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143192-64-7

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143192-64-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143192-64-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,1,9 and 2 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 143192-64:
(8*1)+(7*4)+(6*3)+(5*1)+(4*9)+(3*2)+(2*6)+(1*4)=117
117 % 10 = 7
So 143192-64-7 is a valid CAS Registry Number.

143192-64-7Relevant articles and documents

Integrated Chemical Process: One-Pot Double Elimination Method for Acetylenes

Orita, Akihiro,Yoshioka, Naonori,Struwe, Petra,Braier, Arnold,Beckmann, Anke,Otera, Junzo

, p. 1355 - 1363 (2007/10/03)

A novel one-pot process for synthesis of acetylenes has been achieved in which the following series of steps are integrated: addition of an α-anion of sulfone to aldehyde; trapping of the resulting adduct to incorporate a leaving group, and double elimination of this intermediate. Consolidation of Peterson elimination renders the process much simpler. This method provides a convenient and high-yielding access to a variety of enynes and polyynes as well as to functionally substituted aryl acetylenes containing halogen(s) or acetal groups, which are useful building blocks for aryl acetylene scaffolds. Iteration of the one-pot generation of acetylenic bonds provides a new metodology for the buildup of aryl acetylene skeletons.

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