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24284-35-3

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24284-35-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 24284-35-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,4,2,8 and 4 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 24284-35:
(7*2)+(6*4)+(5*2)+(4*8)+(3*4)+(2*3)+(1*5)=103
103 % 10 = 3
So 24284-35-3 is a valid CAS Registry Number.

24284-35-3Relevant articles and documents

One-Pot Synthesis of 2-Aminobenzophenones from 2-Alkynyl Arylazides Catalyzed by Pd and Cu Precursors

Fan, Hui,Xu, Shijie,Yang, Fan,Zhang, Xiaoxiang,Zhao, Xuechun

supporting information, p. 4555 - 4558 (2021/08/30)

We describe a novel one-pot three-step reaction of 2-alkynyl arylazides through palladium-catalyzed formation of 3-hydroxy-3-phenylindolin-2-ones followed by hydrolysis of amide bonds and copper-catalyzed decarboxylation to give 2-aminobenzophenones. This synthetic method works well with various 2-alkynyl arylazides and affords the products in moderate to good yields under mild reaction conditions.

Preparation process of 3-peroxy-2-indolone compound in water phase

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Paragraph 0072-0074, (2019/06/07)

The invention relates to a preparation process of a 3-peroxy-2-indolone compound. The method comprises the steps of adopting a 2-indolone derivative as a raw material and water as a reaction solvent for a reaction with tert-butanol peroxide at a certain t

C(sp 3)-H Peroxidation of 3-Substituted Indolin-2-ones under Metal-Free Conditions

Ying, Wei-Wei,Zhu, Wen-Ming,Gao, Zhanghua,Liang, Hongze,Wei, Wen-Ting

, p. 663 - 667 (2017/12/26)

A C(sp 3)-H peroxidation of 3-substituted indolin-2-ones through radical coupling reaction has been developed under metal-free conditions. Using tert -butyl hydroperoxide both as an oxidant and as a peroxidation reagent to couple with the C(sp 3)-H bonds of 3-substituted indolin-2-ones can form a new C-O bond without using any additives. This simple strategy provides a green and efficient approach to 3-peroxyindolin-2-ones in moderate to excellent yields. The resulting 3-peroxyindolin-2-ones could be further transformed into 3-hydroxyindolin-2-ones.

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