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1428246-15-4

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1428246-15-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1428246-15-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,8,2,4 and 6 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1428246-15:
(9*1)+(8*4)+(7*2)+(6*8)+(5*2)+(4*4)+(3*6)+(2*1)+(1*5)=154
154 % 10 = 4
So 1428246-15-4 is a valid CAS Registry Number.

1428246-15-4Downstream Products

1428246-15-4Relevant articles and documents

Asymmetric organocatalytic thio-diels-alder reactions via trienamine catalysis

Jiang, Hao,Cruz, David Cruz,Li, Yang,Lauridsen, Vibeke Henriette,J?rgensen, Karl Anker

supporting information, p. 5200 - 5207 (2013/05/22)

We report a new process to access highly enantioenriched sulfur-based heterocycles by an asymmetric catalytic thio-Diels-Alder reaction. Thiocarbonyls are challenging heterodienophiles in enantioselective Diels-Alder reactions, due to their inherent high reactivity and their poor ability to coordinate to chiral catalysts. We successfully circumvented these problems by employing a different strategy, which explores the use of in situ generated catalyst-bound dienes. Synthetically useful dihydrothiopyrans as well as other bi- and tricyclic sulfur-containing heterocycles are formed in high yields and high to excellent selectivities. DFT calculations were performed to examine the mechanism of the developed reaction. Furthermore, a series of synthetic transformations of the optically active sulfur-based heterocycles are presented.

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