Dichloromethane → HCID 57031902, compound

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Reaction Steps

To a mixture of commercial bleach (28.5 ml of a 5.25% solution of sodium hypochlorite), α-ionone (3.84 g), and methylene chloride (330 ml) was added a solution of potassium phosphate (monobasic) (5.44 g) in water (40 ml) during a 30 minute period. The mixture was stirred for 30 minutes at 25°, the methylene chloride solution washed with sodium bicarbonate solution and evaporated to give 4.1 g of crude product. Purification by column chromatography gave 2.35 g of 4-(5-chloro-6-methylene-2,2-dimethylcyclohexyl)-3-buten-2-one. NMR (CDCl3) δ0.90 and 0.93 (6H, 2s, >C(CH3)2), 0.9-2.1 (4H, m), 2.27 (3H, s, --COCH3), 2.53 and 2.71 (1H, 2s, >CH--CH=CH--), 4.35-4.68 (1H, m, >CHCl), 4.70, 4.83, 5.15 and 5.33 (2H, 4s, >C=CH2), 5.9-6.4 (1H, m, --CH=CH--CO--), 6.7-7.3 (1H, --CH=CH--COCH3). IR (film) νmax 2960, 1695, 1675, 1630, 1450, 1430 cm -1. MS m/e 191, 149.

Provenance & Evidence