The kinetics and mechanism of cyclodimerization of alkylthiopropenals

…, LG Stepanova, GI Sarapulova, AV Vashchenko…

Index: Keiko; Stepanova; Sarapulova; Vashchenko; Larina; Funtikova; Voronkov Russian Chemical Bulletin, 2000 , vol. 49, # 12 p. 1977 - 1980

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Abstract

Abstract The kinetics of 2-alkylthiopropenals cyclodimerization was studied in the temperature range from-7 to+ 42° C in heptane and at 20° C in various solvents. The rate constants for cyclodimerization of 2-alkylthiopropenals are four orders of magnitude higher than those for dimerization of the oxygen-containing analogs, 2-alkoxypropenals, and are independent of the solvent polarity and substituent steric constant. The activation ...