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220925-03-1

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220925-03-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 220925-03-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,9,2 and 5 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 220925-03:
(8*2)+(7*2)+(6*0)+(5*9)+(4*2)+(3*5)+(2*0)+(1*3)=101
101 % 10 = 1
So 220925-03-1 is a valid CAS Registry Number.

220925-03-1Relevant articles and documents

Chiral β-phosphino sulfoxides as chiral ligands in palladium-catalyzed asymmetric allylic nucleophilic substitution reactions

Hiroi, Kunio,Suzuki, Yoshio,Kawagishi, Ryoko

, p. 715 - 718 (1999)

The first attempt to use chiral β-phosphino sulfoxides as chiral ligands was successfully accomplished in a palladium-catalyzed asymmetric allylic alkylation and amination, providing extremely high enantioselectivity with chiral 2-(diphenyl-phosphino)phenyl 2-methoxy-1-naphthyl sulfoxide. The structure of the intermediary palladium complex chelated by the ligand was determined by the X-ray crystallographic analysis. The mechanism for the asymmetric induction is proposed on the basis of the stereochemical results obtained.

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