(1*5)=67
67 % 10 = 7
So 20408-25-7 is a valid CAS Registry Number.

20408-25-7SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 20, 2017

Revision Date: Aug 20, 2017

1.Identification

1.1 GHS Product identifier

Product name trans-β-Bromovinyl phenyl sulfone

1.2 Other means of identification

Product number -
Other names (E)-(2-Bromovinyl) phenyl sulfone

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:20408-25-7 SDS

20408-25-7Relevant academic research and scientific papers

NUCLEOPHILIC REACTION AT A VINYL CENTER. XXII. SYNTHESIS AND NUCLEOPHILIC VINYLIC SUBSTITUTION IN E-β-FLUOROVINYL ARYL SULFONES

Shainyan, B. A.,Mirskova, A. N.

, p. 61 - 66 (2007/10/02)

The reaction of potassium fluoride with E-β-bromovinyl aryl sulfones in the presence of 18-crown-6-ether leads to a mixture of the sulfones XC6H4SO2CH2CHF2 and E-XC6H4SO2CH=CHF, the ratio of which decreases in the order X=CH3, H, Cl, NO2.The kinetics of n

Reactions of Alkylmercurials with Heteroatom-Centered Acceptor Radicals

Russell, Glen A.,Ngoviwatchai, Preecha,Tashtoush, Hasan I.,Pla-Dalmau, Anna,Khanna, Rajive K.

, p. 3530 - 3538 (2007/10/02)

The relative reactivities of alkylmercury halides toward PhS., PhSe., or I. decrease drastically from R = tert-butyl to R = sec-alkyl to R = n-butyl, indicative that R. is formed in the rate-determining step in the attack of these radicals upon RHgCl.The alkyl radicals thus formed will enter into chain reactions in which a heteroatom-centered radical (A.) is regenerated from substrates such as RS-SR, ArSe-SeAr, ArTe-TeAr, PhSe-SO2Ar, Cl-SO2Ph; ZCH=CHA (A = Cl, I, SPh, SO2Ph); or PhCCHA (A = I, SPh, SO2Ph). β-Styrenyl (PhCH=CHA, Ph2C=CHA) and β-phenethynyl (PhCCA) systems with A = I, Br, SO2Ph also enter into chain reactions with mercury(II) salts with the ligands PhS, PhSe, PhSO2, or (EtO)2PO.The relative reactivities of a series of reagents toward t-Bu. and of PhCH=CHA, Ph2C=CHA, and PhCCA toward c-C6H11. are reported as well as the regioselectivity of t-Bu. attack observed for 1,2-disubstituted ethylenes (ZCH=CHA) with Z and A from the group Ph, Cl, Br, I, SO2Ph, SPh, Bu3Sn.Reactions of (E)- and (Z)-PhCH=CHI or MeO2CCH=CHI with t-Bu. or c-C6H11. occurred in a regioselective and stereospecific (retention) manner.Reactions of (E)- and (Z)-ClCH=CHCl occurred in a nonstereospecific manner in which the E/Z product ratio increased with the bulk of the attacking radical.A similar effect on the E/Z product ratios was observed for (Z)-MeO2CCH=CHCl.

NUCLEOPHILIC REACTIONS AT A VINYL CENTER. XIII. REACTION OF β,β-DIBROMOVINYL PHENYL SULFONE WITH SODIUM IODIDE AND THE REACTIVITY OF β,β-DIIODOVINYL PHENYL SULFONE

Shainyan, B. A.,Mirskova, A. N.

, p. 1989 - 1993 (2007/10/02)

β-Bromo-β-iodovinyl phenyl sulfone and β,β-diiodovinyl phenyl sulfone were obtained by the reaction of β,β-dibromovinyl phenyl sulfone with sodium iodide in acetone.The reactivity of β,β-diiodovinyl phenyl sulfone in reactions with sodium methoxide and thiophenolates was studied.A comparison was made of the relative reactivities of the various β,β-dihalogenovinyl sulfones (Hlg = Cl, Br, I) in nucleophilic vinylic substitution within the scope of the elimination-addition and direct substitution mechanisms.

Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1 Customer Service

What can I do for you?
Get Best Price

Get Best Price for 20408-25-7