Welcome to LookChem.com Sign In|Join Free

CAS

  • or

40847-09-4

Post Buying Request

40847-09-4 Suppliers

Recommended suppliersmore

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

40847-09-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40847-09-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,8,4 and 7 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 40847-09:
(7*4)+(6*0)+(5*8)+(4*4)+(3*7)+(2*0)+(1*9)=114
114 % 10 = 4
So 40847-09-4 is a valid CAS Registry Number.

40847-09-4Relevant articles and documents

Novel poly(2-oxazoline)s with pendant l-prolinamide moieties as efficient organocatalysts for direct asymmetric aldol reaction

Wang, Yao,Shen, Huifang,Zhou, Le,Hu, Fangyu,Xie, Shoulei,Jiang, Liming

, p. 6739 - 6749 (2016/09/03)

Poly(2-oxazoline)-supported bifunctional organocatalysts have been prepared through a bottom-up protocol, which involves synthesis of well-defined poly(2-oxazoline) precursors bearing amino groups in the side-chains followed by amide coupling with N-Boc-l-proline then deprotection. The resultant l-prolinamido-functionalized polymers have proven to be significantly more active than their monomeric counterparts for the aldolisation of cyclic ketones with several substituted benzaldehydes under neat conditions. By using 15 mol% of the polymer as a catalyst, the direct aldol reaction products were isolated in high yields and with good diastereo- and enantioselectivity. Based on circular dichroism spectrum analysis, the enhancement in catalytic activity is probably related to the conformational changes of the pseudo-peptide scaffold of poly(2-oxazoline)s. In addition, these soluble polymeric catalysts can be recovered and reused by precipitation in ether for five catalytic cycles without significantly diminishing their efficiency.

Chiral primary-tertiary diamine catalysts derived from natural amino acids for syn-aldol reactions of hydroxy ketones

Li, Jiuyuan,Luo, Sanzhong,Cheng, Jin-Pei

supporting information; experimental part, p. 1747 - 1750 (2009/08/07)

-

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 40847-09-4