3-Bromopropionic acid → 3-(4-Bromothiophenoxy)propionic acid

Participants

Reaction Conditions

Reaction Steps

8.5 g (0.211 mol) of sodium hydroxide was added to 45 mL of water, 20.0 g (0.106 mol) of 4-bromothiophenol (purchased from Aldrich Chemical Company) was then added and the mixture was cooled to about 0° C. 18.0 g (0.116 mol) of 3-bromopropionic acid (purchased from Aldrich Chemical Company) was added in portions while keeping the temperature below 5° C. The mixture was warmed to room temperature, stirred for 1 h under nitrogen, and was then washed with diethyl ether (3×100 mL). The aqueous layer was acidified with 1N HCl, and then filtered to yield 27.95 g of the title compound of Step A as a solid melting at 101-103° C. 1H NMR (CDCl3): δ2.66 (t,2H), 3.14 (t,2H), 7.2 (m,2H), 7.4 (m,2H).

Provenance & Evidence