2,3-DIHYDRO-1H-PHENANTHREN-4-ONE

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

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

Procedure: To 300 ml of methane-sulfonic acid contained in a 1 liter, 3-neck flask equipped with thermometer, drying tube and magnetic stirring bar was added 82.0 g (0.38 mole) of γ-(2-naphthyl)butyric acid as prepared above and the reaction mixture was heated at 90°-95° C. for one hour with vigorous stirring. The yellow reaction mixture was cooled, poured on crushed ice and extracted with two 350 ml portions of ethyl acetate. The combined organic portions were washed with 5% aqueous sodium hydroxide, water, dried over anhydrous sodium sulfate and then treated with some silica gel powder and Norit A charcoal before filtering. Upon removing the solvent an off-white solid was obtained. Recrystallization from 375 ml of hexane containing 7-10 ml of chloroform gave an oil that solidified to yield 55.0 g (73.3% by weight) of 1,2,3,4-tetrahydro-4-phenanthrone as an off-white solid. M.P. 64°-66° C.; λmax 312 nm (7,510) ethanol; T.L.C. CH2Cl2. Rf =.7. equipped with thermometer drying tube and magnetic stirring bar as prepared above and the reaction mixture was heated at 90°-95° C. for one hour with vigorous stirring The yellow reaction mixture was cooled poured on crushed ice extracted with two 350 ml portions of ethyl acetate The combined organic portions were washed with 5% aqueous sodium hydroxide, water dried over anhydrous sodium sulfate treated with some silica gel powder and Norit A charcoal before filtering Upon removing the solvent an off-white solid was obtained Recrystallization from 375 ml of hexane containing 7-10 ml of chloroform gave an oil that

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

Procedure: To 300 ml of methane-sulfonic acid contained in a 1 liter, 3-neck flask equipped with thermometer, drying tube and magnetic stirring bar was added 82.0 g (0.38 mole) of γ-(2-naphthyl)butyric acid as prepared above and the reaction mixture was heated at 90°-95° C. for one hour with vigorous stirring. The yellow reaction mixture was cooled, poured on crushed ice and extracted with two 350 ml portions of ethyl acetate. The combined organic portions were washed with 5% aqueous sodium hydroxide, water, dried over anhydrous sodium sulfate and then treated with some silica gel powder and Norit A charcoal before filtering. Upon removing the solvent an off-white solid was obtained. Recrystallization from 375 ml of hexane containing 7-10 ml of chloroform gave an oil that solidified to yield 55.0 g (73.3% by weight) of 1,2,3,4-tetrahydro-4-phenanthrone as an off-white solid. M.P. 64°-66° C.; λmax 312 nm (7,510) ethanol; T.L.C. CH2Cl2. R f =.7. equipped with thermometer drying tube and magnetic stirring bar as prepared above and the reaction mixture was heated at 90°-95° C. for one hour with vigorous stirring The yellow reaction mixture was cooled poured on crushed ice extracted with two 350 ml portions of ethyl acetate The combined organic portions were washed with 5% aqueous sodium hydroxide, water dried over anhydrous sodium sulfate treated with some silica gel powder and Norit A charcoal before filtering Upon removing the solvent an off-white solid was obtained Recrystallization from 375 ml of hexane containing 7-10 ml of chloroform gave an oil that

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

Procedure: To 300 ml of methane-sulfonic acid contained in a 1 liter, 3-neck flask equipped with thermometer, drying tube and magnetic stirring bar was added 82.0 g (0.38 mole) of γ-(2-naphthyl)butyric acid as prepared above and the reaction mixture was heated at 90°-95° C. for one hour with vigorous stirring. The yellow reaction mixture was cooled, poured on crushed ice and extracted with two 350 ml portions of ethyl acetate. The combined organic portions were washed with 5% aqueous sodium hydroxide, water, dried over anhydrous sodium sulfate and then treated with some silica gel powder and Norit A charcoal before filtering. Upon removing the solvent an off-white solid was obtained. Recrystallization from 375 ml of hexane containing 7-10 ml of chloroform gave an oil that solidified to yield 55.0 g (73.3% by weight) of 1,2,3,4-tetrahydro-4-phenanthrone as an off-white solid. M.P. 64°-66° C.; λmax 312 nm (7,510) ethanol; T.L.C. CH2Cl2. Rf =.7. equipped with thermometer drying tube and magnetic stirring bar as prepared above and the reaction mixture was heated at 90°-95° C. for one hour with vigorous stirring The yellow reaction mixture was cooled poured on crushed ice extracted with two 350 ml portions of ethyl acetate The combined organic portions were washed with 5% aqueous sodium hydroxide, water dried over anhydrous sodium sulfate treated with some silica gel powder and Norit A charcoal before filtering Upon removing the solvent an off-white solid was obtained Recrystallization from 375 ml of hexane containing 7-10 ml of chloroform gave an oil that

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

Procedure: To 300 ml of methane-sulfonic acid contained in a 1 liter, 3-neck flask equipped with thermometer, drying tube and magnetic stirring bar was added 82.0 g (0.38 mole) of γ-(2-naphthyl)butyric acid as prepared above and the reaction mixture was heated at 90°-95° C. for one hour with vigorous stirring. The yellow reaction mixture was cooled, poured on crushed ice and extracted with two 350 ml portions of ethyl acetate. The combined organic portions were washed with 5% aqueous sodium hydroxide, water, dried over anhydrous sodium sulfate and then treated with some silica gel powder and Norit A charcoal before filtering. Upon removing the solvent an off-white solid was obtained. Recrystallization from 375 ml of hexane containing 7-10 ml of chloroform gave an oil that solidified to yield 55.0 g (73.3% by weight) of 1,2,3,4-tetrahydro-4-phenanthrone as an off-white solid. M.P. 64°-66° C.; λmax 312 nm (7,510) ethanol; T.L.C. CH2Cl2. Rf =.7. equipped with thermometer drying tube and magnetic stirring bar as prepared above and the reaction mixture was heated at 90°-95° C. for one hour with vigorous stirring The yellow reaction mixture was cooled poured on crushed ice extracted with two 350 ml portions of ethyl acetate The combined organic portions were washed with 5% aqueous sodium hydroxide, water dried over anhydrous sodium sulfate treated with some silica gel powder and Norit A charcoal before filtering Upon removing the solvent an off-white solid was obtained Recrystallization from 375 ml of hexane containing 7-10 ml of chloroform gave an oil that

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

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

Procedure: A solution of potassium hydroxide (0.25 g) in methanol (5 ml) was added to a solution of 1,2-dihydro-4(3H)-phenanthrenone (0.5 g) and 5-methyl-1-(triphenylmethyl)-1H-imidazole-4-carboxaldehyde (0.9 g) in methanol (20 ml). The mixture was kept at 23° for 5 days after which time a solid had separated. This was filtered off, washed with ethanol and purified by FCC eluting firstly with hexane/dichloromethane (1:1) and then with dichloromethane to give the title compound (0.86 g), m.p. 145°-148° (decomp.). after which time a solid had separated This was filtered off washed with ethanol purified by FCC eluting firstly with hexane/dichloromethane (1:1)

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

Procedure: To 300 ml of methane-sulfonic acid contained in a 1 liter, 3-neck flask equipped with thermometer, drying tube and magnetic stirring bar was added 82.0 g (0.38 mole) of γ-(2-naphthyl)butyric acid as prepared above and the reaction mixture was heated at 90°-95° C. for one hour with vigorous stirring. The yellow reaction mixture was cooled, poured on crushed ice and extracted with two 350 ml portions of ethyl acetate. The combined organic portions were washed with 5% aqueous sodium hydroxide, water, dried over anhydrous sodium sulfate and then treated with some silica gel powder and Norit A charcoal before filtering. Upon removing the solvent an off-white solid was obtained. Recrystallization from 375 ml of hexane containing 7-10 ml of chloroform gave an oil that solidified to yield 55.0 g (73.3% by weight) of 1,2,3,4-tetrahydro-4-phenanthrone as an off-white solid. M.P. 64°-66° C.; λmax 312 nm (7,510) ethanol; T.L.C. CH2Cl2. R f =.7. equipped with thermometer drying tube and magnetic stirring bar as prepared above and the reaction mixture was heated at 90°-95° C. for one hour with vigorous stirring The yellow reaction mixture was cooled poured on crushed ice extracted with two 350 ml portions of ethyl acetate The combined organic portions were washed with 5% aqueous sodium hydroxide, water dried over anhydrous sodium sulfate treated with some silica gel powder and Norit A charcoal before filtering Upon removing the solvent an off-white solid was obtained Recrystallization from 375 ml of hexane containing 7-10 ml of chloroform gave an oil that

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

Procedure: To 300 ml of methane-sulfonic acid contained in a 1 liter, 3-neck flask equipped with thermometer, drying tube and magnetic stirring bar was added 82.0 g (0.38 mole) of γ-(2-naphthyl)butyric acid as prepared above and the reaction mixture was heated at 90°-95° C. for one hour with vigorous stirring. The yellow reaction mixture was cooled, poured on crushed ice and extracted with two 350 ml portions of ethyl acetate. The combined organic portions were washed with 5% aqueous sodium hydroxide, water, dried over anhydrous sodium sulfate and then treated with some silica gel powder and Norit A charcoal before filtering. Upon removing the solvent an off-white solid was obtained. Recrystallization from 375 ml of hexane containing 7-10 ml of chloroform gave an oil that solidified to yield 55.0 g (73.3% by weight) of 1,2,3,4-tetrahydro-4-phenanthrone as an off-white solid. M.P. 64°-66° C.; λmax 312 nm (7,510) ethanol; T.L.C. CH2Cl2. Rf =.7. equipped with thermometer drying tube and magnetic stirring bar as prepared above and the reaction mixture was heated at 90°-95° C. for one hour with vigorous stirring The yellow reaction mixture was cooled poured on crushed ice extracted with two 350 ml portions of ethyl acetate The combined organic portions were washed with 5% aqueous sodium hydroxide, water dried over anhydrous sodium sulfate treated with some silica gel powder and Norit A charcoal before filtering Upon removing the solvent an off-white solid was obtained Recrystallization from 375 ml of hexane containing 7-10 ml of chloroform gave an oil that