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Reactions de substitution des sels d'alkoxy-4 pyridinium

✍ Scribed by M. Julia; H. Langhals; B. Mansour; D. Mansuy; P. Mattei

Book ID
104225712
Publisher
Elsevier Science
Year
1976
Tongue
French
Weight
202 KB
Volume
17
Category
Article
ISSN
0040-4039

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✍ Jean-Jacques Delpuech; Guy Serratrice 📂 Article 📅 1972 🏛 John Wiley and Sons 🌐 English ⚖ 676 KB

The deprotonation rate 1/7 of the title compounds, [4 -R -Py HI+, where R = NHz, t-Bu, Me, C1, Br or CN, is measured using the coalescence of the pyridinic u-protons, in a mixture CF,COOH/H,O/HClO, of variable acidity Ho, at 38°C. 1/7 is a linear function k/ho of the acidity l/ho. k isapproximately