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1356053-15-0

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1356053-15-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1356053-15-0 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,5,6,0,5 and 3 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1356053-15:
(9*1)+(8*3)+(7*5)+(6*6)+(5*0)+(4*5)+(3*3)+(2*1)+(1*5)=140
140 % 10 = 0
So 1356053-15-0 is a valid CAS Registry Number.

1356053-15-0Downstream Products

1356053-15-0Relevant articles and documents

A highly efficient friedel-crafts reaction of 3-hydroxyoxindoles and aromatic compounds to 3,3-diaryl and 3-alkyl-3-aryloxindoles catalyzed by Hg(ClO4)2·3 H2O

Zhou, Feng,Cao, Zhong-Yan,Zhang, Jing,Yang, Hai-Bo,Zhou, Jian

supporting information; experimental part, p. 233 - 241 (2012/04/04)

We report a highly efficient Friedel-Crafts reaction of 3-alkyl or 3-aryl 3-hydroxyoxindoles with a variety of aromatic and heteroaromatic compounds to unsymmetrical 3,3-diaryloxindoles or 3-alkyl-3-aryloxindoles, which are interesting medicinal targets and useful building blocks for the synthesis of natural products. Hg(ClO4)2·3 H2O was identified as a powerful catalyst for this reaction, and is significantly more efficient than other screened metal perchlorate hydrates and Bronsted acids such as HOTf and HClO4. The high catalytic property of Hg(ClO4)2·3 H2O originates from the unprecedented dual activation effects of aromatic mercuration, which could generate a strong protic acid to facilitate the generation of a carbocation at the C3-position of oxindoles and simultaneously form the more reactive nucleophilic reaction partner.

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