Water → HCID 53702315, compound

Participants

Reaction Conditions

Reaction Steps

5.0 g (43 mmol) of potassium tert-butoxide dissolved in 50 ml of tetrahydrofuran was added to the solution of 8.7 g (40 mmol) of 3-methyl-5-(1,2,2-trimethylbicyclo-[3.1.0]hex-3-yl)pent-3-en-2-one in 50 ml of the same solvent at −40° C. After 5 minutes of stirring at −35° C. 7.0 g (45 mmol) of methyl iodide was added rapidly and stirring continued at −20° C. for 10 minutes. The reaction mixture was poured on 200 ml of water and worked up as usual. Flash chromatography of the crude product (silica gel; eluent: hexane/MTBE 9:1) followed by Kugelrohr distillation at 150° C./0.1 Torr gave 7.3 g (78% yield) of 3,3-dimethyl-5-(1,2,2-trimethylbicyclo[3.1.0]hex-3-yl)pent-4-en-2-one.

Provenance & Evidence