Welcome to LookChem.com Sign In|Join Free

CAS

  • or

1378383-75-5

Post Buying Request

1378383-75-5 Suppliers

Recommended suppliersmore

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

1378383-75-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1378383-75-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,7,8,3,8 and 3 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1378383-75:
(9*1)+(8*3)+(7*7)+(6*8)+(5*3)+(4*8)+(3*3)+(2*7)+(1*5)=205
205 % 10 = 5
So 1378383-75-5 is a valid CAS Registry Number.

1378383-75-5Relevant articles and documents

Remote stereocontrol by the sulfinyl group. Diels-Alder reaction of cyclopentadiene with substituted (S)-[2-(p-tolylsulfinyl)styrenes and (S)-[2-(p-tolylsulfinyl)phenyl] vinyl ketones

Maestro, M. Carmen,Fernández-Salas, José Antonio,García Ruano, José L.,Ramírez-Rodríguez, Oney O.,Araya-Maturana, Ramiro

experimental part, p. 4129 - 4137 (2012/07/30)

The ability of a homochiral sulfinyl group at the dienophile to act as a remote stereocontrol inductor in the Diels-Alder reaction with cyclopentadiene has been evaluated. High pressure conditions were required for the reactions of (S)-2-(p-tolylsulfinyl)styrenes 3-5 (E-1,2-disubstituted double bond) and 6-8 (1,1-disubstituted double bond). A good facial selectivity and total endo selectivity were attained with 1,1-disubstitued dienophiles, though the 1,2-disubstituted ones afforded poorer results. In contrast, (S)-[2-(p-tolylsulfinyl)phenyl] vinyl ketones 9-11 reacted readily at low temperature (-40 °C) with complete endo selectivity and high facial selectivity in the presence of Yb(OTf)3 as a chelating reagent of sulfinyl and carbonyl oxygen atoms. Concerning furan reactions, β-trifluoromethyl enone 14 afforded Diels-Alder adducts with high facial selectivity in the presence of the Lewis acid, but β-non-substituted enones 9 and 12 yielded products of furan conjugate addition to the double bond.

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 1378383-75-5