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699008-01-0

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699008-01-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 699008-01-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,9,0,0 and 8 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 699008-01:
(8*6)+(7*9)+(6*9)+(5*0)+(4*0)+(3*8)+(2*0)+(1*1)=190
190 % 10 = 0
So 699008-01-0 is a valid CAS Registry Number.

699008-01-0Downstream Products

699008-01-0Relevant articles and documents

Scope and limitations of lithium-ethylenediamine-THF-mediated cleavage at the α-position of aromatics: Deprotection of aryl methyl ethers and benzyl ethers under mild conditions

Shindo, Takeyuki,Fukuyama, Yasuaki,Sugai, Takeshi

, p. 692 - 700 (2004)

The scope and limitation of lithium-ethylenediamine-THF-mediated reductive bond cleavage at the α-position of aromatics were examined. Very mild conditions such as lithium metal (5 equiv) and ethylenediamine (7 equiv) in oxygen-free THF were quite effective for the demethylation of aromatic ethers even at as low as -10°C. Allyl benzyl ethers were also deprotected under these conditions with very little change of the allylic alcohol moiety. Through this study, 2,6-dimethylbenzyl (m-xylylmethyl, MXM) group was developed as an alternative of benzyl group, which is readily cleavable under the above mentioned reductive conditions.

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