Welcome to LookChem.com Sign In|Join Free

CAS

  • or

949-47-3

Post Buying Request

949-47-3 Suppliers

Recommended suppliersmore

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

949-47-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 949-47-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 9,4 and 9 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 949-47:
(5*9)+(4*4)+(3*9)+(2*4)+(1*7)=103
103 % 10 = 3
So 949-47-3 is a valid CAS Registry Number.

949-47-3Relevant articles and documents

Alkyne oligomerization catalyzed by molybdenum(0) complexes

Ardizzoia, G.Attilio,Brenna,LaMonica,Maspero,Masciocchi

, p. 173 - 180 (2002)

Three new molybdenum(0) complexes, [Mo(CO)3(Hpz)3] (1), [Mo(CO)2(Hpz)2(DMAD)2] (2), (DMAD = dimethyl acetylenedicarboxylate) and [Mo(CO)3(1-Me-imidazole)3] (3) were synthesized and characterized. Their activity and selectivity in alkyne cyclotrimerization and co-trimerization reactions was investigated. The molecular structures of 1 and 2 have been determined by unconventional powder and standard single-crystal diffraction methods, respectively. 1 consists of a pseudo-octahedral complex of C3 symmetry, with the ligands in fac disposition; complex 2, of idealized C2 symmetry, is obtained by substitution of one CO and one pyrazole in 1 by two DMAD ligands, and shows the rare trans configuration of π-bound acetylenic moieties.

Can the Ti(OiPr)4/nBuLi combination of reagents function as a catalyst for [2+2+2] alkyne cyclotrimerisation reactions?

Siemiaszko, Gabriela,Six, Yvan

supporting information, p. 20219 - 20226 (2018/12/13)

Catalysis of the cyclotrimerisation of alkynes with the Ti(OiPr)4/nBuLi system was studied, leading to the development of a particularly convenient and reliable protocol. This method allows the [2+2+2] cycloaddition reaction to proceed within a few minutes under microwave conditions, with generally good selectivity from a variety of aromatic and aliphatic alkynes.

STRUCTURAL INVESTIGATION ON SOME TRISISOPROPENYL-BENZENES BY THEORETICAL AND GAS-PHASE UV PHOTOELECTRON SPECTROSCOPIC STUDY

Andoni, E.,Bossa, M.,Carusi, P.,Cauletti, C.,Furlani, A.

, p. 115 - 122 (2007/10/02)

The structure of 1,3,5-trisisopropenylbenzene (I) and 1,2,4-trisiopropenylbenzene (II) was investigated by gas-phase UV photoelectron spectroscopy (UPS) and theoretical (HAM 3) calculations.In the case of compound I we found that the geometrical parameters do not affect appreciably the ordering and spacing of the highest occupied molecular orbitals whereas in II agreement between experimental and calculated IEs was found only for some geometries, characterized also by the lowest total energies.This difference is reflected in the spacing of energy levels in the two molecules.

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 949-47-3