Welcome to LookChem.com Sign In|Join Free

CAS

  • or

139604-90-3

Post Buying Request

139604-90-3 Suppliers

Recommended suppliersmore

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

139604-90-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139604-90-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,6,0 and 4 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 139604-90:
(8*1)+(7*3)+(6*9)+(5*6)+(4*0)+(3*4)+(2*9)+(1*0)=143
143 % 10 = 3
So 139604-90-3 is a valid CAS Registry Number.

139604-90-3Downstream Products

139604-90-3Relevant articles and documents

CHEMISTRY OF POLYFLUOROCARBONS. 1. NUCLEOPHILIC IODOFLUORINATION OF PERFLUOROALKYL VINYL ETHERS

Nazarenko, T. I.,Deev, L. E.,Ponomarev, V. G.,Novosel'tseva, N. I.,Pospelova, N. B.,Pashkevich, K. I.

, p. 586 - 588 (2007/10/02)

Nucleophilic iodofluorination of perfluorovinyl methyl (I) and perfluorovinyl propyl (II) ethers by iodine chloride in nitrobenzene or sulfolan afforded 1-iodoperfluoro-1-methoxyethane (III) and 1-iodoperfluoro-1-propoxyethane in yields of 65 and 77percent, respectively.In addition to compound (III), the reaction of perfluorovinyl methyl ether afforded two side products: 1-iodo-2-chloroperfluoro-1-methoxyethane and 2-iodo-1-chloroperfluoro-1-methoxyethane.The latter products are formed via a radical reaction, which takes place under drastic conditions.On the basis of quantum chemical calculations of (I), (II), and the two anions formed from (I),CF3OC-FCF3 (VI) and CF3OCF2C-F2 (VII), it is proposedd that nucleophilic iodofluorination of perfluoroalkyl vinyl ethers involves the formation of thermodinamically more stable anions.The higher reactivity of (I) compared with (II) is in accord with the energy of the lowest unoccupied molecular orbitals and the charge density on the CF2 carbon atoms. 19F NMR spectra of the synthesized products are shown.

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

What can I do for you?
Get Best Price

Get Best Price for 139604-90-3