Welcome to LookChem.com Sign In|Join Free

CAS

  • or

263143-80-2

Post Buying Request

263143-80-2 Suppliers

Recommended suppliersmore

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

263143-80-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 263143-80-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,3,1,4 and 3 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 263143-80:
(8*2)+(7*6)+(6*3)+(5*1)+(4*4)+(3*3)+(2*8)+(1*0)=122
122 % 10 = 2
So 263143-80-2 is a valid CAS Registry Number.

263143-80-2Downstream Products

263143-80-2Relevant articles and documents

Synthesis of chiral amino alcohols embodying the bispidine framework and their application as ligands in enantioselectively catalyzed additions to C=O and C=C groups

Spieler, Jan,Huttenloch, Oliver,Waldmann, Herbert

, p. 391 - 399 (2000)

Two generally applicable routes for the synthesis of chiral amino alcohols embodying the bispidine framework have been developed. In linear route A the bispidine framework is built up successively from chiral primary amines via intermediate formation of a piperidinone and a bispidinone. In convergent route B an achiral bispidine is formed first and then the N- substituents are introduced by reaction of the nitrogen bases with chiral electrophiles. In order to determine if the bispidine core and its N- substituents can influence the steric course of enantioselective transformations, bispidine amino alcohols built up by these two routes were investigated as chiral ligands in the enantioselectively catalyzed addition of diethylzinc to aldehydes and chalcone. In general, tridentate ligands containing one chiral amino alcohol fragment and a second amino substituent without a stereogenic center were more efficient than tetradentate ligands with two amino alcohol structural units. With the best ligands the enantioselective addition of diethylzinc to aromatic and aliphatic aldehydes proceeded with 83-98% ee and the nickel-catalyzed addition of diethylzinc to chalcone was achieved with up to 85% ee.

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 263143-80-2