4-(methoxymethoxy)-2,3-dihydroinden-1-one

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

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

Procedure: To a solution of 1.00 g of 4-(methoxymethoxy)-1-indanone in 10 ml of ethanol, 2.8 ml of 40% methylamine (methanol solution) and 367 mg of sodium cyanoborohydride were added. While stirring at room temperature, 0.55 ml of acetic acid was added dropwise and the mixture was heated at reflux for 4 hours. The reaction solution was air-cooled, combined with water and then extracted with ethyl acetate. After drying over anhydrous magnesium sulfate, the solvent was evaporated. The residue was purified by silica gel column chromatography to obtain 0.61 g of the desired compound as a deep green oily substance. the mixture was heated at reflux for 4 hours The reaction solution was air-cooled extracted with ethyl acetate After drying over anhydrous magnesium sulfate the solvent was evaporated The residue was purified by silica gel column chromatography

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

Procedure: To a solution of 4.12 g of 4-hydroxy-1-indanone and 7.3 ml of N-ethyldiisopropylamine in 30 m of dichloromethane, 2.3 ml of chloromethyl methyl ether was added dropwise while stirring under ice cooling. An ice bath was removed and the mixture was continuously stirred overnight. The reaction solution was diluted with diethyl ether, washed with water, an aqueous 10% citric acid solution and an aqueous 5% sodium hydroxide solution, and then dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure to obtain 4.23 g of the desired compound as a pale orange crystal having a melting point of 51 to 54° C. An ice bath was removed The reaction solution was diluted with diethyl ether washed with water an aqueous 10% citric acid solution and an aqueous 5% sodium hydroxide solution, and then dried over anhydrous magnesium sulfate The solvent was evaporated under reduced pressure