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1253857-74-7

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1253857-74-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1253857-74-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,3,8,5 and 7 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1253857-74:
(9*1)+(8*2)+(7*5)+(6*3)+(5*8)+(4*5)+(3*7)+(2*7)+(1*4)=177
177 % 10 = 7
So 1253857-74-7 is a valid CAS Registry Number.

1253857-74-7Downstream Products

1253857-74-7Relevant articles and documents

A novel efficient method for synthesis of propargylamines via three-component coupling of aryl azide, aldehyde, and alkyne promoted by iron-iodine-copper(I) bromide

Zhang, Kui,Huang, You,Chen, Ruyu

supporting information; experimental part, p. 5463 - 5465 (2010/10/20)

A novel, efficient method has been developed for the synthesis of propargylamines through a three-component coupling of aryl azides, aldehydes, and alkynes in the presence of iron-iodine-copper(I) bromide as catalyst. This method is the first example for directly using aryl azides as an amino component in a three-component coupling reaction. Some of the major advantages of this protocol are: good yields, the involvement of a less-expensive and non-toxic catalyst, mild reaction conditions, and a wide range of substrates.

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