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40814-69-5

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40814-69-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40814-69-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,8,1 and 4 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 40814-69:
(7*4)+(6*0)+(5*8)+(4*1)+(3*4)+(2*6)+(1*9)=105
105 % 10 = 5
So 40814-69-5 is a valid CAS Registry Number.

40814-69-5Relevant articles and documents

Novel Transformations of 1,2-Dioxetanes: β-Hydroxy Ethers by Addition of Alkyllithium Reagents

Adam, Waldemar,Heil, Markus

, p. 235 - 241 (2007/10/02)

The reaction of 1,2-dioxetanes with alkyllithium reagents was investigated.The 3,3-disubstituted dioxetanes 2a,d and their halogen-substituted analogues 2b,c, which were used as probes to differentiate between the mechanistic alternatives (SN2 reactivity vs. single-electron transfer), reacted with n-BuLi to afford the β-hydroxy ethers 3a-d.Additionally, the epoxide 4 was obtained from dioxetanes 2b,c.The epoxide 5 and a small amount of acetophenone were found in the reaction of dioxetane 2c with triphenylmethyllithium, but only the minor part of the dioxetane-derived products could be identified.The observation of the epoxides 4 and 5 led to the mechanistic conclusion that nucleophilic attack (SN2 reactivity) is the most prominent process in this reaction.Key Words: Dioxetanes / Single electron transfer vs. nucleophilic attack / Ethers, β-hydroxy / Alkyllithium reagents

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