Methyl iodide → HCID 66746413, compound

Participants

Reaction Steps

To the stirred solution of 6-hydroxyspiro[chromene-2,1′-cyclobutan]-4-(3H)-one (8 g, 39.215 mmol) in dry dimethylformamide (150 ml), potassium carbonate (16.28 g, 117.64 mmol) and methyl iodide (4.88 ml, 78.431 mmol) were added and the reaction mixture was stirred at room temperature under nitrogen atmosphere for 2 h. After the completion of the reaction, the reaction mixture was diluted with water (100 ml), extracted with ethyl acetate (3×300 ml), the combined organic layers washed with water (3×100 ml), brine (60 ml), dried (Na2SO4), filtered and concentrated to yield 8.13 g of the product; 1H NMR (300 MHz, CDCl3) δ 1.67-1.77 (m, 1H), 1.85-1.97 (m, 1H), 2.11-2.18 (m, 2H), 2.23-2.34 (m, 2H), 2.87 (s, 2H), 3.77 (s, 3H), 6.88 (d, J=9.6 Hz, 1H), 7.06 (d, J=8.7 Hz, 1H), 7.25 (s, 1H).

Provenance & Evidence