Title: Substituted Butanolides and Butenolides: XVII. Substituted 3-(Furan-2-ylmethylidene)furan-2(3H)-ones and 3-(Furan-2-ylmethylidene)dihydrofuran-2(3H)-ones.
Authors: Badovskaya, L. A.; Sorotskaya, L. N.; Kozhina, N. D.; Kaklyugina, T. Ya.
Abstract: A number of furan-2-ylmethylidene-substituted lactones were synthesized by condensation of 5-alkylfuran-2(3H)-ones and 4-alkyldihydrofuran-2(3H)-ones with 5-substituted furan-2-carbaldehydes. The reactivity of furan-2(3H)-ones was higher than that of furan-2(5H)-ones due to formation of intermediate conjugated anion. The condensation of 4-alkyldihydrofuran-2(3H)-ones with furan-2-carbaldehydes required more severe conditions than the condensation with furan-2(3H)-ones. The substituent in the furan ring affects the reaction time and yield.
Subjects: FURANS; CONDENSATION; BUTENOLIDES; ALDEHYDES; LACTONES
Publication: Russian Journal of Organic Chemistry, 2018, Vol 54, Issue 7, p1031
ISSN: 1070-4280
Publication type: Academic Journal
DOI: 10.1134/S1070428018070102

Substituted Butanolides and Butenolides: XVII. Substituted 3-(Furan-2-ylmethylidene)furan-2(3H)-ones and 3-(Furan-2-ylmethylidene)dihydrofuran-2(3H)-ones.

Badovskaya, L. A.; Sorotskaya, L. N.; Kozhina, N. D.; Kaklyugina, T. Ya.