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179117-29-4

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179117-29-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 179117-29-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,9,1,1 and 7 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 179117-29:
(8*1)+(7*7)+(6*9)+(5*1)+(4*1)+(3*7)+(2*2)+(1*9)=154
154 % 10 = 4
So 179117-29-4 is a valid CAS Registry Number.

179117-29-4Downstream Products

179117-29-4Relevant articles and documents

Preparation of chiral phosphorus, sulfur and selenium containing 2-aryloxazolines

Peer, Markus,De Jong, Johannes C.,Kiefer, Matthias,Langer, Thomas,Rieck, Heiko,Schell, Heico,Sennhenn, Peter,Sprinz, Juergen,Steinhagen, Henning,Wiese, Burkhard,Helmchen, Guenter

, p. 7547 - 7583 (2007/10/03)

A series of enantiomerically pure 2-[2-(diarylphosphino)aryl]-oxazolines was prepared from commercially available or synthetic amino alcohols. For oxazoline formation three procedures were employed: (i) one pot condensation with a 2-halobenzoic acid (ii) ZnCl2 catalyzed condensation with a 2-halobenzonitrile, and (iii) a three step sequence via a 2-halobenzamide and a tosylate or chloride. Phosphinooxazolines containing stereogenic phosphorous were prepared by either diastereoselective nucleophilic substitution of halogenide of Ar1Ar2PCl or by nucleophilic aromatic substitution with LiPAr1Ar2. In addition, sulfur and selenium analogs were prepared.

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