Welcome to LookChem.com Sign In|Join Free

CAS

  • or

90956-80-2

Post Buying Request

90956-80-2 Suppliers

Recommended suppliersmore

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

90956-80-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90956-80-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,9,5 and 6 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 90956-80:
(7*9)+(6*0)+(5*9)+(4*5)+(3*6)+(2*8)+(1*0)=162
162 % 10 = 2
So 90956-80-2 is a valid CAS Registry Number.

90956-80-2Relevant articles and documents

Synthesis of Thiazoles and Isothiazoles via Three-Component Reaction of Enaminoesters, Sulfur, and Bromodifluoroacetamides/Esters

Ma, Xingxing,Yu, Xiaoxia,Huang, Hua,Zhou, Yao,Song, Qiuling

supporting information, p. 5284 - 5288 (2020/07/14)

A three-component strategy for the synthesis of thiazoles and isothiazoles has been developed by employing enaminoesters, fluorodibromoiamides/ester, and sulfur. The thiazoles and isothiazoles were formed via two C-F bond cleavages along with the formation of new C-S, C-N, and N-S bonds. The strategy provides high selectivity for the synthesis of thiazoles/isothiazoles, which have vital applications in drug discovery and development.

Divergent Synthesis of Multisubstituted Unsymmetric Pyrroles and Pyrrolin-4-ones from Enamino Esters via Copper-Catalyzed Aerobic Dimerization

Chen, Zhi-Wei,Zheng, Lei,Liu, Jin

, p. 3051 - 3060 (2019/05/24)

A facile synthetic method to access multisubstituted unsymmetric pyrrole and pyrrolin-4-one derivatives is disclosed. In the presence of Cu(OAc)2 and KOAc, substituted pyrrole derivatives are produced in good yields (up to 93 %) through oxidative cyclization of enamino esters. Meanwhile, using CuCl2 and TFA (trifluoroacetic acid), pyrrolin-4-one derivatives are obtained in excellent yields (up to 94 %) through 1,2-aryl migration. A wide range of functional groups have been tolerated, and a reliable method for the synthesis of valuable multisubstituted pyrroles and pyrrolin-4-ones has been developed.

Copper-Catalyzed Tandem Reaction of Enamino Esters with ortho-Halogenated Aromatic Carbonyls: One-Pot Approach to Functionalized Quinolines

Peng, Fei,Liu, Jin,Li, Lili,Chen, Zhiwei

supporting information, p. 666 - 672 (2018/02/14)

An efficient and practical approach for the synthesis of functionalized quinolines has been developed by using the copper-catalyzed tandem C–C bond formation and C–N coupling reaction of enamino esters and ortho-halogenated aromatic carbonyl compounds. Various functional groups were tolerated under the reaction conditions, and a series of quinolines were easily obtained in moderate to good yields. A gram-scale reaction was also performed to demonstrate a further application of this synthetic method.

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 90956-80-2