N,1-diphenylethanimine

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: According to the general procedure, a solution of N-(1-phenylethylidene)aniline (50 mg, 0.26 mmol) and rac-32 (7.8 mg, 0.0050 mmol, 1.9 mol %) in CH2Cl2 (3 mL) was pressurized with H2 to 62 bar and stirred for 72 h. Filtration of the reaction mixture and evaporation of the solvent gave 42 as a clear oil (41 mg, 81%). 1H NMR28 (300 MHz, CDCl3): δ 7.50-7.35 (m, 4H), 7.30-7.25 (m, 1H), 7.15 (t, 2H, J=7.5 Hz), 6.70 (t, 1H, J=7.5 Hz), 6.59 (d, 2H, J=7.5 Hz), 4.56 (quin, 1H, J=6.6 Hz), 4.08 (bs, 1H), 1.56 (d, 3H, J=6.6 Hz); 13C NMR (75.5 MHz, CDCl3): δ 147.4, 145.4, 129.3, 128.8, 127.0, 126.0, 117.4, 113.4, 53.6, 25.2. Filtration of the reaction mixture and evaporation of the solvent

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

実験手順: The reaction was carried out in a multiwell hydrogenation vessel. Dichloro-{1,2-Bis[(2R,5R)-2,5-diphenylphospholano]methane}[(1S,2S)-1,2-diphenylethylenediamine)] ruthenium (II) (2.2 mg, 0.0025 mmol) was suspended in degassed isopropanol (2 ml) in a Schlenk flask under nitrogen. Added potassium tert-butoxide (1M in tert-butanol, 0.025 ml) and heated until a yellow solution was obtained. The glass liner was charged with N-(1-phenylethylidene)aniline (98 mg, 0.50 mmol). Charged to 10 bar nitrogen and vented (×5). Added the precatalyst solution and charged to 10 bar nitrogen and vented (×2). Commenced stirring at 1000 rpm and heated to 60° C. Charged to 10 bar H2 and stirred for 18 h. Cooled to room temperature, vented and evaporated to give phenyl-(1-phenylethyl)amine, conversion>99%, ee 71% (GC, sample derivatised by treatment with acetic anhydride pyridine, Chirasil DEX CB, 25 m×0.25 mm, injector/detector 200° C., helium 20 psi, 140° C. for 20 minutes then ramp at 5° C./min to 200° C., hold for 5 minutes, retention times 23.21 minutes and 23.45 minutes). The reaction was carried out in a multiwell hydrogenation vessel was obtained Charged to 10 bar nitrogen Added the precatalyst solution charged to 10 bar nitrogen Charged to 10 bar H2 stirred for 18 h Cooled to room temperature evaporated

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

実験手順: The reaction was carried out in a multiwell hydrogenation vessel. Dichloro-{1,2-Bis[(2R,5R)-2,5-diphenylphospholano]methane}[(1S,2S)-1,2-diphenylethylenediamine)] ruthenium (II) (2.2 mg, 0.0025 mmol) was suspended in degassed isopropanol (2 ml) in a Schlenk flask under nitrogen. Added potassium tert-butoxide (1M in tert-butanol, 0.025 ml) and heated until a yellow solution was obtained. The glass liner was charged with N-(1-phenylethylidene)aniline (98 mg, 0.50 mmol). Charged to 10 bar nitrogen and vented (×5). Added the precatalyst solution and charged to 10 bar nitrogen and vented (×2). Commenced stirring at 1000 rpm and heated to 60° C. Charged to 10 bar H2 and stirred for 18 h. Cooled to room temperature, vented and evaporated to give phenyl-(1-phenylethyl)amine, conversion>99%, ee 71% (GC, sample derivatised by treatment with acetic anhydride pyridine, Chirasil DEX CB, 25 m×0.25 mm, injector/detector 200° C., helium 20 psi, 140° C. for 20 minutes then ramp at 5° C./min to 200° C., hold for 5 minutes, retention times 23.21 minutes and 23.45 minutes). The reaction was carried out in a multiwell hydrogenation vessel was obtained Charged to 10 bar nitrogen Added the precatalyst solution charged to 10 bar nitrogen Charged to 10 bar H2 stirred for 18 h Cooled to room temperature evaporated

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:150.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: In a 500 ml pressure reactor, N-phenyl-(1-phenylethylidene)-amine 63 mg (0.32 mmol), tristriphenylphosphine rhodium (I) chloride 6 mg (0.0065 mmol) and 3,3-dimethyl-1-butene 27 mg (0.32 mmol) were placed and dissolved in toluene 100 mg. While the reactor was stopped with a stopper, the reactants were heated at 150° C. for 2 hours with stirring. After completion of the reaction, the reactant mixture was dissolved in THF 3 ml and then combined with 1 N HCl soln. 10 ml, followed by hydrolysis with stirring for 12 hours at room temperature. After the mixture was three times extracted with Et2O and CH2Cl2, the organic layer was dried over MgSO4 and then filtered, and the solvent was evaporated under reduced pressure. The reactant mixture of the organic layer was purified by column chromatography on silica gel (5:2 hexane:ethyl acetate) to obtain 2-(3,3-dimethylbutyl)phenyl-1-ethanone 56 mg (0.27 mmol). Yield: 85%. Under the same conditions, various ketamines were employed. The results are given in Table 2, below. After completion of the reaction 10 ml, followed by hydrolysis with stirring for 12 hours at room temperature extracted with Et2O and CH2Cl2 the organic layer was dried over MgSO4 filtered the solvent was evaporated under reduced pressure The reactant mixture of the organic layer was purified by column chromatography on silica gel (5:2 hexane:ethyl acetate)

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

実験手順: German Patent Specification No. 72173 discloses a method for producing an aromatic primary monoamine, such as p-nitroaniline, which comprises nitrating a benzalaniline (benzylideneaniline) which may be represented by the following formula ##STR5## wherein r represents a methyl or methoxy group and m is 0, 1 or 2, with nitric acid in sulfuric acid, and then hydrolyzing the resulting product. Example 1 of this patent document states that p-nitroaniline was obtained in a yield of 90% from benzalaniline. The German patent, however, does not at all refer to the use of an α-substituted compound of benzalaniline including the α-methylbenzalaniline represented by formula (III) given hereinabove. Furthermore, it is completely silent on the use of solvents other than sulfuric acid in the nitration reaction. The starting benzalaniline used in this patent can be obtained by condensation between benzaldehyde and aniline. Benzaldehyde, however, is not available at low cost because it is chemically unstable and its production requires a complex process and is costly. Hence, the starting benzalaniline is unsatisfactory for industrial production of p-nitroaniline at low cost.

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

実験手順: According to the general procedure, a solution of N-(1-phenylethylidene)aniline (50 mg, 0.26 mmol) and rac-32 (7.8 mg, 0.0050 mmol, 1.9 mol %) in CH2Cl2 (3 mL) was pressurized with H2 to 62 bar and stirred for 72 h. Filtration of the reaction mixture and evaporation of the solvent gave 42 as a clear oil (41 mg, 81%). 1H NMR28 (300 MHz, CDCl3): δ 7.50-7.35 (m, 4H), 7.30-7.25 (m, 1H), 7.15 (t, 2H, J=7.5 Hz), 6.70 (t, 1H, J=7.5 Hz), 6.59 (d, 2H, J=7.5 Hz), 4.56 (quin, 1H, J=6.6 Hz), 4.08 (bs, 1H), 1.56 (d, 3H, J=6.6 Hz); 13C NMR (75.5 MHz, CDCl3): δ 147.4, 145.4, 129.3, 128.8, 127.0, 126.0, 117.4, 113.4, 53.6, 25.2. Filtration of the reaction mixture and evaporation of the solvent

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

実験手順: The reaction was carried out in a multiwell hydrogenation vessel. Dichloro-{1,2-Bis[(2R,5R)-2,5-diphenylphospholano]methane}[(1S,2S)-1,2-diphenylethylenediamine)] ruthenium (II) (2.2 mg, 0.0025 mmol) was suspended in degassed isopropanol (2 ml) in a Schlenk flask under nitrogen. Added potassium tert-butoxide (1M in tert-butanol, 0.025 ml) and heated until a yellow solution was obtained. The glass liner was charged with N-(1-phenylethylidene)aniline (98 mg, 0.50 mmol). Charged to 10 bar nitrogen and vented (×5). Added the precatalyst solution and charged to 10 bar nitrogen and vented (×2). Commenced stirring at 1000 rpm and heated to 60° C. Charged to 10 bar H2 and stirred for 18 h. Cooled to room temperature, vented and evaporated to give phenyl-(1-phenylethyl)amine, conversion>99%, ee 71% (GC, sample derivatised by treatment with acetic anhydride pyridine, Chirasil DEX CB, 25 m×0.25 mm, injector/detector 200° C., helium 20 psi, 140° C. for 20 minutes then ramp at 5° C./min to 200° C., hold for 5 minutes, retention times 23.21 minutes and 23.45 minutes). The reaction was carried out in a multiwell hydrogenation vessel was obtained Charged to 10 bar nitrogen Added the precatalyst solution charged to 10 bar nitrogen Charged to 10 bar H2 stirred for 18 h Cooled to room temperature evaporated