Chloride → 2,2,4,4-Tetramethyl-3-pentanone Imine

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.

1. customThis was prepared by the method of J
2. stirringThe mixture was stirred three hours
3. stirringstirring
4. customseparated
5. extractionThe aqueous phase was extracted with ether
6. customthe combined organic phases dried
7. customevaporated in vacuo
8. distillationThe residue was distilled

ORD-Eintrag

ord-1354517a48fc4290bff5d95ab29fc968

Quelldatensatz

uspto-grants-1989_02

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US04804782