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18857-43-7

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18857-43-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18857-43-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,8,5 and 7 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 18857-43:
(7*1)+(6*8)+(5*8)+(4*5)+(3*7)+(2*4)+(1*3)=147
147 % 10 = 7
So 18857-43-7 is a valid CAS Registry Number.

18857-43-7Relevant articles and documents

Electrophilic Organobismuth Dication Catalyzes Carbonyl Hydrosilylation

Kannan, Ramkumar,Balasubramaniam, Selvakumar,Kumar, Sandeep,Chambenahalli, Raju,Jemmis, Eluvathingal D.,Venugopal, Ajay

supporting information, p. 12717 - 12721 (2020/09/09)

Bismuth compounds are gaining importance as potential alternatives to transition-metal complexes and electron deficient lighter p-block compounds in homogeneous catalysis. Computational analysis on the two-coordinate [(Me2NC6H4)Bi]2+ possessing three electrophilic sites is experimentally evidenced by the isolation of [{Me2NC6H4}Bi{OP(NMe2)3}3][B(3,5-C6H3Cl2)4]2. These observations led us to generate dicationic organobismuth catalyst, [(Me2NC6H4)Bi(L)3]2+ (L=aldehyde/ketone), evidenced by NMR spectroscopy in solution and by single-crystal X-ray diffraction in the solid state. It efficiently catalyzes hydrosilylation of aldehydes and ketones resulting in silyl ethers as the only products in high yields. Our investigations support a carbonyl activation mechanism at the bismuth center followed by Si?H addition.

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