Welcome to LookChem.com Sign In|Join Free

CAS

  • or

43020-09-3

Post Buying Request

43020-09-3 Suppliers

Recommended suppliersmore

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

43020-09-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 43020-09-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,3,0,2 and 0 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 43020-09:
(7*4)+(6*3)+(5*0)+(4*2)+(3*0)+(2*0)+(1*9)=63
63 % 10 = 3
So 43020-09-3 is a valid CAS Registry Number.

43020-09-3Relevant articles and documents

Synthesis of 3-Carbonyl Trisubstituted Furans via Pd-Catalyzed Aerobic Cycloisomerization Reaction: Development and Mechanistic Studies

Barboza, Amanda A.,Neto, Attilio Chiavegatti,Rosset, Isac G.,Jardim, Guilherme A. M.,Ferreira, Marco A. B.

, p. 3923 - 3942 (2021/04/02)

Herein, we report the synthesis of 3-carbonyl-trisubstituted furans via Pd-catalyzed oxidative cycloisomerization reactions of 2-alkenyl-1,3-dicarbonyl scaffolds, using molecular oxygen as the sole oxidant to regenerate active palladium catalytic species, featuring good functional tolerance and mild reaction conditions. Deep investigation of intermediates and transition states of the reaction mechanism were conducted via experimental and DFT studies, providing a detailed mechanistical profile. The new developed methodology presents a greener alternative to Wacker-type cycloisomerizations and avoids the use of stoichiometric amounts of oxidants and strong acid additives.

Method for preparing poly-substituted furan compound by condensing tricarbonyl compound under effect of titanium tetrachloride

-

Paragraph 0079-0081, (2017/11/04)

The invention provides a method for preparing a poly-substituted furan compound by condensing a tricarbonyl compound under an effect of titanium tetrachloride. The method comprises the following steps: by taking methylene dichloride or methylbenzene as a solvent, causing the tricarbonyl compound react with titanium tetrachloride while stirring under inert gas shielding, ending the reaction and then separating, thereby acquiring the poly-substituted furan compound. The compounding method provided by the invention has the characteristics of easily acquired raw materials, low cost, mild reaction condition, simple and easily controlled operation, less side reaction, simple post-processing, higher product yield, capability of greatly saving production cost, higher economic benefit and suitability for industrial mass production.

Polymer-supported selenium-induced electrophilic cyclization: Solid-phase synthesis of poly-substituted dihydrofurans and tetrahydrofurans

Tang,Huang, Xian,Xu, Wei-Ming

, p. 9963 - 9969 (2007/10/03)

Poly-substituted dihydrofurans and tetrahydrofurans have been synthesized through polymer-supported selenium-induced intramolecular electrophilic cyclization, followed by selenoxide syn-elimination or novel nucleophilic substitution cleavage of selenium resin with good yields and purities. Graphical Abstract

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 43020-09-3