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42738-68-1

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42738-68-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 42738-68-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,7,3 and 8 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 42738-68:
(7*4)+(6*2)+(5*7)+(4*3)+(3*8)+(2*6)+(1*8)=131
131 % 10 = 1
So 42738-68-1 is a valid CAS Registry Number.

42738-68-1Relevant articles and documents

Solvent-controlled highly selective bis-and monoallylation of active methylene compounds by allyl acetate with palladium(0) nanoparticle

Ranu, Brindaban C.,Chattopadhyay, Kalicharan,Adak, Laksmikanta

, p. 4595 - 4598 (2008/03/12)

(Chemical Equation Presented) Palladium(0) nanoparticle has been used as an efficient catalyst for the allylation of active methylene compounds. Very efficient bisallylation is achieved for a variety of active methylene compounds by allyl acetate and its derivatives in one stroke in THF solvent. The reaction in water provides monoallylated product selectively by allyl acetate only. The recovered Pd(0) nanoparticle is recycled. A probable mechanism is suggested.

C-ALLYLATION OF CYCLIC β-DIKETONES IN AN ACIDIC MEDIUM WITH CATALYSIS BY Pd(0)

Lapitskaya, M. A.,Pivnitskii, K. K.

, p. 1665 - 1668 (2007/10/02)

A method is proposed for the C-alkylation of cyclic β-diketones by allyl acetate in a weakly acidic medium with Pd(PPh3)4 as catalyst.The method makes it possible to obtain high yields of the corresponding mono- and diallylated products.

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