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7570-91-4

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7570-91-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 7570-91-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,5,7 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 7570-91:
(6*7)+(5*5)+(4*7)+(3*0)+(2*9)+(1*1)=114
114 % 10 = 4
So 7570-91-4 is a valid CAS Registry Number.

7570-91-4Relevant articles and documents

Fehnel,Carmack

, p. 2889,2891 (1949)

Copper-Catalyzed Methylthiolation of Aryl Iodides and Bromides with Dimethyl Disulfide in Water

Wang, Ying-Yu,Wu, Xiang-Mei,Yang, Ming-Hua

supporting information, (2020/07/20)

An efficient route to aryl methyl sulfides through the copper-catalyzed coupling reaction of aryl iodides or bromides with dimethyl disulfide in water is described. Electron-donating and electron-withdrawing functional groups in the substrates were tolerated, and the corresponding products were obtained in moderate to good yields.

Enantioselective copper catalysed intramolecular C-H insertion reactions of α-diazo-β-keto sulfones, α-diazo-β-keto phosphine oxides and 2-diazo-1,3-diketones; the influence of the carbene substituent

Shiely, Amy E.,Slattery, Catherine N.,Ford, Alan,Eccles, Kevin S.,Lawrence, Simon E.,Maguire, Anita R.

supporting information, p. 2609 - 2628 (2017/04/01)

Enantioselectivities in C-H insertion reactions, employing the copper-bis(oxazoline)-NaBARF catalyst system, leading to cyclopentanones are highest with sulfonyl substituents on the carbene carbon, and furthermore, the impact is enhanced by increased steric demand on the sulfonyl substituent (up to 91%ee). Enantioselective intramolecular C-H insertion reactions of α-diazo-β-keto phosphine oxides and 2-diazo-1,3-diketones are reported for the first time.

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