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55510-25-3

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55510-25-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 55510-25-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,5,1 and 0 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 55510-25:
(7*5)+(6*5)+(5*5)+(4*1)+(3*0)+(2*2)+(1*5)=103
103 % 10 = 3
So 55510-25-3 is a valid CAS Registry Number.

55510-25-3Relevant articles and documents

Dual Roles of Rongalite: Reductive Coupling Reaction to Construct Thiosulfonates Using Sulfonyl Hydrazides

Zhang, Guofu,Fan, Qiankun,Zhao, Yiyong,Wang, Huimin,Ding, Chengrong

supporting information, p. 81 - 85 (2020/11/03)

A tunable and practical transformation of structurally diverse sulfonyl hydrazides into thiosulfonates in the presence of Rongalite (NaHSO 2·CH 2O) was developed. Transition-metal-free conditions, operational simplicity, and readily available reagents are the striking features of this protocol. It is the first example for the synthesis of thiosulfonates using sulfonyl hydrazides with the assistance of reductant. Additionally, the mechanistic studies revealed that this transformation probably undergoes via a reducing-coupling pathway.

Electrochemical Annulation-Iodosulfonylation of 1,5-Enyne-containing para-Quinone Methides (p-QMs) to Access (E)-Spiroindenes

Zuo, Hang-Dong,Zuo, Hang-Dong,Hao, Wen-Juan,Zhu, Chi-Fan,Zhu, Chi-Fan,Guo, Cheng,Tu, Shu-Jiang,Jiang, Bo

supporting information, p. 4471 - 4477 (2020/06/04)

A new electrochemical three-component annulation-iodosulfonylation of 1,5-enyne-containing para-quinone methides (p-QMs) has been established by using available arylsulfonyl hydrazides and potassium iodide under environmentally benign conditions. The electrosynthesis offers sustainable and efficient access to construct spirocyclohexadienone-containing (E)-indenes without any additional catalyst or oxidant through a sulfonyl-radical-triggered 1,6-addition and an I+-mediated ipso-cyclization cascade. Notably, potassium iodide plays the triple role of an electrolyte, a redox catalyst, as well as an iodination reagent.

Palladium-Catalyzed Regio- and Stereoselective Sulfonylation of Aryl Propiolates with Sulfonyl Hydrazides: Access to (E)-β-Aryl Sulfonyl Acrylates

Jiang, Huanfeng,Yan, Wuxin,Huang, Jiuzhong,Tan, Chaowei,Zhan, Lingzhi,Wu, Wanqing

supporting information, p. 4575 - 4580 (2019/09/16)

An efficient method for the synthesis of (E)-β-aryl sulfonyl acrylates has been reported. This palladium-catalyzed approach showed excellent regio- and stereoselectivity in the sulfonylation of aryl propiolates with sulfonyl hydrazides. Through this approach, a wide range of (E)-β-aryl sulfonyl acrylates were obtained in moderate to high yields. (Figure presented.).

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