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88132-61-0

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88132-61-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 88132-61-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,8,1,3 and 2 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 88132-61:
(7*8)+(6*8)+(5*1)+(4*3)+(3*2)+(2*6)+(1*1)=140
140 % 10 = 0
So 88132-61-0 is a valid CAS Registry Number.

88132-61-0Downstream Products

88132-61-0Relevant articles and documents

(Z)- and (E)-1,2-Bis(phenylsulfonyl)ethylenes as Synthetic Equivalents to Acetylene as Dienophile

Lucchi, Ottorino De,Lucchini, Vittorio,Pasquato, Lucia,Modena, Giorgio

, p. 596 - 604 (2007/10/02)

A new method for introducing an ethylenic bridge via a cycloaddition reaction has been developed.It makes use of either (Z)- or (E)-1,2-bis(phenylsulfonyl)ethylene (5 or 6) as synthetic equivalents of acetylene.The high activation due to the two sulfonyl groups promotes cycloaddition even to very unreactive dienes.The removal of the two sulfonyl groups for the required formation of the carbon-carbon double bond is promoted by reduction with metal amalgams in high yields.These properties, associated with the stability of the reagents and the ease of performance of the reactions, make this method a very useful synthetic tool for the preparation of polycyclic dienes and a valid alternative to the commonly available reagents that largely depend upon oxidative methods.

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