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219858-15-8

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219858-15-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 219858-15-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,8,5 and 8 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 219858-15:
(8*2)+(7*1)+(6*9)+(5*8)+(4*5)+(3*8)+(2*1)+(1*5)=168
168 % 10 = 8
So 219858-15-8 is a valid CAS Registry Number.

219858-15-8Relevant articles and documents

The Effect of Hydrogen Bonding on Allylic Alkylation and Isomerization Reactions in Ionic Liquids

Ross, James,Xiao, Jianliang

, p. 4900 - 4906 (2003)

Neutral allylic alkylation reactions, in which a base is generated in situ and which hence require no external bases, can significantly be retarded when carried out in the ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]). Evidence suggests that the base or base precursor enters into hydrogen bonding with the imidazolium cation and is thus made less readily available for deprotonation of pre-nucleophiles. However, the reaction proceeds well in the presence of stronger bases that are capable of deprotonation. Whilst the phenomenon of hydrogen bonding in ionic liquids can be detrimental to reactions such as allylic alkylation, it can be exploited to suppress unwanted allylic isomerization.

Catalytic intermolecular allylic C-H alkylation

Young, Andrew J.,White, M. Christina

supporting information; experimental part, p. 14090 - 14091 (2009/03/11)

The first electrophilic Pd(II)-catalyzed allylic C-H alkylation is reported, providing a novel method for formation of sp3-sp3 C-C bonds directly from C-H bonds. A wide range of aromatic and heteroaromatic linear (E)-α-nitro-arylpent

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