Welcome to LookChem.com Sign In|Join Free

CAS

  • or

21615-74-7

Post Buying Request

21615-74-7 Suppliers

Recommended suppliersmore

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

21615-74-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21615-74-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,6,1 and 5 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 21615-74:
(7*2)+(6*1)+(5*6)+(4*1)+(3*5)+(2*7)+(1*4)=87
87 % 10 = 7
So 21615-74-7 is a valid CAS Registry Number.

21615-74-7Relevant articles and documents

Application of a new solid-phase resin: Benzamide ortho-lithiation and the synthesis of a phthalide library

Garibay, Patrick,Toy, Patrick H.,Hoeg-Jensen, Thomas,Janda, Kim. D.

, p. 1438 - 1440 (1999)

The utility of new polytetrahydrofuran cross-linked polystyrene resins is demonstrated through the solid-phase synthesis of a phthalide library. The phthalides are synthesized via directed ortho-lithiation of resin bound benzamides and isolated via cyclat

-

Ferrari et al.

, p. 1247,1251 (1965)

-

-

Chatterjea et al.

, p. 3409 (1972)

-

Direct and selective synthesis of 3-arylphthalides via nickel-catalyzed aryl addition/intramolecular esterification

Qiang, Qing,Liu, Feipeng,Rong, Zi-Qiang

supporting information, (2021/05/10)

Herein we report a nickel-catalyzed aryl addition/intramolecular esterification in a cascade fashion. Under the combination of commercially available nickel precursor and tridentate ligand, the one pot protocol offers a direct, simple and regioselective approach to access 3-aryl phthalide derivatives from two readily available substrates with good efficiency, broad scope as well as satisfactory functional group compatibility.

Transition-Metal-Free Synthesis of Polyfunctional Triarylmethanes and 1,1-Diarylalkanes by Sequential Cross-Coupling of Benzal Diacetates with Organozinc Reagents

Wei, Baosheng,Ren, Qianyi,Bein, Thomas,Knochel, Paul

supporting information, p. 10409 - 10414 (2021/03/26)

A variety of functionalized triarylmethane and 1,1-diarylalkane derivatives were prepared via a transition-metal-free, one-pot and two-step procedure, involving the reaction of various benzal diacetates with organozinc reagents. A sequential cross-coupling is enabled by changing the solvent from THF to toluene, and a two-step SN1-type mechanism was proposed and evidenced by experimental studies. The synthetic utility of the method is further demonstrated by the synthesis of several biologically relevant molecules, such as an anti-tuberculosis agent, an anti-breast cancer agent, a precursor of a sphingosine-1-phosphate (S1P) receptor modulator, and a FLAP inhibitor.

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 21615-74-7