Continuous-Flow Preparation of γ-Butyrolactone Scaffolds, 2-(5,5-dimethyl-2-oxotetrahydrofuran-3- yl)acetic acid
(5,5-dimethyl-2-oxotetrahydrofuran-3-yl)acetic acid 2-(5,5-Dimethyl-2-oxotetrahydrofuran-3-yl)acetic acid 2-carboxymethyl-4-methyl-4-pentanolide, Cas 412298-86-3 2-(5,5-Dimethyl-2-oxotetrahydrofuran-3-yl)acetic acid (4a). 1H NMR (DMSO-d6, 400 MHz): δ = 3.20 – 3.10 (m, 1H), 2.62 (dd, J = 17.1, 4.4 Hz, 1H), 2.54 – 2.45 (m, 1H), 2.31 – 2.21 (m, 1H), 1.84 (t, J = 12.0 Hz, 1H), 1.39 (s, 3H), 1.33 (s, 3H) …