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4198-15-6

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4198-15-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4198-15-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,1,9 and 8 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 4198-15:
(6*4)+(5*1)+(4*9)+(3*8)+(2*1)+(1*5)=96
96 % 10 = 6
So 4198-15-6 is a valid CAS Registry Number.

4198-15-6Relevant articles and documents

Amide synthesis by nucleophilic attack of vinyl azides

Zhang, Feng-Lian,Wang, Yi-Feng,Lonca, Geoffroy Herve,Zhu, Xu,Chiba, Shunsuke

supporting information, p. 4390 - 4394 (2014/05/06)

A method for the synthesis of amide-containing molecules was developed using vinyl azides as an enamine-type nucleophile towards carbon electrophiles, such as imines, aldehydes, and carbocations that were generated from alcohols in the presence of BF3OEt2. After nucleophilic attack of the vinyl azide, a substituent of the resulting iminodiazonium ion intermediate migrates to form a nitrilium ion, which is hydrolyzed to afford the corresponding amide. Nitrilium intermediate: A new method for amide synthesis employs vinyl azides as enamine-type nucleophiles towards carbon electrophiles in the presence of BF3OEt2. After nucleophilic attack of the vinyl azide, a substituent of the resulting iminodiazonium ion intermediate A migrates to form nitrilium ion B, which is hydrolyzed to afford the corresponding amide.

Efficient and regioselective synthesis of 5-hydroxy-2-isoxazolines: Versatile synthons for isoxazoles, β-lactams, and γ-amino alcohols

Tang, Shibing,He, Jinmei,Sun, Yongquan,He, Liuer,She, Xuegong

supporting information; experimental part, p. 1961 - 1966 (2010/06/20)

"Chemical Equation Presented" An efficient and highly regioselective protocol was developed for the preparation of 5-hydroxy2-isoxazolines, which have been proved to be versatile synthons for isoxazles, β-hydroxy oximes, and γ-amino alcohols. β-Lactams, commonly embedded in the skeletons of bioactive natural products, were also synthesized in two steps from β-hydroxy oximes, providing a new strategy for the synthesis of this kind of compounds.

Stereospecific cyclization of β-hydroxy aryl amides to β-lactams

Bose,Manhas,Sahu,Hegde

, p. 2498 - 2505 (2007/10/02)

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