19295-34-2

Usage

Uses

Used in Organic Synthesis:
Pyridinium, 1-ethenylis used as a reagent in organic synthesis for its ability to participate in a range of chemical reactions, including electrophilic substitutions, due to its strong positive charge.
Used in Pharmaceutical Industry:
In the pharmaceutical industry, Pyridinium, 1-ethenylis utilized as a building block for the development of new drugs, leveraging its reactivity to form complex molecular structures with potential therapeutic properties.
Used in Agrochemicals:
Pyridinium, 1-ethenylis employed in the agrochemical sector for the synthesis of active ingredients in pesticides and herbicides, where its reactivity allows for the creation of compounds with specific pesticidal or herbicidal activities.
Used in Materials Science:
In materials science, Pyridinium, 1-ethenylis used as a component in the development of new materials with unique properties, such as conductive polymers or advanced composites, owing to its capacity to engage in various chemical transformations.

Upstream product

• 882-35-9 1,1'-(1,2-Ethanediyl)bis(pyridinium) dibromide 

Relevant academic research and scientific papers

Kinetics and mechanism of the formation of N-vinyl pyridinium cations in elimination reactions in aqueous base

The rates of the elimination reactions of N-(2-bromoethyl) pyridinium cations (1) and N,N'-ethylene bispyridinium dications (3) to give the corresponding N-vinyl pyridinium cations (2) have been measured spectrophotometrically in basic aqueous solutions (ionic strength 0.1, 25 deg C) for a variety of substituents in the pyridine rings of each of these classes of pyridinium cation.The reaction kinetics are first order in 1 or 3 and first order in hydroxide ion.Bronsted-type plots of the second-order rate constants (kOH) as a function of the basicity (as pKBH) of the corresponding substituted pyridine are nonlinear for each of 1 and 3 and can be interpreted in terms of E1cb reaction mechanism.For 1, the Bronsted-type plot displays two distinct ''concave down'' linear regions; rate-determining deprotonation for pKBH > 5.16 (slope = -0.30), and a change in rate-determining step to bromide ion departure for pKBH > 5.16 (slope -0.58).For 3, the Bronsted-type plot appears to be smoothly curved for symmetrically disubstituted bispyridinium dications, as a consequence of the multiple substituent effects upon each step of the E1cb reactions of these dications.However, log kOH for 3 is a smooth linear function of the previously reported log kOH for the E1cb reactions of N-(2-cyanoethyl) pyridinium cations over a range in which a change in rate-determining step has been directly demonstrated for these latter cations.Thus a change in rate-determining step as a function of pyridine basicity is also required within the E1cb mechanism for 3.The E1cb reactions of 1 are approximately 104-fold faster than the corresponding hydroxide ion catalyzed E2 eliminations from 2-phenylethyl bromides that are isoelectronic with 1.