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887501-04-4

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887501-04-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 887501-04-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,8,7,5,0 and 1 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 887501-04:
(8*8)+(7*8)+(6*7)+(5*5)+(4*0)+(3*1)+(2*0)+(1*4)=194
194 % 10 = 4
So 887501-04-4 is a valid CAS Registry Number.

887501-04-4Downstream Products

887501-04-4Relevant articles and documents

Copper(0) nanoparticle catalyzed Z-Selective Transfer Semihydrogenation of Internal Alkynes

Moran, Maria Jesus,Martina, Katia,Bieliunas, Vidmantas,Baricco, Francesca,Tagliapietra, Silvia,Berlier, Gloria,De Borggraeve, Wim M.,Cravotto, Giancarlo

, p. 2850 - 2860 (2021)

The use of copper(0) nanoparticles in the transfer semihydrogenation of alkynes has been investigated as a lead-free alternative to Lindlar catalysts. A stereo-selective methodology for the hydrogenation of internal alkynes to the corresponding (Z)-alkenes in high isolated yields (86% average) has been developed. This green and sustainable transfer hydrogenation protocol relies on non-noble copper nanoparticles for reduction of both electron-rich and electron-deficient, aliphatic-substituted and aromatic- substituted internal alkynes. Polyols, such as ethylene glycol and glycerol, have been proven to act as hydrogen sources, and excellent stereo- and chemoselectivity have been observed. Enabling technologies, such as microwave and ultrasound irradiation are shown to enhance heat and mass transfer, whether used alone or in combination, resulting in a decrease in reaction time from hours to minutes. (Figure presented.).

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