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552333-50-3

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552333-50-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 552333-50-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,5,2,3,3 and 3 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 552333-50:
(8*5)+(7*5)+(6*2)+(5*3)+(4*3)+(3*3)+(2*5)+(1*0)=133
133 % 10 = 3
So 552333-50-3 is a valid CAS Registry Number.

552333-50-3Downstream Products

552333-50-3Relevant articles and documents

Cross-coupling of aryl halides and triflates with intramolecularly stabilized group 13-metal alkylating reagents in the presence of mixed-metal catalysts

Shenglof, Margarita,Gelman, Dmitri,Heymer, Bernd,Schumann, Herbert,Molander, Gary A.,Blum, Jochanan

, p. 302 - 306 (2003)

In the presence of tertiary phosphines, the palladium-containing mixed-metal complexes [(CO)4Fe(μ-PPh2)Pd(μ-Cl)]2(1) and [(CO)3Co]2(μ-CO)Pd[μ-(Ph2PCH 2)2] (2) catalyze the cross-coupling of aryl triflates and halides (including chlorides) with intramolecularly stabilized dialkylaluminum, -gallium and -indium reagents 3-8. The reactions are high yielding, and homocoupling and hydrodehalogenation processes are minimal even when the alkyl moieties of the alkylating reagents contain β-hydrogen atoms. As the components of the mixed-metal complexes are either poor catalysts, or completely inactive, the high catalytic activity of 1 and 2 is attributed to synergism between the different metal nuclei of the catalysts.

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