Welcome to LookChem.com Sign In|Join Free

CAS

  • or

182805-86-3

Post Buying Request

182805-86-3 Suppliers

Recommended suppliersmore

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

182805-86-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 182805-86-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,2,8,0 and 5 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 182805-86:
(8*1)+(7*8)+(6*2)+(5*8)+(4*0)+(3*5)+(2*8)+(1*6)=153
153 % 10 = 3
So 182805-86-3 is a valid CAS Registry Number.

182805-86-3Downstream Products

182805-86-3Relevant articles and documents

TiIV-BINOLate-Catalyzed Highly Enantioselective Additions of β-Substituted Allylstannanes to Aldehydes

Weigand, Stefan,Brueckner, Reinhard

, p. 1077 - 1084 (2007/10/03)

Enantiomerically pure homoallyl alcohols were prepared from aldehydes R1-CH=O (R1 = Ph, pentyl, Ph-CH=CH-, iPr) and β-substituted allylstannanes H2C=CR2-CH2-SnBu3 (R2 = pentyl, tBuPh2SiO-CH2-, tBuPh2SiO-CH2-CH2-, PhS-CH2-CH2).These reactions were catalyzed by the same additives-Ti(OR)4 (10 molpercent) and (R)-BINOL (20 molpercent)- that Keck et al. used in analogous reactions with methallyl- and allyltributylstannane.To attain optimum ee values (96.4-99.2percent in the reaction with hexanal) these additives had to be premixed for 2 h at room temperature.Ti(OEt)4 and Ti(OiPr)4 gave equally good results, while Ti(OMe)4, Ti(OCHEt2)4 and Ti(OtBu)4 were inferior.Our procedure works in the absence of molecular sieves and can be extended to enantioselective addition reactions with allyl- and methallyltributylstannane, too (+ hexanal: 97.4 and 97.0percent ee, respectively). -Keywords: allylstannanes; asymmetric allylations; catalysis; C-C bond formation; homoallylic alcohols

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 182805-86-3