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Triphenylsilyl perchlorate, with the chemical formula (C6H5)3SiClO4, is a colorless crystalline compound that belongs to the class of organosilicon perchlorates. It is synthesized by the reaction of triphenylsilanol with perchloric acid and serves as a valuable reagent in organic synthesis, particularly in the formation of carbon-carbon bonds and the protection of alcohols. triphenylsilyl perchlorate is sensitive to moisture and air, and it is commonly used in the presence of anhydrous conditions. Due to its reactivity, triphenylsilyl perchlorate is a useful tool in the hands of chemists for various transformations, including the silylation of alcohols and the promotion of certain rearrangement reactions.

18557-58-9

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18557-58-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18557-58-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,5,5 and 7 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 18557-58:
(7*1)+(6*8)+(5*5)+(4*5)+(3*7)+(2*5)+(1*8)=139
139 % 10 = 9
So 18557-58-9 is a valid CAS Registry Number.

18557-58-9Upstream product

18557-58-9Downstream Products

18557-58-9Relevant academic research and scientific papers

Triphenylsilyl Perchlorate Revisited: 29Si and 35Cl NMR Spectroscopy and X-ray Crystallography Showing Covalent Nature in Both Solution and the Solid State. Difficulties in Observing Long-Lived Silyl Cations in the Condensed State

Prakash, G. K. Surya,Keyaniyan, Schahab,Aniszfeld, Robert,Heiliger, Ludger,Olah, George A.,et al.

, p. 5123 - 5126 (1987)

29Si and 35Cl NMR spectroscopic and X-ray crystallographic study of triphenylsilyl perchlorate shows it to be a covalent perchloryl ester in both solution and the solid state.The results are in accord with earlier studies notably those of Wannagat but con

Continued search for elusive persistent trivalent organosilyl cations: The claimed trimethylsilyl cation revisited. Attempted preparation of cyclic and halogen-bridged organosilicenium ions

Olah, George A.,Rasul, Golam,Heiliger, Ludger,Bausch, Joseph,Surya Prakash

, p. 7737 - 7742 (2007/10/02)

Comparison of ab initio/IGLO calculated 1H, 13C, and 29Si NMR chemical shifts with the experimental data on trimethylsilyl perchlorete and related derivatives supports the conclusion that no long-lived persistent trimethyl

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