Hydrochloric Acid → HCID 58046560, compound

Participants

Reaction Steps

8-[trans-3-(4-Chlorophenyl)allyl]-1,4-dioxa-8-azaspiro[4.5]decane (1.38 g) was dissolved in methanol (40 ml) and 6 N hydrochloric acid (120 ml) was added. The mixture was heated to reflux for 4 h. The mixture cooled and was basified to pH 14 with solid sodium hydroxide pellets (CARE! Exotherm), the solution becoming opaque. The aqueous was extracted three times with ether. The organics were washed with brine, dried over anhydrous MgSO4 and evaporated to give 1.17 g (100%) of the desired ketone 1H NMR (400 MHz, CDCl3) 2.38 (m, 4H), 2.70 (m, 4H), 3.15 (d, J=5 Hz, 2H), 3.96 (s, 4H), 6.17 (dt, J=12 & 5 Hz, 1H), 6.40 (d, J=12 Hz, 1H), 7.20 (m, 4H). MS (ES+) 250/252 M+H+.

Provenance & Evidence