HCID 18755519, compound → HCID 18755516, compound

Participants

Reaction Steps

1.0 g (5.4 mmol) of the 5-methyl-5-methylsulfanylbicyclo[4.1.0]heptane-2,4-dione isomers II is hydrogenated for 90 minutes under atmospheric pressure in 15 ml of methanol in the presence of 5 g Raney nickel. The mixture is concentrated and purified over silica gel (mobile phase ethyl acetatelhexane 1:1), and 4-methylcyclohept-4-ene-1,3-dione, 1H-NMR (CDCl3): 6.84, m, CH, 3.94, s, CH2, 2.77, m, CH2, 2,59, m, CH2, 1.88 ppm, s, CH3, is obtained as an oil.

Provenance & Evidence