Reacción #65054
ord-f9be7422b2ee415887c599b10259adfe
Ecuación de reacción
Reactantes
Reactivos
Disolventes
Condiciones de reacción
Procedimiento
Two reactions were carried out in accordance with the process of the invention using valeraldehyde. For one reaction (Example VI) 3-acetyl-dihydro-2(3H)-furanone was used and for the second reaction (Example VII) 3-acetyl-5-n-butyldihydro-2(3H)-furanone was employed. Both reactions used sodium hydroxide with toluene as the diluent and the reactants were present in essentially equimolar amounts. 3-Pentylidene-dihydro-2(3H)-furanone (86°-104° C. at 0.1 mm/Hg) and 3-pentylidene-5-n-butyldihydro-2(3H)-furanone (110°-131° C. at 0.01 mm/Hg) were obtained from the respective reactions. Proton nuclear magnetic resonance spectra for the products were as follows: 3-Pentylidene-dihydro-2(3H)-furanone: 1HNMR (CDCl3) δ6.7 (m, 0.93H), 6.26 (m, 0.07H), 4.4 (t, 2H), 2.9 (m, 2H) 2.22 (m, 2H), 1.4 (m, 4H), 0.9 (t, 3H). 3-Pentylidene-5-n-butyldihydro-2(3H)-furanone: 1HNMR (CDCl3) δ6.7 (tt, 0.4H), 6.2 (tt, 0.6H), 4.45 (m, 1H) 3.1-1.5 complex multiplets, 14H), 0.9 (two superimposed triplets, 6H).