19854-23-0 Usage
General Description
Pyridine, 4-methyl-2-(trimethylsilyl)- (9CI) is a chemical compound with the molecular formula C9H13NSi. It is a derivative of pyridine, a heterocyclic compound consisting of a six-membered ring with five carbon atoms and one nitrogen atom. The presence of a trimethylsilyl group and a methyl group at the 2 and 4 positions, respectively, makes this compound useful as a building block in organic synthesis. It is commonly used in the pharmaceutical and agrochemical industries as a versatile reagent for the synthesis of various compounds. The trimethylsilyl group also provides protection for reactive functional groups during chemical reactions. Additionally, this compound is used as a reagent in the preparation of various other compounds, including insecticides, herbicides, and pharmaceuticals.
Check Digit Verification of cas no
The CAS Registry Mumber 19854-23-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,8,5 and 4 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 19854-23:
(7*1)+(6*9)+(5*8)+(4*5)+(3*4)+(2*2)+(1*3)=140
140 % 10 = 0
So 19854-23-0 is a valid CAS Registry Number.
19854-23-0Relevant articles and documents
CO2 Conversion into Esters by Fluoride-Mediated Carboxylation of Organosilanes and Halide Derivatives
Frogneux, Xavier,Von Wolff, Niklas,Thuéry, Pierre,Lefèvre, Guillaume,Cantat, Thibault
supporting information, p. 2930 - 2934 (2016/03/25)
A one-step conversion of CO2 into heteroaromatic esters is presented under metal-free conditions. Using fluoride anions as promoters for the C-Si bond activation, pyridyl, furanyl, and thienyl organosilanes are successfully carboxylated with CO2 in the presence of an electrophile. The mechanism of this unprecedented reaction has been elucidated based on experimental and computational results, which show a unique catalytic influence of CO2 in the C-Si bond activation of pyridylsilanes. The methodology is applied to 18 different esters, and it has enabled the incorporation of CO2 into a polyester material for the first time. Metal free! A novel methodology is described to convert CO2 into heteroaromatic esters in the presence of organosilanes and organic halides using fluoride anions as promoters for the C-Si bond activation (see scheme). CO2 exhibits a unique catalytic influence in the C-Si bond cleavage of pyridylsilanes, serving as a traceless activator.
