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124948-53-4

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124948-53-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 124948-53-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,4,9,4 and 8 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 124948-53:
(8*1)+(7*2)+(6*4)+(5*9)+(4*4)+(3*8)+(2*5)+(1*3)=144
144 % 10 = 4
So 124948-53-4 is a valid CAS Registry Number.

124948-53-4Relevant articles and documents

1,3-Dipolar Cycloaddition of Imidate Ylides on Imino-Alcohols: Synthesis of New Imidazolones Using Solvent Free Conditions.

Lerestif, Jean Michel,Perrocheau, Jacques,Tonnard, Francois,Bazureau, Jean Pierre,Hamelin, Jack

, p. 6757 - 6774 (1995)

Imidates derived from α-amino esters as potential azomethine ylides, undergo 1,3-dipolar cycloaddition with imino-alcohols, in tautomeric equilibrium with 1,3-oxazolidines, without solvent at 70 deg C or under microwave irradiation.This reaction leads to a wide range of novel polyfunctionalized 4-yliden-2-imidazolin-5-ones in good yields with short reaction times.The reactivity of these imidates derived from α-amino esters with imino-alcohols is rationalized from the energy of the Frontier Molecular Orbitals (FMO) determined by semi-empirical PM3 calculations : the reaction is controlled by the interaction HOMO(1,3-dipole) - LUMO(dipolarophile) and the second order perturbation energy calculations are in agreement with the experimental reaction orientation.

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