Welcome to LookChem.com Sign In|Join Free

CAS

  • or

1235989-03-3

Post Buying Request

1235989-03-3 Suppliers

Recommended suppliersmore

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

1235989-03-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1235989-03-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,5,9,8 and 9 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1235989-03:
(9*1)+(8*2)+(7*3)+(6*5)+(5*9)+(4*8)+(3*9)+(2*0)+(1*3)=183
183 % 10 = 3
So 1235989-03-3 is a valid CAS Registry Number.

1235989-03-3Downstream Products

1235989-03-3Relevant articles and documents

Recoverable polystyrene-supported palladium catalyst for construction of all-carbon quaternary stereocenters via asymmetric 1,4-addition of arylboronic acids to cyclic enones

Bartá?ek, Jan,Váňa, Ji?í,Drabina, Pavel,Svoboda, Jan,Kocúrik, Martin,Sedlák, Milo?

, (2020/05/16)

The development of recoverable catalysts based on the combination of synthetically demanding ligands with transition metals attracts a lot of attention, especially from the environmental point of view. In this paper, we describe the preparation of a recoverable polystyrene supported chiral palladium catalyst based on PyOx ligand suitable for asymmetric 1,4-addition of arylboronic acids to cyclic 3-substituted five- and six-membered enones. In the reaction, all?carbon quaternary stereocenters are formed with a high level of enantioselectivity (up to 91% ee) and conversion (up to 99%). The catalyst was used in 6 cycles with no loss of enantioselectivity and only a small decrease in conversion. A solution of the problems associated with the transition from homogeneous to heterogeneous catalytic systems is discussed.

Synthesis of diverse β-quaternary ketones via palladium-catalyzed asymmetric conjugate addition of arylboronic acids to cyclic enones

Holder, Jeffrey C.,Goodman, Emmett D.,Kikushima, Kotaro,Gatti, Michele,Marziale, Alexander N.,Stoltz, Brian M.

, p. 5781 - 5792 (2015/08/03)

Abstract The development and optimization of a palladium-catalyzed asymmetric conjugate addition of arylboronic acids to cyclic enone conjugate acceptors is described. These reactions employ air-stable and readily-available reagents in an operationally si

Palladium-catalyzed asymmetric conjugate addition of arylboronic acids to five-, six-, and seven-membered β-substituted cyclic enones: enantioselective construction of all-carbon quaternary stereocenters

Kikushima, Kotaro,Holder, Jeffrey C.,Gatti, Michele,Stoltz, Brian M.

supporting information; experimental part, p. 6902 - 6905 (2011/06/19)

The first enantioselective Pd-catalyzed construction of all-carbon quaternary stereocenters via 1,4-addition of arylboronic acids to β-substituted cyclic enones is reported. Reaction of a wide range of arylboronic acids and cyclic enones using a catalyst

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 1235989-03-3