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83253-79-6

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83253-79-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83253-79-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,2,5 and 3 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 83253-79:
(7*8)+(6*3)+(5*2)+(4*5)+(3*3)+(2*7)+(1*9)=136
136 % 10 = 6
So 83253-79-6 is a valid CAS Registry Number.

83253-79-6Downstream Products

83253-79-6Relevant articles and documents

Copper-Catalyzed [2 + 3] Cyclization of α-Hydroxyl Ketones and Arylacetonitriles: Access to Multisubstituted Butenolides and Oxazoles

Qi, Chaorong,Peng, Youbin,Wang, Lu,Ren, Yanwei,Jiang, Huanfeng

, p. 11926 - 11935 (2018/09/25)

A copper-catalyzed [2 + 3] formal cyclization reaction between α-hydroxyl ketones and arylacetonitriles has been developed. The reaction outcome was ultimately dependent on the structure of the α-hydroxy ketones employed. Tertiary α-hydroxy ketones gave 3,4,5,5-tetrasubstituted butenolides as the sole products, while secondary α-hydroxy ketones furnished 2,4,5-trisubstituted oxazoles selectively. This method has many advantages, such as the use of easily available substrates, broad substrate scope, good functional tolerance, and milder reaction conditions.

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