tricyclo[9.4.0.03,8]pentadeca-1(15),3,5,7,11,13-hexaen-2-one

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A mixture of magnesium turnings (1.07 g, 0.044 mol) activated with iodine, 1,2-dibromoethane and tetrahydrofuran (40 ml) was kept under a nitrogen atmosphere, and a solution of 4-bromophenylmethyl tetrahydro-2-pyranyl ether (11.20 g, 0.041 mol) in tetrahydrofuran (40 ml) was added dropwise under stirring. The mixture was gently heated to reflux temperature, and heating was continued for 3 h. The mixture was cooled to room temperature, and a solution of 10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5-one (6.86 g, 0.033 mol) in tetrahydrofuran (40 ml) was added dropwise. The mixture was heated at reflux temperature for 1 h, cooled and then poured into an ice-cold saturated solution of ammonium chloride (85 ml). The mixture was extracted with ether (120 ml and 2×70 ml), and the combined organic layers were washed with water (2×40 ml), brine (40 ml) and dried (MgSO4). The solvent was removed in vacuo and the oily residue (14.7 g) was purified by column chromatography on silica gel (200 g) using first benzene and then a mixture of dichloromethane and ethanol (9:1) as eluents. The dichloromethane/ethanol fraction afforded 5.5 g (41%) of 5-(4-(2-tetrahydropyranyloxymethyl)phenyl)-10,11-dihydro-5H-dibenzo[a,d]-cyclohepten-5-ol. The mixture was gently heated to reflux temperature heating The mixture was heated at reflux temperature for 1 h cooled The mixture was extracted with ether (120 ml and 2×70 ml) the combined organic layers were washed with water (2×40 ml), brine (40 ml) dried (MgSO4) The solvent was removed in vacuo the oily residue (14.7 g) was purified by column chromatography on silica gel (200 g) a mixture of dichloromethane and ethanol (9:1) as eluents

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A solution of cyclopropylmagnesium bromide in dry THF (prepared from cyclopropylbromide (12.1 g, 0.10 mol), magnesium turnings (2.45 g, 0.10 mol) and dry THF (65 ml)) was placed under an atmosphere of nitrogen. A solution of 10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5-one (10.4 g, 0.05 mol) in dry THF (25 ml) was added dropwise and when addition was complete the mixture was heated at reflux for 30 minutes. The reaction mixture was cooled on an ice-bath and saturated ammonium chloride (50 ml) was carefully added. The mixture was neutralized with 2N hydrochloric acid and extracted with diethyl ether (2×200 ml). The combined organic extracts were dried (Na2SO4) and the solvent was evaporated in vacuo to give 13.1 g of crude 5-cyclopropyl-10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5-ol. when addition was heated at reflux for 30 minutes The reaction mixture was cooled on an ice-bath extracted with diethyl ether (2×200 ml) The combined organic extracts were dried (Na2SO4) the solvent was evaporated in vacuo

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 5 g of 10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5-one and 20 g of cyclopropylamine in 25 ml of hexamethylphosphoramide is added, with cooling, during 30 minutes, a solution of 1.7 ml of titanium tetrachloride in 10 ml of anhydrous benzene. After stirring at room temperature for 2 weeks, benzene (50 ml) and water (50 ml) are added, with cooling. The mixture is filtered, the layers of the filtrate are separated, and the aqueous phase is extracted with 50 ml of benzene. The combined aqueous phases are washed with 5% aqueous sodium bicarbonate solution (25ml) and water (3 × 25 ml) and dried with magnesium sulfate. The solvent is removed, and the residue is shortpath distilled at a bath temperature of 145°-150° (0.3 micron) to give N-cyclopropyl-10,11-dihydro-5H-dibenzo-[a,d]cyclohepten-5-imine as a solid. Nmr spectrum (in CDCl3): multiplets at τ 2.3-3.0 (8H) 6.6-7.2 (5H) and 8.2-9.4 (4H). with cooling, during 30 minutes with cooling The mixture is filtered the layers of the filtrate are separated the aqueous phase is extracted with 50 ml of benzene The combined aqueous phases are washed with 5% aqueous sodium bicarbonate solution (25ml) and water (3 × 25 ml) dried with magnesium sulfate The solvent is removed the residue is shortpath distilled at a bath temperature of 145°-150° (0.3 micron)

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A solution of 52.5 g of titanium tetrachloride in 300 ml of anhydrous benzene is added slowly, under nitrogen, to a stirred, cooled (ice-bath) mixture of 100 g of 10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5-one, 103 g of methylamine and 1200 ml of anhydrous benzene. After stirring at room temperature for 12 days the mixture is cooled, treated with concentrated aqueous sodium bicarbonate solution and filtered through Celite. The layers of the filtrate are separated, and the benzene layer is dried with magnesium sulfate. Removal of the solvent and crystallization of the residue from 200 ml of hexane gives 95.6 g (88% yield) of N-methyl-10,11-dihydro5H-dibenzo[a,d]cyclohepten-5-imine, mp 89°-90°. An analytical sample (hexane) also had mp 89°-90°. Nmr spectrum (in CDCl3): multiplets at τ 2.3-3.2 (8H) and 6.8-7.2 (4H) and singlet at 6.7 (3H). cooled is cooled filtered through Celite The layers of the filtrate are separated the benzene layer is dried with magnesium sulfate Removal of the solvent and crystallization of the residue from 200 ml of hexane

反応条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: In a three neck round bottom flask equipped with stirrer, (0.243 g, 0.009 mol) of magnesium turnings and 2.5 mL of dry THF was added. The reaction was stirred to allow the metal to dissolve. At this point the temperature was raised to 60° C. and cyclopropyl bromide (1.21 g, 0.010 mol) was added dropwise. The reaction mixture was allowed to reflux for 1.5 h at 70° C. and then lowered to 60° C. Then (1.04 g, 0.005 mol) of 10,11-dihydro-dibenzo[a,d]cyclohepten-5-one was added dropwise. Upon addition, the solution turned purple in color. The temperature was raised to 70° C. after addition was complete. The reaction refluxed for an additional 2 h and HPLC was used to monitor reaction progress. Ammonium chloride/H2O (7.5 mL) was added to quench the reaction and the flask placed in an ice bath. The resulting solution was filtered and the filtrate was transferred to a 250-mL separatory funnel charged with DCM (100 mL). Then finally NaCl/H2O solution (80 mL) was added. The organic phase was removed and dried over Na2SO4 for 2 h. The solvent was removed under reduced pressure and the product was dried under vacuum overnight. 1H NMR and LC/MS confirmed the product. (Yield ˜52%). In a three neck round bottom flask equipped with stirrer to dissolve to reflux for 1.5 h at 70° C. lowered to 60° C Upon addition The temperature was raised to 70° C. after addition The reaction refluxed for an additional 2 h reaction progress to quench the reaction the flask placed in an ice bath The resulting solution was filtered the filtrate was transferred to a 250-mL separatory funnel charged with DCM (100 mL) Then finally NaCl/H2O solution (80 mL) was added The organic phase was removed dried over Na2SO4 for 2 h The solvent was removed under reduced pressure the product was dried under vacuum overnight

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A solution of chloromethyl methyl ether (40.2 g, 0.5 mole, freshly distilled) in dry tetrahydrofuran (80 ml) is prepared, and about 5 ml of that solution are added to a stirred mixture of magnesium turnings (12.0 g, 0.5 g - atom) and mercuric chloride (500 mg) in tetrahydrofuran (20 ml) until an exothermic reaction ensues. The flask is cooled to 0° ± 10° and the remainder of the chloromethyl methyl ether solution is added dropwise with thorough agitation. After completion of addition a solution of 10,11-dihydro-5H- dibenzo[a,b]cyclohepten-5-one (56.1 g 0.25 mole) in tetrahydrofuran is added dropwise. The reaction mixture is stirred overnight at room temperature and the complex is hydrolyzed with ice-cold ammonium chloride solution. The aqueous layer is extracted with ether (3 × 100 ml) and the combined extracts are washed with sodium chloride solution, dried and evaporated under reduced pressure to give 10,11-dihydro-5-methoxymethyl-5H-dibenzo[a,d]cyclohepten- 5-ol as an oil with b.p. 143° -144° C/0.05 mm, γmaxfilm : 3500 cm-1, 2820 cm-1. A solution of chloromethyl methyl ether (40.2 g, 0.5 mole, freshly distilled) in dry tetrahydrofuran (80 ml) is prepared The flask is cooled to 0° ± 10° is added dropwise The aqueous layer is extracted with ether (3 × 100 ml) the combined extracts are washed with sodium chloride solution dried evaporated under reduced pressure