Welcome to LookChem.com Sign In|Join Free

CAS

  • or

7642-42-4

Post Buying Request

7642-42-4 Suppliers

Recommended suppliersmore

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

7642-42-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 7642-42-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,4 and 2 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 7642-42:
(6*7)+(5*6)+(4*4)+(3*2)+(2*4)+(1*2)=104
104 % 10 = 4
So 7642-42-4 is a valid CAS Registry Number.

7642-42-4Downstream Products

7642-42-4Relevant articles and documents

Rh-catalyzed asymmetric hydrogenation of α-aryl-β-alkylvinyl esters with chiral ferrocenylphosphine-phosphoramidite ligand

Dong, Chao,Liu, Dao-Sheng,Zhang, Lei,Hu, Xiang-Ping

supporting information, (2021/02/03)

An enantioselective Rh-catalyzed hydrogenation of E/Z mixtures of trisubstituted vinyl esters has been disclosed. With a combination of [Rh(COD)2]BF4 and a structurally fine-tuning chiral ferrocenylphosphine-phosphoramidite ligand as the catalyst, a variety of E/Z mixtures of α-aryl-β-alkylvinyl esters have been successfully hydrogenated in high yields and with good to high enantioselectivities (up to 96% ee). The presence of a small amount of tBuOH proved to be beneficial to improve the hydrogenation outcome.

Visible light induced C-H monofluoroalkylation to synthesize 1,4-unsaturated compound

Li, Wei-peng,Zhu, Yu-cheng,Zhou, Yan-jun,Yang, Hong-wei,Zhu, Cheng-jian

, p. 1647 - 1651 (2019/01/22)

We developed a method to synthesize fluorinated 1,4-unsaturated dicarbonyl compounds via photoredox catalyzed radical addition process. Commercially available ethyl bromodifluoroacetate (BrCF2CO2Et) as fluoroalkyl source, the corresponding fluoro-containing dicarbonyl compounds could be obtained in moderate to good yields.

Homolytic carbostannylation of alkenes and alkynes with tributylstannyl enolates

Miura, Katsukiyo,Saito, Hiroshi,Fujisawa, Naoki,Wang, Di,Nishikori, Hisashi,Hosomi, Akira

, p. 4055 - 4057 (2007/10/03)

matrix presented In the presence of AIBN, tributylstannyl enolates derived from aromatic ketones reacted with electron-deficient alkenes and a variety of alkynes to give the corresponding carbostannylated adducts. The reactions with methyl acrylate gave α-tributylstannylmethyl-γ-ketoesters, unlike the known Michael-type reaction of stannyl enolates forming δ-ketoesters. The carbostannylation of alkynes proceeded in an anti addition mode to afford β,γ-unsaturated ketones. The reactivity of stannyl enolates as radical transfer agents could be utilized for radical cyclization of 1,6-enynes.

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 7642-42-4