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84642-45-5

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84642-45-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 84642-45-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,6,4 and 2 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 84642-45:
(7*8)+(6*4)+(5*6)+(4*4)+(3*2)+(2*4)+(1*5)=145
145 % 10 = 5
So 84642-45-5 is a valid CAS Registry Number.

84642-45-5Relevant articles and documents

Preparation of 2-(trimethylsilyl)methyl-2-propen-1-ol derivatives by cobalt catalyzed sp2-sp3 coupling

Riaz, M. Tariq,Pohorilets, Ivanna,Hernandez, Jackson J.,Rios, Jeovanna,Totah, Nancy I.

, p. 2809 - 2812 (2018)

A practical, operationally simple preparation of 2-(trimethylsilyl)methyl-2-propen-1-ol derivatives is described. The cobalt catalyzed coupling of a protected vinyl halide with trimethylsilylmethylmagnesium chloride shows excellent functional group tolerance and provides these synthetically useful allyl silanes in good overall yield. By this method, the use of highly concentrated organolithium reagents, complex reaction protocols, and expensive starting materials is avoided.

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