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127820-39-7

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127820-39-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 127820-39-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,8,2 and 0 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 127820-39:
(8*1)+(7*2)+(6*7)+(5*8)+(4*2)+(3*0)+(2*3)+(1*9)=127
127 % 10 = 7
So 127820-39-7 is a valid CAS Registry Number.

127820-39-7Relevant articles and documents

Sonogashira reaction using arylsulfonium salts as cross-coupling partners

Tian, Ze-Yu,Wang, Shi-Meng,Jia, Su-Jiao,Song, Hai-Xia,Zhang, Cheng-Pan

, p. 5454 - 5457 (2017)

Triarylsulfonium, alkyl- and fluoroalkyl(diaryl)-sulfonium, and aryl(dialkyl)sulfonium triflates are successfully used as a new family of cross-coupling participants in the Sonogashira reaction as aryldiazonium, diaryliodonium, and tetraphenylphosphonium salts. It was found that terminal alkynes reacted mildly with triarylsulfonium or (2,2,2-trifluoroethyl)diphenylsulfonium triflate at room temperature under Pdand Cu-cocatalysis to give the corresponding arylalkynes in up to >99% yield. This protocol represents the first use of arylsulfonium salts as cross-coupling partners in the Pd/Cu-catalyzed Sonogashira reaction.

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