2-methyl-2,3-dihydro-1-benzofuran-5-carbaldehyde

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a magnetically stirred solution of 680 mg (4.14 mmole) 5-hydroxymethyl-2-methyl-2,3-dihydrobenzofuran in 100 ml methylene dichloride was added 5.44 g manganese dioxide in one portion and the mixture stirred at room temperature overnight or until the reaction was complete as evidenced by thin-layer chromatography. The mixture was then filtered and the solvent evaporated to provide the title compound in quantitative yield. 1H-NMR(CDCl3)ppm(delta): 1.6 (d, 3H), 2.7-3.6 (m, 1H), 5.1 (m, 2H), 6.8 (d, 1H), 7.6 (m, 2H), 9.8 (s, 1H). The mixture was then filtered the solvent evaporated

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a magnetically stirred solution of 680 mg (4.14 mmole) 5-hydroxymethyl-2-methyl-2,3-dihydrobenzofuran in 100 ml methylene dichloride was added 5.44 g manganese dioxide in one portion and the mixture stirred at room temperature overnight or until the reaction was complete as evidenced by thin-layer chromatography. The mixture was then filtered and the solvent evaporated to provide the title compound in quantitative yield. 1H-NMR(CDCl3)ppm(delta): 1.6 (d, 3H), 2.7-3.6 (m, 1H), 5.1 (m, 2H), 6.8 (d, 1H), 7.6 (m, 2H), 9.8 (s, 1H). The mixture was then filtered the solvent evaporated

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a magnetically stirred solution of 680 mg (4.14 mmole) 5-hydroxymethyl-2-methyl-2,3-dihydrobenzofuran in 100 ml methylene dichloride was added 5.44 g manganese dioxide in one portion and the mixture stirred at room temperature overnight or until the reaction was complete as evidenced by thin-layer chromatography. The mixture was then filtered and the solvent evaporated to provide the title compound in quantitative yield. 1H-NMR(CDCl3)ppm(delta): 1.6 (d, 3H), 2.7-3.6 (m, 1H), 5.1 (m, 2H), 6.8 (d, 1H), 7.6 (m, 2H), 9.8 (s, 1H). The mixture was then filtered the solvent evaporated

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a magnetically stirred solution of 680 mg (4.14 mmole) 5-hydroxymethyl-2-methyl-2,3-dihydrobenzofuran in 100 ml methylene dichloride was added 5.44 g manganese dioxide in one portion and the mixture stirred at room temperature overnight or until the reaction was complete as evidenced by thin-layer chromatography. The mixture was then filtered and the solvent evaporated to provide the title compound in quantitative yield. 1H-NMR(CDCl3)ppm(delta): 1.6 (d, 3H), 2.7-3.6 (m, 1H), 5.1 (m, 2H), 6.8 (d, 1H), 7.6 (m, 2H), 9.8 (s, 1H). The mixture was then filtered the solvent evaporated