tert-BUTYL CHLORIDE → 2,2,4,4-Tetramethyl-3-pentanone Imine

Participants

Reaction Steps

This was prepared by the method of J. Chem. Soc., Perkin I, 2087 (1976); ibid, 1797 (1974). Pivalonitrile (33.2 g.) and t-butyl chloride (44.4 g.) were added under nitrogen to a well stirred suspension of sodium sand (18.4 g.) in a mixture of hexane (80 ml.), tetrahydrofuran (20 ml.) and methanol (1 ml.) over one hour at 15°-20° C. The mixture was stirred three hours, a solution of chlorobenzene (2 g.) in tetrahydrofuran (5 ml.) added dropwise over 10 minutes and stirring continued for one hour. Methanol (20 ml.) was added with caution over 0.5 hr. followed by water until phases separated. The aqueous phase was extracted with ether and the combined organic phases dried and evaporated in vacuo. The residue was distilled to afford di-t-butylketone imine, b.p. 62°-63° C./19 mm.

Provenance & Evidence