Mechanism of reactions of unsaturated ethers and thioethers II: Dipole moment and charge shift in acetylenic ethers
โ Scribed by W. Drenth; G. L. Hekkert; B. G. Zwanenburg
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 383 KB
- Volume
- 79
- Category
- Article
- ISSN
- 0165-0513
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## Abstract The acid catalyzed addition of water to ethylthioethyne has been studied in aqueous solution. The reaction is general acid catalyzed and it is faster in H~2~O than in D~2~O. Substitution of a tertiary butyl group for the ethyl group results in a rate enhancement. The entropies of activa
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## Abstract Additional evidence for the occurrence of a rate determining proton transfer in the hydration of 1โalkynyl ethers is afforded by the value of the solvent deuterium isotope effect, k/k = 1.7. The addition of water to 1โethoxyโ1โpropyne was investigated in a series of alcoholโwater mixtu
## Abstract As in the formation of esters from alkyl ethynyl ethers with primary alkyl groups by addition of water, isopropyl and __tert__.โbutyl acetate are produced from isopropoxyโ and __tert__.โbutoxyethyne. In addition, the latter ethers show formation of an acidic product and an olefin. A me