Induction periods in the polymerization of lactams initiated with carboxylic acids in an anhydrous medium

Mechanism of recyclization of furans to

Mechanism of recyclization of furans to thiophenes and selenophenes under acid-catalysis conditions. 2. Kinetic investigations of the reaction of 2,5-dialkylfurans with hydrogen sulfide and hydrogen selenide in an anhydrous medium

✍ S. P. Voronin; T. I. Gubina; S. A. Trushin; I. A. Markushina; V. G. Kharchenko 📂 Article 📅 1989 🏛 Springer US 🌐 English ⚖ 395 KB

The effect of the concentration of the acidic component on the rates of recyclization of 2,5-dialkylfurans to thiophenes and selenophenes was studied. On the basis of the direct correlation of log k on (Ho)l and the isotope effect of the solvent it was established that the reaction proceeds via a me