Bromochloromethane → 5,6-Methylenedioxy-1-tetralone

Participants

Reaction Conditions

Reaction Steps

To a solution of the product of Example 177 (30 g) in DMF (390 ml) was added cesium carbonate (83 g) followed by bromochloromethane (33 g) and the resulting mixture heated to 100° C. and mechanically stirred for 2 hours. The reaction was cooled, filtered and the solids washed with ethyl acetate. The filtrate concentrated and the residue taken up into water and toluene. The layers were separate and the aqueous layer reextracted with toluene. The extracts were combined, dried (MgSO4), filtered, treated with charcoal, refiltered and concentrated to provide 29.9 g of the desired product, m.p. 132°-136° C.

Provenance & Evidence