Thionyl Chloride → 3-Azido-3-methylbutanoyl chloride

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of 3-azido-3-methylbutanoic acid (10 g, 69.8 mmol) in anhydrous 1,2-dichloroethane (50 mL) was added thionyl chloride (10.0 mL, 140 mmol). The flask was fitted with a condenser and the reaction was heated in a 50° C. oil bath for 2 hours. The reaction was concentrated to a brownish-black suspension. The residue was vacuum distilled through a short path distillation apparatus. The forerun was discarded and the major fraction distilled at 66° C. at 18 mbar as a pale yellow liquid (9.66 g, 59.7 mmol, 85.6%). 1H NMR (CDCl3, 400 MHz): δ 1.41 (s, 6H), 2.51 (s, 2H), 2.98 (s, 2H). 1H NMR (CDCl3, 400 MHz): δ 1.44 (s, 6H), 3.10 (s, 2H).

Provenance & Evidence