Welcome to LookChem.com Sign In|Join Free

CAS

  • or

4889-77-4

Post Buying Request

4889-77-4 Suppliers

Recommended suppliersmore

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

4889-77-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4889-77-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,8,8 and 9 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 4889-77:
(6*4)+(5*8)+(4*8)+(3*9)+(2*7)+(1*7)=144
144 % 10 = 4
So 4889-77-4 is a valid CAS Registry Number.

4889-77-4Relevant articles and documents

Application of Organolithium and Related Reagents in Synthesis XVI: Synthetic Strategies Based on Aromatic Metallation. A Concise Regiospecific Conversion of Chlorobenzoic Acids into their Benzylated Derivatives

Epsztajn, J.,Bieniek, A.,Kowalska, J. A.

, p. 701 - 716 (2007/10/03)

The reaction of benzyl bromide with bis-(N- and C-ortho)-lithiated chloroanilides 4, 5, and 6 has been examined.It has been found that in the case where the lithiated compound was derived from meta-methoxyanilides, pre-addition of LiBr or TMEDA was required to achieve C-benzylation.These results were accounted for by the conversion of the usually formed dimer into a mixed dimer with the LiBr or TMEDA complex in which the C-lithium bond appears to be more accessible towards electrophiles.The practical synthesis of o-benzylchlorobenzoic acids 10, 11, and 12 was accomplished via ionic reductive cleavage (Et3SiH/TiCl4) of the corresponding phthalides 18, 19, and 20.The acids 10, 11b, and 11c afforded the corresponding anthrones, upon treatment with trifluoroacetic anhydride which were oxidized by chromium trioxide to the new chloroantraquinones 21, 22, and 23. - Keywords: Chlorophthalides; Reduction; Benzylation; Benzylbenzoic acids; Chloroantraquinones

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 4889-77-4