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1274906-21-6

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1274906-21-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1274906-21-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,7,4,9,0 and 6 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1274906-21:
(9*1)+(8*2)+(7*7)+(6*4)+(5*9)+(4*0)+(3*6)+(2*2)+(1*1)=166
166 % 10 = 6
So 1274906-21-6 is a valid CAS Registry Number.

1274906-21-6Relevant articles and documents

On the formation of seven-membered rings by arene-ynamide cyclization

Brutiu, Bogdan R.,Bubeneck, Wilhelm Andrei,Cvetkovic, Olivera,Li, Jing,Maulide, Nuno

, p. 3 - 10 (2018/11/23)

Abstract: A Br?nsted acid-catalyzed selective arene-ynamide cyclization is described. This reaction proceeds via a keteniminium intermediate and enables the preparation of seven-membered ring enamide products. Mechanistic studies uncover an unusual product inhibition behavior. Graphical abstract: [Figure not available: see fulltext.].

N-Substitution dependent stereoselectivity switch in palladium catalyzed hydroalkynylation of ynamides: A regio and stereoselective synthesis of ynenamides

Dwivedi, Vikas,Hari Babu, Madala,Kant, Ruchir,Sridhar Reddy, Maddi

supporting information, p. 14996 - 14999 (2015/10/12)

A highly general palladium catalysed regioselective hydroalkynylation of ynamides for versatile enamide building blocks with an alkyne tether is achieved with an N-substitution dependent stereoselectivity switch under very mild reaction conditions.

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