<b>Vinyltriphenylphosphonium salt-mediated preparation of thiophene-containing electron-poor alkenes from acetylenic esters, 2-thienylmethanol and triphenylphosphine</b>
نویسندگان
چکیده
منابع مشابه
AMild Method for the Preparation of g-Hydroxy- a,b-Acetylenic Esters**
The alkynylation of a carbonyl compound is a powerful reaction for forming a carbon–carbon s bond. Highly functionalized g-hydroxy-a,b-acetylenic esters RCH(OH)C C CO2Me (A) are promising synthetic intermediates that can be used as precursors to a variety of complex molecules. Since the procedure was reported by Midland et al., alcohols A have mainly been prepared by the treatment of aldehydes ...
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Flavonoids comprise a group of plant polyphenols with a broad spectrum of biological activities. They have been shown to exert beneficial effects on human health and play an important role in prevention and/or treatment of several serious diseases, such as cancer, inflammation and cardiovascular disease (Middleton et al., 2000; Rice-Evans, 2001). Flavonoids are important beneficial components o...
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The adducts produced in the reaction between trialkyl phosphites and acetylenic esters were trapped by hydantoins to produce highly functionalized dialkyl 2-(2,5-dioxo-4,4-diphenylimidazolidin-1-yl) succinate in good yields.
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A range of heterocycles, namely thiazoles, imidazoles, imidazopyridines, thiazolidines and dimethoxyindoles, have been synthesised directly from alkenes via a two-step ketoidoination/cyclisation protocol. The alkene starting materials are themselves readily accessible using many different and well-established approaches, and allow access to a variety of heterocycles with excellent yields and re...
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In this paper, a novel phenyl-thiophene-2-carbaldehyde compound-based flexible substrate material has been presented. Optical and microwave characterization of the proposed material are done to confirm the applicability of the proposed material as a substrate. The results obtained in this work show that the phenyl-thiophene-2-carbaldehyde consists of a dielectric constant of 3.03, loss tangent ...
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Ethiopia
سال: 2011
ISSN: 1011-3924
DOI: 10.4314/bcse.v25i1.63370