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182210-43-1

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182210-43-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 182210-43-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,2,2,1 and 0 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 182210-43:
(8*1)+(7*8)+(6*2)+(5*2)+(4*1)+(3*0)+(2*4)+(1*3)=101
101 % 10 = 1
So 182210-43-1 is a valid CAS Registry Number.

182210-43-1Relevant articles and documents

Chiral zinc-catalyzed asymmetric α-alkylallylation and α-chloroallylation of aldehydes

Kobayashi, Sha,Endo, Toshimitsu,Ueno, Masaharu

supporting information; experimental part, p. 12262 - 12265 (2012/02/01)

Two birds with one stone: In the presence of Zn(OH)2 and a chiral bipyridine ligand, racemic α-substituted allylboronates 2 reacted with aldehydes 1 (see scheme) exclusively in an α-addition fashion to afford various homoallylic alcohols 3 bear

Diastereo- and enantioselective synthesis of syn-α-vinylchlorohydrins and cis-vinylepoxides

Hu, Shaojing,Jayaraman, Seetharaman,Oehlschlager, Allan C.

, p. 7513 - 7520 (2007/10/03)

A new method to generate chiral syn-vinylchlorohydrins and cis-vinyloxiranes is reported. Reaction of (α-haloallyl)lithiums with methoxy-9-BBN or Ipc2BOMe followed by treatment with BF3·OEt2 leads to (Z)-(γ-haloallyl)boranes which react with aldehydes to yield cis-vinylepoxides (de ≥ 90%) upon oxidative workup. Alternatively, addition of ethanolamine to the allylboration product yields syn-α-halohydrins (de ≥ 90%) that are also easily cyclized to cis-vinylepoxides. Extension of this protocol using [(Z)-γ-chloroallyl]BIpc2 leads to chiral syn-α-chlorohydrins and cis-vinylepoxides in high de (≥90%) and ee (90-99%). Enantioselectivity of reactions of chiral (Z)-(γ-chloroallyl)boranes with aldehydes are more sensitive to reaction conditions than enantioselectivity of reactions of other α-or γ-substituted allylboranes. The effects of proportion of BP3·OEt2 and the relative efficacies of LiNR2 bases on diastereo- and enantioselectivity of the chloroallylation are reported.

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