Welcome to LookChem.com Sign In|Join Free

CAS

  • or

55757-14-7

Post Buying Request

55757-14-7 Suppliers

Recommended suppliersmore

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

55757-14-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 55757-14-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,7,5 and 7 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 55757-14:
(7*5)+(6*5)+(5*7)+(4*5)+(3*7)+(2*1)+(1*4)=147
147 % 10 = 7
So 55757-14-7 is a valid CAS Registry Number.

55757-14-7Relevant articles and documents

Total synthesis of lithospermic acid using Fe-catalyzed Cross-Dehydrogenative-Coupling reaction and Pd-catalyzed ester-directed C–H olefination

Zheng, Yong,Song, Weibin,Zhu, Yefu,Wei, Bole,Xuan, Lijiang

, p. 5950 - 5954 (2018/09/06)

The total synthesis of lithospermic acid has been accomplished employing two C–H activation reactions as key steps. Fe-catalyzed Cross-Dehydrogenative-Coupling reaction was used for the rapid construction of benzofuran framework. Pd-catalyzed ester-direct

A concise route to dihydrobenzo[b]furans: Formal total synthesis of (+)-lithospermic acid

Fischer, Joshua,Savage, G. Paul,Coster, Mark J.

, p. 3376 - 3379 (2011/09/12)

A sequence of Sonogashira coupling, Pd(II)-catalyzed carbonylative annulation, and benzofuran reduction (Mg, MeOH, NH4Cl) provides a convergent and modular synthetic route to trans-2-aryl-2,3-dihydrobenzo[b]furan- 3-carboxylates, which are a structural feature of numerous biologically active natural products. This versatile strategy was applied to the formal total synthesis of the anti-HIV natural product (+)-lithospermic acid.

Total synthesis of (+)-lithospermic acid by asymmetric intramolecular alkylation via catalytic C-H bond activation

O'Malley, Steven J.,Tan, Kian L.,Watzke, Anja,Bergman, Robert G.,Ellman, Jonathan A.

, p. 13496 - 13497 (2007/10/03)

The total synthesis of (+)-lithospermic acid is described. The efficient synthesis features an asymmetric alkylation via C-H bond activation to assemble the dihydrobenzofuran core of the natural product. This was accomplished via a chiral imine-directed C

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 55757-14-7