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674368-39-9

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674368-39-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 674368-39-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,4,3,6 and 8 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 674368-39:
(8*6)+(7*7)+(6*4)+(5*3)+(4*6)+(3*8)+(2*3)+(1*9)=199
199 % 10 = 9
So 674368-39-9 is a valid CAS Registry Number.

674368-39-9Downstream Products

674368-39-9Relevant articles and documents

Palladium-Catalyzed Carbon Dioxide Elimination-Fixation Reaction of 4-Methoxycarbonyloxy-2-buten-1-ols

Yoshida, Masahiro,Ohsawa, Yusuke,Ihara, Masataka

, p. 1590 - 1597 (2007/10/03)

A new type of palladium-catalyzed CO2 recycling reaction using allylic carbonates is described. Reaction of trans-4-methoxycarbonyloxy-2-buten-1-ols in the presence of a palladium catalyst produces cyclic carbonates having a vinyl group via a CO2 elimination-fixation process. A variety of allylic carbonates participate in the reaction giving cyclic carbonates with high efficiencies. Stereoselective construction of trans-cyclic carbonates is achieved by using nonsymmetric substrates. An enantiospecific reaction proceeds to give chiral cyclic carbonate when a chiral methyl-substituted substrate is subjected to the reaction conditions.

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