Welcome to LookChem.com Sign In|Join Free

CAS

  • or

1430342-25-8

Post Buying Request

1430342-25-8 Suppliers

Recommended suppliersmore

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

1430342-25-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1430342-25-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,3,0,3,4 and 2 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1430342-25:
(9*1)+(8*4)+(7*3)+(6*0)+(5*3)+(4*4)+(3*2)+(2*2)+(1*5)=108
108 % 10 = 8
So 1430342-25-8 is a valid CAS Registry Number.

1430342-25-8Downstream Products

1430342-25-8Relevant articles and documents

Metal-free, one-pot, sequential protocol for transforming ,-epoxy ketones to -hydroxy ketones and -methylene ketones

Hasegawa, Eietsu,Arai, Saki,Tayama, Eiji,Iwamoto, Hajime

, p. 1593 - 1600 (2015/02/19)

A new sequential, one-pot protocol for transforming 1,3-disubstituted 2,3-epoxy ketones to β;-hydroxy ketones and α-methylene ketones has been developed. Reaction of epoxy ketones with boron trifluoride etherate (BF3·OEt2) generates the cationic intermediates by regioselective epoxide ring opening and an acyl shift. Then, a treatment of these cations with 2-aryl-1,3-dimethylbenzimidazolines (DMBIH) results in formation of 1,2-disubstituted 3-hydroxy ketones. DMBIH serves as a hydride donor in the second step of this process. Finally, the β;-hydroxy ketones can be converted to 1,2-disubstituted 2-methylene ketones by treatment with methanesulfonic acid or a combination of methanesulfonyl chloride and triethylamine. Importantly, the sequential steps involved in formation of the α-methylene ketone products can be carried out in one pot.

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 1430342-25-8