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129432-79-7

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129432-79-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129432-79-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,4,3 and 2 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 129432-79:
(8*1)+(7*2)+(6*9)+(5*4)+(4*3)+(3*2)+(2*7)+(1*9)=137
137 % 10 = 7
So 129432-79-7 is a valid CAS Registry Number.

129432-79-7Relevant articles and documents

Acid-catalyzed chirality-transferring intramolecular Friedel-Crafts cyclization of α-hydroxy-α-alkenylsilanes

Sakaguchi, Kazuhiko,Kubota, Shunnichi,Akagi, Wataru,Ikeda, Naoko,Higashino, Masato,Ariyoshi, Shoma,Shinada, Tetsuro,Ohfune, Yasufumi,Nishimura, Takahiro

, p. 8635 - 8638 (2019)

Acid-catalyzed intramolecular Friedel-Crafts cyclization of optically active α-hydroxy-α-alkenylsilanes possessing a benzene ring (>99% ee) with TMSOTf as a Lewis acid gave enantio-enriched tetrahydronaphthalenes (up to 98% ee). The silyl group attached to the chiral carbon played a crucial role in the chirality transfer.

Synthesis of 1-Acyl-2-alkylcyclopropanecarboxylic Esters from 2-Alkenylphosphonium Salts

Jacoby, D.,Celerier, J. P.,Petit, H.,Lhommet, G.

, p. 301 - 304 (2007/10/02)

The one-pot reaction of allyltriphenylphosphonium bromide with the sodium salts of β-keto esters leads to the formation of alkyl 1-acyl-2-alkylcyclopropanecarboxylates.

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