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100944-90-9

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100944-90-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 100944-90-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,0,9,4 and 4 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 100944-90:
(8*1)+(7*0)+(6*0)+(5*9)+(4*4)+(3*4)+(2*9)+(1*0)=99
99 % 10 = 9
So 100944-90-9 is a valid CAS Registry Number.

100944-90-9Downstream Products

100944-90-9Relevant articles and documents

[1,2]-Wittig rearrangement from chloromethyl ethers

Gómez, Cecilia,Maciá, Beatriz,Lillo, Victor J.,Yus, Miguel

, p. 9832 - 9839 (2007/10/03)

The reaction of different chloromethyl ethers 1 with an excess of lithium powder and a catalytic amount of 4,4′-di-tert-butylbiphenyl (2.5 mol %) in THF at 0 °C leads to the corresponding α-lithiomethyl ether intermediates, through a chlorine-lithium exchange, which spontaneously undergo a clean [1,2]-Wittig rearrangement affording the expected homobenzylic alcohols 2. This is the first version of this rearrangement starting from easily available chloromethyl ethers.

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