Lithium Hydroxide → ({[5,5-Dimethyl-2-(4-methylphenyl)-1,3-dioxan-2-yl]methyl}thio)acetic acid

Participants

Reaction Conditions

Reaction Steps

Ethyl ({[5,5-dimethyl-2-(4-methylphenyl)-1,3-dioxan-2-yl]methyl}thio)acetate (10.1 g, 29.8 mmol) was dissolved in THF (150 ml) and cooled to 0° C. LiOH (3.76 g, 89.5 mmol) in water (50 ml) was added and the mixture was stirred for two hours at room temperature. The mixture was concentrated under reduced pressure. Water was added and the mixture was extracted with diethyl ether. The aqueous layer was acidified using 2M HCl to pH 3 and extracted twice with CH2Cl2. The combined CH2Cl2 layers were dried (Na2SO4) and concentrated under reduced pressure to afford 8.7 g (94%) of the title compound as a white solid. 1H-NMR(CDCl3, 200 MHz): δ 0.6 (s, 3H), 1.2 (s, 3H), 2.4 (s, 3H), 3.0 (s, 2H), 3.4 (s, 2H), 3.4 (s, 4H), 7.2-7.4 (m. 4H).

Provenance & Evidence