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167897-42-9

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167897-42-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 167897-42-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,7,8,9 and 7 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 167897-42:
(8*1)+(7*6)+(6*7)+(5*8)+(4*9)+(3*7)+(2*4)+(1*2)=199
199 % 10 = 9
So 167897-42-9 is a valid CAS Registry Number.

167897-42-9Upstream product

167897-42-9Relevant articles and documents

Halide-promoted dioxygenolysis of a carbon-carbon bond by a copper(II) diketonate complex

Allpress, Caleb J.,Mi?aczewska, Anna,Borowski, Tomasz,Bennett, Jami R.,Tierney, David L.,Arif, Atta M.,Berreau, Lisa M.

, p. 7821 - 7824 (2014)

A mononuclear Cu(II) chlorodiketonate complex was prepared, characterized, and found to undergo oxidative aliphatic carbon-carbon bond cleavage within the diketonate unit upon exposure to O2 at ambient temperature. Mechanistic studies provide evidence for a dioxygenase-type C-C bond cleavage reaction pathway involving trione and hypochlorite intermediates. Significantly, the presence of a catalytic amount of chloride ion accelerates the oxygen activation step via the formation of a Cu-Cl species, which facilitates monodentate diketonate formation and lowers the barrier for O2 activation. The observed reactivity and chloride catalysis is relevant to Cu(II) halide-catalyzed reactions in which diketonates are oxidatively cleaved using O2 as the terminal oxidant. The results of this study suggest that anion coordination can play a significant role in influencing copper-mediated oxygen activation in such systems.

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