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94540-42-8

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94540-42-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 94540-42-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,4,5,4 and 0 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 94540-42:
(7*9)+(6*4)+(5*5)+(4*4)+(3*0)+(2*4)+(1*2)=138
138 % 10 = 8
So 94540-42-8 is a valid CAS Registry Number.

94540-42-8Relevant articles and documents

Asymmetric arylation of ketone enolates

Ahman,Wolfe,Troutman,Palucki,Buchwald

, p. 1918 - 1919 (1998)

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Enantioselective α-arylation of cyclic ketones catalyzed by a combination of an unmodified Cinchona alkaloid and a palladium complex

Richter, Christian,Ranganath, Kalluri V. S.,Glorius, Frank

supporting information; experimental part, p. 377 - 382 (2012/04/11)

A palladium/Cinchona alkaloid-catalyzed α-arylation between cyclic ketones and aryl halides under phosphine-free conditions is presented. The use of a simple, unmodified Cinchona alkaloid results in high levels of activity and selectivity with up to 93% ee. These enantioinduction levels are comparable or even higher than the ones reported using palladium/BINAP complexes. To the best of our knowledge, this represents the first use of unmodified Cinchona alkaloids as ligands/catalysts in asymmetric transition metal complex-catalyzed cross-coupling reactions. Copyright

Synthesis and reactivity of chiral pentavalent bismuth derivatives

Finet,Fedorov

, p. 1488 - 1495 (2007/10/03)

Eight new pentavalent organobismuth derivatives were synthesized by the reactions of triphenylbismuth or phenyl-2,2"-biphenylenebismuth with chiral (1R)-(-)-camphor-10-sulfonic, (-)-menthyloxyacetic, or (R)-3-phenylbutyric acids. Enantioselective C-arylat

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