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6934-33-4

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6934-33-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 6934-33-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,9,3 and 4 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 6934-33:
(6*6)+(5*9)+(4*3)+(3*4)+(2*3)+(1*3)=114
114 % 10 = 4
So 6934-33-4 is a valid CAS Registry Number.

6934-33-4Relevant articles and documents

Shuttle arylation by Rh(I) catalyzed reversible carbon–carbon bond activation of unstrained alcohols

Lutz, Marius D.R.,Gasser, Valentina C.M.,Morandi, Bill

supporting information, p. 1108 - 1119 (2021/04/19)

The advent of transfer hydrogenation and borrowing hydrogen reactions paved the way to manipulate simple alcohols in previously unthinkable manners and circumvented the need for hydrogen gas. Analogously, transfer hydrocarbylation could greatly increase the versatility of tertiary alcohols. However, this reaction remains unexplored because of the challenges associated with the catalytic cleavage of unactivated C–C bonds. Herein, we report a rhodium(I)-catalyzed shuttle arylation cleaving the C(sp2)–C(sp3) bond in unstrained triaryl alcohols via a redox-neutral β-carbon elimination mechanism. A selective transfer hydrocarbylation of substituted (hetero)aryl groups from tertiary alcohols to ketones was realized, employing benign alcohols as latent C-nucleophiles. All preliminary mechanistic experiments support a reversible β-carbon elimination/migratory insertion mechanism. In a broader context, this novel reactivity offers a new platform for the manipulation of tertiary alcohols in catalysis.

Goldberg Active Template Synthesis of a [2]Rotaxane Ligand for Asymmetric Transition-Metal Catalysis

Hoekman, Steven,Kitching, Matthew O.,Leigh, David A.,Papmeyer, Marcus,Roke, Diederik

supporting information, p. 7656 - 7659 (2015/06/30)

We report on the active template synthesis of a [2]rotaxane through a Goldberg copper-catalyzed C-N bond forming reaction. A C2-symmetric cyclohexyldiamine macrocycle directs the assembly of the rotaxane, which can subsequently serve as a ligan

Chloride anion triggered motion in a bis-imidazolium rotaxane

Serpell, Christopher J.,Chall, Ricky,Thompson, Amber L.,Beer, Paul D.

supporting information; experimental part, p. 12052 - 12055 (2012/01/14)

We report the first bis-imidazolium-containing rotaxane, synthesised via anion templated self-assembly. Its co-conformation is controlled by a chloride anion recognition mechanism, thus demonstrating the viability of this protocol as a stimulus for shuttl

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