2,3,4,5-tetrahydro-1-benzoxepin-5-amine

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

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

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

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

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: 1.54 g (13.4 mmol) of methanesulfonyl chloride were added dropwise with ice cooling to a solution of 2.0 g (12.2 mmol) of 5-amino-2,3,4,5-tetrahydro-1-benzoxepine (Example 6b) and 3.7 g (36.6 mmol triethylamine in 40 ml of THF. The mixture was allowed to come to RT and was stirred overnight and treated with 50 ml of water, and the THF was distilled off in vacuo. The residue was diluted with a further 50 ml of water and stirred for 3 h, and the deposited product was filtered off with suction. After drying in vacuo, 2.2 g of 5-methylsulfonylamino-2,3,4,5-tetrahydro-1-benzoxepine were obtained, m.p. 105-106° C. b) A solution of 1.1 g (6.2 mmol) of 5-methylsulfonylamino-2,3,4,5-tetrahydro-1-benzoxepine in 15 ml of THF was added dropwise to a suspension of 0.23 g (6.2 mmol) of 80 percent sodium hydride in 10 ml of THF. After 2 h at RT, 0.94 g (6.7 mmol) of iodomethane were added and the mixture was stirred overnight at RT. After distilling off the solvent in vacuo, the residue was taken up in EA, and the solution was washed with dilute hydrochloric acid and water, dried over magnesium sulfate and concentrated. Subsequent recrystallization of the product from isopropanol yielded 0.5 g of 5-(N-methyl-N-methylsulfonylamino)-2,3,4,5-tetrahydro-1-benzoxepine, m.p. 143-145° C. to come to RT the THF was distilled off in vacuo The residue was diluted with a further 50 ml of water stirred for 3 h the deposited product was filtered off with suction After drying in vacuo

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

Procedure: 1.54 g (13.4 mmol) of methanesulfonyl chloride were added dropwise with ice cooling to a solution of 2.0 g (12.2 mmol) of 5-amino-2,3,4,5-tetrahydro-1-benzoxepine (Example 6b) and 3.7 g (36.6 mmol triethylamine in 40 ml of THF. The mixture was allowed to come to RT and was stirred overnight and treated with 50 ml of water, and the THF was distilled off in vacuo. The residue was diluted with a further 50 ml of water and stirred for 3 h, and the deposited product was filtered off with suction. After drying in vacuo, 2.2 g of 5-methylsulfonylamino-2,3,4,5-tetrahydro-1-benzoxepine were obtained, m.p. 105-106° C. b) A solution of 1.1 g (6.2 mmol) of 5-methylsulfonylamino-2,3,4,5-tetrahydro-1-benzoxepine in 15 ml of THF was added dropwise to a suspension of 0.23 g (6.2 mmol) of 80 percent sodium hydride in 10 ml of THF. After 2 h at RT, 0.94 g (6.7 mmol) of iodomethane were added and the mixture was stirred overnight at RT. After distilling off the solvent in vacuo, the residue was taken up in EA, and the solution was washed with dilute hydrochloric acid and water, dried over magnesium sulfate and concentrated. Subsequent recrystallization of the product from isopropanol yielded 0.5 g of 5-(N-methyl-N-methylsulfonylamino)-2,3,4,5-tetrahydro-1-benzoxepine, m.p. 143-145° C. to come to RT the THF was distilled off in vacuo The residue was diluted with a further 50 ml of water stirred for 3 h the deposited product was filtered off with suction After drying in vacuo

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

Procedure: A solution of 10.0 g (62 mmol) of 3,4-dihydro-1-benzoxepin-5(2H)-one (J. Chem. Soc., Perkin Trans. 1 (1991), 2763) and 4.63 g (68 mmol) of hydroxylamine hydrochloride in 45 ml of ethanol and 45 ml of pyridine was heated under reflux for 5 h. After distilling off the solvents on a rotary evaporator, the residue was treated with water, adjusted to pH 2 with dil hydrochloric acid and stirred for 3 h. After filtering off the precipitated product with suction and drying it, 10.2 g of 3,4-dihydro-1-benzoxepin-5(2H)-one oxime were obtained, m.p. 96-98° C. b) A solution of 2.0 g (11.3 mmol) of 3,4-dihydro-1-benzoxepin-5(2H)-one oxime in 15 ml of 1,2-dimethoxyethane (DME) was added dropwise at 0° C. under argon to a mixture of 4.5 g (23.7 mmol) of titanium tetrachloride and 1.79 g (47.4 mmol) of sodium borohydride in 50 ml of DME over the course of 20 min. After stirring at RT for 2 days, 100 ml of water were added dropwise and the mixture was rendered alkaline using conc. ammonia solution. After filtering off the precipitate with suction, the filtrate was extracted three times with EA. After washing with sodium chloride solution, drying over magnesium sulfate and concentrating, 2.1 g of 5-amino-2,3,4,5-tetrahydro-1-benzoxepine were obtained. c) 0.86 g (6.7 mmol) of ethanesulfonyl chloride was added dropwise with ice cooling to a solution of 1.0 g (6.1 mmol) of 5-amino-2,3,4,5-tetrahydro-1-benzoxepine and 2.5 g (24 mmol) of triethylamine in 20 ml of THF. The mixture was allowed to come to room temperature and was stirred overnight, and the solvent was distilled off in vacuo. After stirring the residue with water, the deposited product was filtered off with suction. 1.1 g of 5-ethylsulfonylamino-2,3,4,5-tetrahydro-1-berzoxepine were obtained, m.p. 109-111° C. d) A solution of 1.0 g (3.9 mmol) of 5-ethylsulfonylamino-2,3,4,5-tetrahydro-1-benzoxepine in 15 ml of THF were added dropwise under nitrogen to a suspension of 0.16 g (5.4 mmol) of 80 percent sodium hydride in 10 ml of THF. After stirring at RT for 3 h, 1.6 g (11 mmol) of methyl iodide were added dropwise and the mixture was additionally stirred overnight at RT. After distilling off the solvent, the residue was treated with water and extracted with EA. The organic phase was concentrated in vacuo after drying over sodium sulfate. 1.0 g of 5-(N-ethylsulfonyl-N-methylamino)-2,3,4,5-tetrahydro-1-benzoxepine was obtained, m.p. 122-124° C. to come to room temperature the solvent was distilled off in vacuo After stirring the residue with water the deposited product was filtered off with suction 1.1 g of 5-ethylsulfonylamino-2,3,4,5-tetrahydro-1-berzoxepine were obtained After stirring at RT for 3 h the mixture was additionally stirred overnight at RT After distilling off the solvent the residue was treated with water extracted with EA The organic phase was concentrated in vacuo after drying over sodium sulfate

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

Procedure: A solution of 10.0 g (62 mmol) of 3,4-dihydro-1-benzoxepin-5(2H)-one (J. Chem. Soc., Perkin Trans. 1 (1991), 2763) and 4.63 g (68 mmol) of hydroxylamine hydrochloride in 45 ml of ethanol and 45 ml of pyridine was heated under reflux for 5 h. After distilling off the solvents on a rotary evaporator, the residue was treated with water, adjusted to pH 2 with dil hydrochloric acid and stirred for 3 h. After filtering off the precipitated product with suction and drying it, 10.2 g of 3,4-dihydro-1-benzoxepin-5(2H)-one oxime were obtained, m.p. 96-98° C. b) A solution of 2.0 g (11.3 mmol) of 3,4-dihydro-1-benzoxepin-5(2H)-one oxime in 15 ml of 1,2-dimethoxyethane (DME) was added dropwise at 0° C. under argon to a mixture of 4.5 g (23.7 mmol) of titanium tetrachloride and 1.79 g (47.4 mmol) of sodium borohydride in 50 ml of DME over the course of 20 min. After stirring at RT for 2 days, 100 ml of water were added dropwise and the mixture was rendered alkaline using conc. ammonia solution. After filtering off the precipitate with suction, the filtrate was extracted three times with EA. After washing with sodium chloride solution, drying over magnesium sulfate and concentrating, 2.1 g of 5-amino-2,3,4,5-tetrahydro-1-benzoxepine were obtained. c) 0.86 g (6.7 mmol) of ethanesulfonyl chloride was added dropwise with ice cooling to a solution of 1.0 g (6.1 mmol) of 5-amino-2,3,4,5-tetrahydro-1-benzoxepine and 2.5 g (24 mmol) of triethylamine in 20 ml of THF. The mixture was allowed to come to room temperature and was stirred overnight, and the solvent was distilled off in vacuo. After stirring the residue with water, the deposited product was filtered off with suction. 1.1 g of 5-ethylsulfonylamino-2,3,4,5-tetrahydro-1-berzoxepine were obtained, m.p. 109-111° C. d) A solution of 1.0 g (3.9 mmol) of 5-ethylsulfonylamino-2,3,4,5-tetrahydro-1-benzoxepine in 15 ml of THF were added dropwise under nitrogen to a suspension of 0.16 g (5.4 mmol) of 80 percent sodium hydride in 10 ml of THF. After stirring at RT for 3 h, 1.6 g (11 mmol) of methyl iodide were added dropwise and the mixture was additionally stirred overnight at RT. After distilling off the solvent, the residue was treated with water and extracted with EA. The organic phase was concentrated in vacuo after drying over sodium sulfate. 1.0 g of 5-(N-ethylsulfonyl-N-methylamino)-2,3,4,5-tetrahydro-1-benzoxepine was obtained, m.p. 122-124° C. After filtering off the precipitate with suction the filtrate was extracted three times with EA After washing with sodium chloride solution drying over magnesium sulfate concentrating

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

Procedure: A solution of 10.0 g (62 mmol) of 3,4-dihydro-1-benzoxepin-5(2H)-one (J. Chem. Soc., Perkin Trans. 1 (1991), 2763) and 4.63 g (68 mmol) of hydroxylamine hydrochloride in 45 ml of ethanol and 45 ml of pyridine was heated under reflux for 5 h. After distilling off the solvents on a rotary evaporator, the residue was treated with water, adjusted to pH 2 with dil hydrochloric acid and stirred for 3 h. After filtering off the precipitated product with suction and drying it, 10.2 g of 3,4-dihydro-1-benzoxepin-5(2H)-one oxime were obtained, m.p. 96-98° C. b) A solution of 2.0 g (11.3 mmol) of 3,4-dihydro-1-benzoxepin-5(2H)-one oxime in 15 ml of 1,2-dimethoxyethane (DME) was added dropwise at 0° C. under argon to a mixture of 4.5 g (23.7 mmol) of titanium tetrachloride and 1.79 g (47.4 mmol) of sodium borohydride in 50 ml of DME over the course of 20 min. After stirring at RT for 2 days, 100 ml of water were added dropwise and the mixture was rendered alkaline using conc. ammonia solution. After filtering off the precipitate with suction, the filtrate was extracted three times with EA. After washing with sodium chloride solution, drying over magnesium sulfate and concentrating, 2.1 g of 5-amino-2,3,4,5-tetrahydro-1-benzoxepine were obtained. c) 0.86 g (6.7 mmol) of ethanesulfonyl chloride was added dropwise with ice cooling to a solution of 1.0 g (6.1 mmol) of 5-amino-2,3,4,5-tetrahydro-1-benzoxepine and 2.5 g (24 mmol) of triethylamine in 20 ml of THF. The mixture was allowed to come to room temperature and was stirred overnight, and the solvent was distilled off in vacuo. After stirring the residue with water, the deposited product was filtered off with suction. 1.1 g of 5-ethylsulfonylamino-2,3,4,5-tetrahydro-1-berzoxepine were obtained, m.p. 109-111° C. d) A solution of 1.0 g (3.9 mmol) of 5-ethylsulfonylamino-2,3,4,5-tetrahydro-1-benzoxepine in 15 ml of THF were added dropwise under nitrogen to a suspension of 0.16 g (5.4 mmol) of 80 percent sodium hydride in 10 ml of THF. After stirring at RT for 3 h, 1.6 g (11 mmol) of methyl iodide were added dropwise and the mixture was additionally stirred overnight at RT. After distilling off the solvent, the residue was treated with water and extracted with EA. The organic phase was concentrated in vacuo after drying over sodium sulfate. 1.0 g of 5-(N-ethylsulfonyl-N-methylamino)-2,3,4,5-tetrahydro-1-benzoxepine was obtained, m.p. 122-124° C. After filtering off the precipitate with suction the filtrate was extracted three times with EA After washing with sodium chloride solution drying over magnesium sulfate concentrating

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

Procedure: 5-amino-2,3,4,5-tetrahydro-1-benzoxepine and 4-chlorobutyryl choride were used to produce the above compound in the same way as Reference Example 8. to produce the above compound in the same way as Reference Example 8