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1262432-84-7

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1262432-84-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1262432-84-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,6,2,4,3 and 2 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1262432-84:
(9*1)+(8*2)+(7*6)+(6*2)+(5*4)+(4*3)+(3*2)+(2*8)+(1*4)=137
137 % 10 = 7
So 1262432-84-7 is a valid CAS Registry Number.

1262432-84-7Downstream Products

1262432-84-7Relevant articles and documents

Role of pseudoephedrine as chiral auxiliary in the "acetate-Type" aldol reaction with chiral aldehydes; Asymmetric synthesis of highly functionalized chiral building blocks

Ocejo, Marta,Carrillo, Luisa,Vicario, Jose L.,Badia, Dolores,Reyes, Efraim

experimental part, p. 460 - 470 (2011/04/12)

We have studied in depth the aldol reaction between acetamide enolates and chiral α-heterosubstituted aldehydes using pseudoephedrine as chiral auxiliary under double stereodifferentiation conditions, showing that high diastereoselectivities can only be achieved under the matched combination of reagents and provided that the α-heteroatom-containing substituent of the chiral aldehyde is conveniently protected. Moreover, the obtained highly functionalized aldols have been employed as very useful starting materials for the stereocontrolled preparation of other interesting compounds and chiral building blocks such as pyrrolidines, indolizidines, and densely functionalized β-hydroxy and β-amino ketones using simple and high-yielding methodologies.

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