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51751-87-2

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51751-87-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 51751-87-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,7,5 and 1 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 51751-87:
(7*5)+(6*1)+(5*7)+(4*5)+(3*1)+(2*8)+(1*7)=122
122 % 10 = 2
So 51751-87-2 is a valid CAS Registry Number.

51751-87-2Relevant articles and documents

DIOLS AS EFFECTIVE COCATALYSTS IN THE PHASE TRANSFER CATALYZED PREPARATION OF 1-ALKYNES FROM 1,2-DIHALIDES

Dehmlow, Eckehard V.,Thieser, Rainer,Sasson, Yoel,Neumann, Ronny

, p. 3569 - 3574 (2007/10/02)

Bis-tertiary diols accelerate bis-eliminations of HX from 1,2-dihalides in the presence of an onium salt as phase transfer catalyst and potassium hydroxyde as base.PEG 400 catalyzes the same elimination, but isomerizations from 1-alkyne to mixtures with the 2-alkyne and the 1,2-diene occur easily.

POLY(STYRYLMETHYLTHIOL) AS AN EFFICIENT DEBROMINATING REAGENT OF 1,2-DIBROMIDES

Janout, Vaclav,Cefelin, Pavel

, p. 3913 - 3916 (2007/10/02)

Dibromides are readily debrominated by means of poly(styrylmethyl thiolate) with formation of the respective olefins.The polymeric reagent with a high content of sulphhydryl groups can be easily prepared from chloromethylated polystyrene; it extends possibilities of protection-deprotection reactions of the double bond.

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