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138691-47-1

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138691-47-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138691-47-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,6,9 and 1 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 138691-47:
(8*1)+(7*3)+(6*8)+(5*6)+(4*9)+(3*1)+(2*4)+(1*7)=161
161 % 10 = 1
So 138691-47-1 is a valid CAS Registry Number.

138691-47-1Downstream Products

138691-47-1Relevant articles and documents

Reactivity of Nitro- and Nitroso-arenes with Vinyl Grignard Reagents: Synthesis of 2-(Trimethylsilyl)indoles

Bartoli, Giuseppe,Bosco, Marcella,Dalpozzo, Renato,Palmieri, Gianni,Marcantoni, Enrico

, p. 2757 - 2762 (2007/10/02)

The reaction of nitrosoarenes and 1-(trimethylsilyl)vinylmagnesium bromide in dibutyl ether represents a useful tool for the synthesis of 2-(trimethylsilyl)indoles by cyclisation of benzene derivatives.The use of more common ethers as the solvent leads to large amounts of azo and azoxy derivatives.Conversely, the reaction of nitroarenes and 1-(trimethylsilyl)vinylmagnesium bromide gives conjugate addition products.The reasons for this behaviour are discussed.

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