Dipotassium Hydrogen Phosphate Catalyzed Synthesis of New Aryle Vinyl Ethers from 2-Hydroxybenzaldehyde Derivatives, Acetylenic Esters and Tributylphosphine
Publish place: The Regional Chemistry Conference
Publish Year: 1389
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
MIAUCHEMISTRY01_154
تاریخ نمایه سازی: 18 اسفند 1397
Abstract:
Protonation of the highly reactive 1:1 intermediates, produced in the reaction between tributylphosphine and alkyl acetylenecarboxylates by 2-hydroxybenzaldehyde derivatives leads to vinyltributylphosphonium salts, which undergo Michael addition reaction with conjugate base to produce corresponding phosphorus ylides. Dipotassium hydrogen phosphate powder was found to catalyze the conversion of phosphorus ylides to new electron poor (E, Z) aryl vinyl ethers in solvent free conditions under microwave (0.5 KW, 3 min) and thermal (90◦C, 60 min) conditions.
Authors
Vahid Azizkhani
Department of Chemistry, Faculty of Science, Zanjan University, Zanjan, Iran, P.O. Box ۴۵۱۹۵-۳۱۳
Ali Ramazani
Department of Chemistry, Faculty of Science, Zanjan University, Zanjan, Iran, P.O. Box ۴۵۱۹۵-۳۱۳
Morteza Rouhani
Department of Chemistry, Faculty of Science, Zanjan University, Zanjan, Iran, P.O. Box ۴۵۱۹۵-۳۱۳
Yadollah Bayat
Faculty of Material and Manufacturing Technologies, Malek Ashtar University of Technology