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144493-15-2

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144493-15-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 144493-15-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,4,9 and 3 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 144493-15:
(8*1)+(7*4)+(6*4)+(5*4)+(4*9)+(3*3)+(2*1)+(1*5)=132
132 % 10 = 2
So 144493-15-2 is a valid CAS Registry Number.

144493-15-2Relevant articles and documents

Binuclear Pd(I)-Pd(I) Catalysis Assisted by Iodide Ligands for Selective Hydroformylation of Alkenes and Alkynes

Zhang, Yang,Torker, Sebastian,Sigrist, Michel,Bregovi?, Nikola,Dydio, Pawe?

supporting information, p. 18251 - 18265 (2020/11/02)

Since its discovery in 1938, hydroformylation has been thoroughly investigated and broadly applied in industry (>107 metric ton yearly). However, the ability to precisely control its regioselectivity with well-established Rh- or Co-catalysts has thus far proven elusive, thereby limiting access to many synthetically valuable aldehydes. Pd-catalysts represent an appealing alternative, yet their use remains sparse due to undesired side-processes. Here, we report a highly selective and exceptionally active catalyst system that is driven by a novel activation strategy and features a unique Pd(I)-Pd(I) mechanism, involving an iodide-assisted binuclear step to release the product. This method enables β-selective hydroformylation of a large range of alkenes and alkynes, including sensitive starting materials. Its utility is demonstrated in the synthesis of antiobesity drug Rimonabant and anti-HIV agent PNU-32945. In a broader context, the new mechanistic understanding enables the development of other carbonylation reactions of high importance to chemical industry.

Aqueous Sonogashira coupling of aryl halides with 1-alkynes under mild conditions: Use of surfactants in cross-coupling reactions

Roberts, Gina M.,Lu, Wenya,Woo, L. Keith

, p. 18960 - 18971 (2015/06/01)

Aqueous Sonogashira coupling between lipophilic terminal alkynes and aryl bromides or iodides gave moderate to high yields at 40°C using readily available and inexpensive surfactants (2.0 w/v% in water) such as SDS and CTAB. The catalyst precursor was 2 m

Improved palladium-catalyzed sonogashira coupling reactions of aryl chlorides

Torborg, Christian,Huang, Jun,Schulz, Thomas,Schaeffner, Benjamin,Zapf, Alexander,Spannenberg, Anke,Borner, Armin,Beller, Matthias

experimental part, p. 1329 - 1336 (2009/08/07)

The improved palladium-catalyzed Sonogashira coupling reactions of aryl chlorides without the necessity to add copper salts were analyzed for the development of palladacycles, adamantylphosphines, carhene ligands, and 2-phosphino-N-arylin-doles and -pyrro

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