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18523-34-7

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18523-34-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18523-34-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,5,2 and 3 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 18523-34:
(7*1)+(6*8)+(5*5)+(4*2)+(3*3)+(2*3)+(1*4)=107
107 % 10 = 7
So 18523-34-7 is a valid CAS Registry Number.

18523-34-7Relevant articles and documents

Reduction and carbonylation of gem-dihalogeno cyclopropanes with iron pentacarbonyl

Reyne, F.,Brun, P.,Waegell, B.

, p. 4597 - 4600 (1990)

Reductive carbonylation of a gem-dibromo cyclopropane to carbomethoxycyclopropane can be achieved with excess Fe(CO)5 in DMF and an added nucleophile such as MeOH or MeONa.

Reductive Carbonylation of gem-Dihalogenocyclopropanes by Pentacarbonyliron(0) in the Presence of Sodium Methoxide

Reyne, Francoise,Waegell, Bernard,Brun, Pierre

, p. 1162 - 1167 (2007/10/02)

The reaction of gem-dihalogenocyclopropanes derivatives with (tetracarbonyl)(methoxycarbonylato)ferrate(I-) has been investigated; gem-dibromocyclopropanes and gem-chlorobromocyclopropane derivatives are reduced and carbonylated.It could be shown that a bromo ester such as methyl 1-bromo-2-phenylcyclopropanecarboxylate is an intermediate in the transformation of 1,1-dibromo-2-phenylcyclopropane into methyl cis- and trans-2-phenylcyclopropanecarboxylates and dimethyl 2-phenyl-1,1-cyclopropanedicarboxylate.

PRODUCTION OF 2-PHENYL-1-CYCLOPROPANONE ACETALS FROM 2,2-DIBROMO-1-PHENYLCYCLOPROPANE

Varakin, G. S.,Kostikov, R. R.,Ogloblin, K. A.

, p. 1569 - 1570 (2007/10/02)

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