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312-56-1

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312-56-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 312-56-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 3,1 and 2 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 312-56:
(5*3)+(4*1)+(3*2)+(2*5)+(1*6)=41
41 % 10 = 1
So 312-56-1 is a valid CAS Registry Number.

312-56-1Downstream Products

312-56-1Relevant articles and documents

Copper-catalyzed cross-coupling of chloramine salts and arylboronic acids in water: A green and practical route to N-arylsulfonamides

Ouyang, Banlai,Zheng, Yanxia,Liu, Yi,Liu, Fei,Yao, Juying,Peng, Yiyuan

, p. 3694 - 3698 (2018/09/14)

A green and practical method for the synthesis of N-arylsulfonamides from chloramine salts and arylboronic acids is herein developed. The reaction proceeds readily in the presence of 5 mol% of CuI and 2.5 equiv. K2CO3 in water at room temperature, generating a variety of N-arylsulfonamides in moderate to good yields with good functional group tolerance.

Rearrangement Reaction Based on the Structure of N-Fluoro- N-alkyl Benzenesulfonamide

Wang, Han-Ying,Pu, Xiao-Qiu,Yang, Xian-Jin

, p. 13103 - 13110 (2018/10/20)

A novel rearrangement reaction based on the structure of N-fluoro-N-alkyl benzenesulfonamide was developed. The reaction proceeded readily at 50 °C in formic acid and generated a variety of benzenesulfonamides and aldehydes or ketones simultaneously. The reaction mechanism is believed to be a concerted mechanism that consist of 1,2-aryl migration with the departure of fluorine anion via an SN2 mechanism. This rearrangement reaction features an interesting reaction mechanism, mild reaction conditions, simple operations, and a broad substrate scope.

Cu(OAc)2-catalyzed N-arylation of sulfonamides with arylboronic acids or trimethoxy(phenyl)silane

Pan, Changduo,Cheng, Jiang,Wu, Huayue,Ding, Jinchang,Liu, Miaochang

experimental part, p. 2082 - 2092 (2009/10/17)

Cu(OAc)2-catalyzed C-N bond-formation reaction of sulfonamides with organoboronic acids or trimethoxy(phenyl)silane was achieved in the presence of 20mol% of Cu(OAc)2, providing N-arylation products with yields ranging from moderate to good.

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