1-(2-bromoethyl)-2-(bromomethyl)benzene

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: Triethylamine (10.0 ml) was added to a solution of 1-bromomethyl-2-(2-bromoethyl)benzene (10 g) and 2-hydrazinopyridine (3.9 g) in dimethylformamide (250 ml), and the mixture was stirred, under nitrogen, at ambient temperature for about 20 mins. The reaction mixture was diluted with water and ethyl acetate. The organic layer was separated, washed with water and brine, dried over anhydrous sodium sulfate, filtered, and the filtrate was concentrated. The residue was triturated with ethyl acetate to afford 5.3 g (65%) of product. Recrystallization of the product from ethyl acetate gave the analytical sample, mp 116-117° C. The organic layer was separated washed with water and brine dried over anhydrous sodium sulfate filtered the filtrate was concentrated The residue was triturated with ethyl acetate

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

Procedure: Triethylamine (10.0 ml) was added to a solution of 1-bromomethyl-2-(2-bromoethyl)benzene (10 g) and 2-hydrazinopyridine (3.9 g) in dimethylformamide (250 ml), and the mixture was stirred, under nitrogen, at ambient temperature for about 20 mins. The reaction mixture was diluted with water and ethyl acetate. The organic layer was separated, washed with water and brine, dried over anhydrous sodium sulfate, filtered, and the filtrate was concentrated. The residue was triturated with ethyl acetate to afford 5.3 g (65%) of product. Recrystallization of the product from ethyl acetate gave the analytical sample, mp 116-117° C. The organic layer was separated washed with water and brine dried over anhydrous sodium sulfate filtered the filtrate was concentrated The residue was triturated with ethyl acetate

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

Procedure: In a round bottom flask equipped for distillation, 15.0 g (54 mmol) of 2-(2-bromoethyl)benzyl bromide and 9.0 g (54 mmol) of triethylphosphite were heated on an oil bath with stirring at 90°-100° C. When ethyl bromide ceased distilling off (1 h) the remaining volatile by-products and triethylphosphite were removed from the mixture by distillation under vacuum. The viscous oil which remained was chromatographed on a column of silica gel with hexane-ethyl acetate (1:1) as eluant. The combined fractions were concentrated under reduced pressure to yield 12.5 g (70%) of the product as a yellow oil. IR(neat): 2987, 1249, 1170, 1064, 964, 802 cm-1. 1H NMR(CDCl3) δ 1.2 (t, 6H); 3.0-4.35 (m, 10H); 7.2 (s, 4H). were heated on an oil bath When ethyl bromide ceased distilling off (1 h) the remaining volatile by-products and triethylphosphite were removed from the mixture by distillation under vacuum The viscous oil which remained was chromatographed on a column of silica gel with hexane-ethyl acetate (1:1) as eluant The combined fractions were concentrated under reduced pressure

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

Procedure: A mixture of 6-bromo-indan-1-one (3.57 g, 17 mmol), 1-(2-bromo-ethyl)-2-bromomethyl-benzene (4.7 g, 17 mmol) in THF (50 mL) was added NaH (816 mg, 34 mmol) at room temperature, the mixture was refluxed for 2 hours. The mixture was quenched with water, concentrated, then extracted with DCM, washed with brine, dried over Na2SO4, concentrated to 6-bromo-3′,4′-dihydro-1′H-spiro[indene-2,2′-naphthalen]-1(3H)-one (1.8 g, 33%). the mixture was refluxed for 2 hours The mixture was quenched with water concentrated extracted with DCM washed with brine dried over Na2SO4 concentrated to 6-bromo-3′,4′-dihydro-1′H-spiro[indene-2,2′-naphthalen]-1(3H)-one (1.8 g, 33%)

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

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

Procedure: A mixture of 6-bromo-indan-1-one (3.57 g, 17 mmol), 1-(2-bromo-ethyl)-2-bromomethyl-benzene (4.7 g, 17 mmol) in THF (50 mL) was added NaH (816 mg, 34 mmol) at room temperature, the mixture was refluxed for 2 hours. The mixture was quenched with water, concentrated, then extracted with DCM, washed with brine, dried over Na2SO4, concentrated to 6-bromo-3′,4′-dihydro-1′H-spiro[indene-2,2′-naphthalen]-1(3H)-one (1.8 g, 33%). the mixture was refluxed for 2 hours The mixture was quenched with water concentrated extracted with DCM washed with brine dried over Na2SO4 concentrated to 6-bromo-3′,4′-dihydro-1′H-spiro[indene-2,2′-naphthalen]-1(3H)-one (1.8 g, 33%)

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

Procedure: Triethylamine (10.0 ml) was added to a solution of 1-bromomethyl-2-(2-bromoethyl)benzene (10 g) and 2-hydrazinopyridine (3.9 g) in dimethylformamide (250 ml), and the mixture was stirred, under nitrogen, at ambient temperature for about 20 mins. The reaction mixture was diluted with water and ethyl acetate. The organic layer was separated, washed with water and brine, dried over anhydrous sodium sulfate, filtered, and the filtrate was concentrated. The residue was triturated with ethyl acetate to afford 5.3 g (65%) of product. Recrystallization of the product from ethyl acetate gave the analytical sample, mp 116-117° C. The organic layer was separated washed with water and brine dried over anhydrous sodium sulfate filtered the filtrate was concentrated The residue was triturated with ethyl acetate

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

Procedure: In a round bottom flask equipped for distillation, 15.0 g (54 mmol) of 2-(2-bromoethyl)benzyl bromide and 9.0 g (54 mmol) of triethylphosphite were heated on an oil bath with stirring at 90°-100° C. When ethyl bromide ceased distilling off (1 h) the remaining volatile by-products and triethylphosphite were removed from the mixture by distillation under vacuum. The viscous oil which remained was chromatographed on a column of silica gel with hexane-ethyl acetate (1:1) as eluant. The combined fractions were concentrated under reduced pressure to yield 12.5 g (70%) of the product as a yellow oil. IR(neat): 2987, 1249, 1170, 1064, 964, 802 cm-1. 1H NMR(CDCl3) δ 1.2 (t, 6H); 3.0-4.35 (m, 10H); 7.2 (s, 4H). were heated on an oil bath When ethyl bromide ceased distilling off (1 h) the remaining volatile by-products and triethylphosphite were removed from the mixture by distillation under vacuum The viscous oil which remained was chromatographed on a column of silica gel with hexane-ethyl acetate (1:1) as eluant The combined fractions were concentrated under reduced pressure

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

Procedure: A mixture of 6-bromo-indan-1-one (3.57 g, 17 mmol), 1-(2-bromo-ethyl)-2-bromomethyl-benzene (4.7 g, 17 mmol) in THF (50 mL) was added NaH (816 mg, 34 mmol) at room temperature, the mixture was refluxed for 2 hours. The mixture was quenched with water, concentrated, then extracted with DCM, washed with brine, dried over Na2SO4, concentrated to 6-bromo-3′,4′-dihydro-1′H-spiro[indene-2,2′-naphthalen]-1(3H)-one (1.8 g, 33%). the mixture was refluxed for 2 hours The mixture was quenched with water concentrated extracted with DCM washed with brine dried over Na2SO4 concentrated to 6-bromo-3′,4′-dihydro-1′H-spiro[indene-2,2′-naphthalen]-1(3H)-one (1.8 g, 33%)