628-41-1 Usage
Chemical Properties
colourless liquid
Uses
Different sources of media describe the Uses of 628-41-1 differently. You can refer to the following data:
1. Reagent for selectively cleaving benzyl esters in the presence of benzyl ethers by catalytic H-transfer.
2. Forms benzene at elevated temperatures in the presence of a ruthenium(II)-triphenylphosphine catalyst.1
3. 1,4-Cyclohexadiene is used to study the formation of parent ion from heavy fragmentation on irradiation with a high-intensity laser pulse. It is also used as a very effective hydrogen donor for catalytic hydrogenation reaction. It forms benzene at elevated temperatures in the presence of a ruthenium(II)-triphenylphosphine catalyst.
General Description
1,4-Cyclohexadiene is an effective hydrogen donor for catalytic hydrogenation reactions. It can rapidly replace benzyl groups of N-benzyloxycarbamates, benzyl esters, benzyl ethers and benzyl amines with hydrogen. It forms benzene at elevated temperatures in the presence of a ruthenium(II)-triphenylphosphine catalyst.
Purification Methods
Dry the diene over CaCl2 and distil it in a vacuum under N2. [Hückel & W.rffel Chem Ber 88 338 1955, Giovannini & Wegmüller Helv Chim Acta 42 1142 1959.] [Beilstein 5 IV 385.]
Check Digit Verification of cas no
The CAS Registry Mumber 628-41-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,2 and 8 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 628-41:
(5*6)+(4*2)+(3*8)+(2*4)+(1*1)=71
71 % 10 = 1
So 628-41-1 is a valid CAS Registry Number.
InChI:InChI=1/C6H8/c1-2-4-6-5-3-1/h1-2,5-6H,3-4H2
628-41-1Relevant articles and documents
Photochemical Rearrangements of C6H8, C7H10, and C8H12 Radical Cations in Solid Argon at 20 K
Kelsall, Benuel J.,Andrews, Lester
, p. 2723 - 2729 (2007/10/02)
C6H8 radical cations have been produced by matrix photoionization techniques and trapped in solid argon.Electronic spectra show that two different types of products are formed; a conjugated diene cation with strong and weak absorption between 30000 and 20000 cm-1 and conjugated triene cations with a strong absorption between 28000 and 22000 cm-1 and weak absorptions between 18000 and 14000 cm-1.With selective photolysis in the high-energy bands, the conjugated triene cation geometric isomers were interconverted while the cyclic diene cations were ring opened to give conjugated triene cations.Similar experiments with cyclic and bicyclic C7H10 cations gave three conjugated heptatriene cation conformers, and cyclic C8H12 cations yielded a number of conjugated octatriene cation isomers.
