613-97-8

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

Conditions: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: N-ethyl-N-methylaniline (1 mmol), RuCl3-nH2O (0.05 mmol) and sodium cyanide (1.2 mmol) were charged into a 25-ml side-arm flask, the interior of the reacting container was replaced by oxygen, and an oxygen balloon was attached to supply oxygen at 1 atm. Then, 1.7 ml of a mixed solvent of methanol-acetic acid (volume ratio 3/1) was added thereto at room temperature. Reaction was effected by stirring the mixed liquid at 60° C. for 24 hours. After the reaction mixture liquid was made alkaline with the addition of saturated sodium bicarbonate aqueous solution, the mixture was extracted with 10 ml ethyl acetate once and with 5 ml ethyl acetate twice. The extracted liquid thus obtained was washed with saturated saline solution, and dried over sodium sulfate, thereby obtaining an ethyl acetate solution of N-phenyl-N-ethylaminoacetonitrile and 2-(N-methyl-N-phenylamino)propionitrile. This solution was analyzed by a gas chromatography internal standard method, which revealed the conversion rate of N-ethyl-N-methylaniline being 70% with a yield of N-phenyl-N-ethylaminoacetonitrile being 57% (vs. N-ethyl-N-methylaniline) and that of 2-(N-methyl-N-phenylamino)propionitrile being 7% (vs. N-ethyl-N-methylaniline). at room temperature Reaction the mixture was extracted with 10 ml ethyl acetate once The extracted liquid thus obtained was washed with saturated saline solution dried over sodium sulfate

Conditions: temp:55.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Ethyl-aniline is methylated by reductive alkylation with formaldehyde using isopropyl alcohol as a solvent at 100° C. under 120 psi of H2. After the solvent is stripped the product ethylmethylaniline (NEMA) is purified by distillation at 120° C. at a pressure of 21 mm mercury (Hg). NEMA (80 g, 0.59 mol) is charged to a vessel fitted with a dry-ice condenser and is heated to 50-60° C. Phosgene is transferred from a cylinder to a calibrated trap placed in dry-ice. After condensing 10 mL (14.3 g, 0.145 mol), the trap was connected to the vessel containing NEMA and the phosgene was added over 1 hour. After the addition was complete, the mixture was heated to 120° C. and held at this temperature for 1 hour. The mixture was cooled to 50-60° C. before 11 g (0.275 mol) of NaOH dissolved in 100 mL of water was added to hydrolyze the unreacted acid chloride. The resulting mixture was then extracted with two 100 mL portions of toluene. The product 4,4′-bis(methylethylamino)benzophenone (MEAB) was purified by chromatography on silica gel using toluene as an eluent followed by recrystallization from methylene chloride/hexane. Several grams of highly pure MEAB were obtained. No impurities were detectable by NMR; m.p. 122-124° C. NMR, IR and mass spectra were consistent with the proposed structure. at 100° C. is purified by distillation at 120° C. at a pressure of 21 mm mercury (Hg) NEMA (80 g, 0.59 mol) is charged to a vessel fitted with a dry-ice condenser Phosgene is transferred from a cylinder to a calibrated trap After condensing 10 mL (14.3 g, 0.145 mol) containing NEMA After the addition the mixture was heated to 120° C. was added The resulting mixture was then extracted with two 100 mL portions of toluene The product 4,4′-bis(methylethylamino)benzophenone (MEAB) was purified by chromatography on silica gel followed by recrystallization from methylene chloride/hexane

Conditions: temp:120.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Ethyl-aniline is methylated by reductive alkylation with formaldehyde using isopropyl alcohol as a solvent at 100° C. under 120 psi of H2. After the solvent is stripped the product ethylmethylaniline (NEMA) is purified by distillation at 120° C. at a pressure of 21 mm mercury (Hg). NEMA (80 g, 0.59 mol) is charged to a vessel fitted with a dry-ice condenser and is heated to 50 -60° C. Phosgene is transferred from a cylinder to a calibrated trap placed in dry-ice. After condensing 10 mL (14.3 g, 0.145 mol), the trap was connected to the vessel containing NEMA and the phosgene was added over 1 hour. After the addition was complete, the mixture was heated to 120° C. and held at this temperature for 1 hour. The mixture was cooled to 50-60° C. before 11 g (0.275 mol) of NaOH dissolved in 100 mL of water was added to hydrolyze the unreacted acid chloride. The resulting mixture was then extracted with two 100 mL portions of toluene. The product 4,4′-bis(methylethylamino)benzophenone (MEAB) was purified by chromatography on silica gel using toluene as an eluent followed by recrystallization from methylene chloride/hexane. Several grams of highly pure MEAB were obtained. No impurities were detectable by NMR; m.p. 122-124° C. NMR, IR and mass spectra were consistent with the proposed structure. at 100° C. is purified by distillation at 120° C. at a pressure of 21 mm mercury (Hg) NEMA (80 g, 0.59 mol) is charged to a vessel fitted with a dry-ice condenser is heated to 50 -60° C Phosgene is transferred from a cylinder to a calibrated trap After condensing 10 mL (14.3 g, 0.145 mol) containing NEMA After the addition was added The resulting mixture was then extracted with two 100 mL portions of toluene The product 4,4′-bis(methylethylamino)benzophenone (MEAB) was purified by chromatography on silica gel followed by recrystallization from methylene chloride/hexane

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

Conditions: temp:5.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 19.07 g (0.1 mol) of tosyl chloride, 13.5 g (0.1 mol) of N-ethyl-N-methylaniline and 27.20 g (0.15 mol) of dicyclohexylamine were dissolved in 60 g of dichloromethane, and, after cooling to 5° C., there was added 13.81 g (0.1 mol) of 4-methoxybenzylalcohol. While suppressing excessive elevation of the temperature, the reaction was allowed for 6 hours. After the completion of the reaction, the mixture was concentrated, and the precipitated white solid was washed with ether and dried to give N-(4-methoxybenzyl)-N-ethyl-N-methyl-anilinium tosylate. Yield: 50%. After the completion of the reaction the mixture was concentrated the precipitated white solid was washed with ether dried

Conditions: temp:5.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 19.07 g (0.1 mol) of tosyl chloride, 13.5 g (0.1 mol) of N-ethyl-N-methylaniline and 27.20 g (0.15 mol) of dicyclohexylamine were dissolved in 60 g of dichloromethane, and, after cooling to 5° C., there was added 13.81 g (0.1 mol) of 4-methoxybenzylalcohol. While suppressing excessive elevation of the temperature, the reaction was allowed for 6 hours. After the completion of the reaction, the mixture was concentrated, and the precipitated white solid was washed with ether and dried to give N-(4-methoxybenzyl)-N-ethyl-N-methyl-anilinium tosylate. Yield: 50%. After the completion of the reaction the mixture was concentrated the precipitated white solid was washed with ether dried

Conditions: temp:5.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 19.07 g (0.1 mol) of tosyl chloride, 13.5 g (0.1 mol) of N-ethyl-N-methylaniline and 27.20 g (0.15 mol) of dicyclohexylamine were dissolved in 60 g of dichloromethane, and, after cooling to 5° C., there was added 13.81 g (0.1 mol) of 4-methoxybenzylalcohol. While suppressing excessive elevation of the temperature, the reaction was allowed for 6 hours. After the completion of the reaction, the mixture was concentrated, and the precipitated white solid was washed with ether and dried to give N-(4-methoxybenzyl)-N-ethyl-N-methyl-anilinium tosylate. Yield: 50%. After the completion of the reaction the mixture was concentrated the precipitated white solid was washed with ether dried

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

Procedure: 100 mmol of N-methyl-N-ethylaniline (Aldrich) were quaternized with 100 mmol of bromopropane (Aldrich) at reflux in 100 ml of acetonitrile for 48 hours. After evaporation of the solvent, the N-propyl-N-methyl-N-ethylanilinium bromide (PMEA.Br) obtained was purified by washing with ether. 50 mmol of KBFST were added to 50 mmol of PMEA.Br in 100 ml of water, and then the solution was extracted with twice 50 ml of dichloromethane. After evaporation of the solvent and drying under vacuum, PMEA.BFST was obtained. The two optical isomer forms of this salt were separated on a chiral column. The two optical isomers isolated serve as a chiral reaction medium. After evaporation of the solvent

Conditions: temp:55.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Ethyl-aniline is methylated by reductive alkylation with formaldehyde using isopropyl alcohol as a solvent at 100° C. under 120 psi of H2. After the solvent is stripped the product ethylmethylaniline (NEMA) is purified by distillation at 120° C. at a pressure of 21 mm mercury (Hg). NEMA (80 g, 0.59 mol) is charged to a vessel fitted with a dry-ice condenser and is heated to 50-60° C. Phosgene is transferred from a cylinder to a calibrated trap placed in dry-ice. After condensing 10 mL (14.3 g, 0.145 mol), the trap was connected to the vessel containing NEMA and the phosgene was added over 1 hour. After the addition was complete, the mixture was heated to 120° C. and held at this temperature for 1 hour. The mixture was cooled to 50-60° C. before 11 g (0.275 mol) of NaOH dissolved in 100 mL of water was added to hydrolyze the unreacted acid chloride. The resulting mixture was then extracted with two 100 mL portions of toluene. The product 4,4′-bis(methylethylamino)benzophenone (MEAB) was purified by chromatography on silica gel using toluene as an eluent followed by recrystallization from methylene chloride/hexane. Several grams of highly pure MEAB were obtained. No impurities were detectable by NMR; m.p. 122-124° C. NMR, IR and mass spectra were consistent with the proposed structure. at 100° C. is purified by distillation at 120° C. at a pressure of 21 mm mercury (Hg) NEMA (80 g, 0.59 mol) is charged to a vessel fitted with a dry-ice condenser Phosgene is transferred from a cylinder to a calibrated trap After condensing 10 mL (14.3 g, 0.145 mol) containing NEMA After the addition the mixture was heated to 120° C. was added The resulting mixture was then extracted with two 100 mL portions of toluene The product 4,4′-bis(methylethylamino)benzophenone (MEAB) was purified by chromatography on silica gel followed by recrystallization from methylene chloride/hexane

Conditions: temp:55.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Ethyl-aniline is methylated by reductive alkylation with formaldehyde using isopropyl alcohol as a solvent at 100° C. under 120 psi of H2. After the solvent is stripped the product ethylmethylaniline (NEMA) is purified by distillation at 120° C. at a pressure of 21 mm mercury (Hg). NEMA (80 g, 0.59 mol) is charged to a vessel fitted with a dry-ice condenser and is heated to 50-60° C. Phosgene is transferred from a cylinder to a calibrated trap placed in dry-ice. After condensing 10 mL (14.3 g, 0.145 mol), the trap was connected to the vessel containing NEMA and the phosgene was added over 1 hour. After the addition was complete, the mixture was heated to 120° C. and held at this temperature for 1 hour. The mixture was cooled to 50-60° C. before 11 g (0.275 mol) of NaOH dissolved in 100 mL of water was added to hydrolyze the unreacted acid chloride. The resulting mixture was then extracted with two 100 mL portions of toluene. The product 4,4′-bis(methylethylamino)benzophenone (MEAB) was purified by chromatography on silica gel using toluene as an eluent followed by recrystallization from methylene chloride/hexane. Several grams of highly pure MEAB were obtained. No impurities were detectable by NMR; m.p. 122-124° C. NMR, IR and mass spectra were consistent with the proposed structure. at 100° C. is purified by distillation at 120° C. at a pressure of 21 mm mercury (Hg) NEMA (80 g, 0.59 mol) is charged to a vessel fitted with a dry-ice condenser Phosgene is transferred from a cylinder to a calibrated trap After condensing 10 mL (14.3 g, 0.145 mol) containing NEMA After the addition the mixture was heated to 120° C. was added The resulting mixture was then extracted with two 100 mL portions of toluene The product 4,4′-bis(methylethylamino)benzophenone (MEAB) was purified by chromatography on silica gel followed by recrystallization from methylene chloride/hexane

Conditions: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: N-ethyl-N-methylaniline (1 mmol), RuCl3-nH2O (0.05 mmol) and sodium cyanide (1.2 mmol) were charged into a 25-ml side-arm flask, the interior of the reacting container was replaced by oxygen, and an oxygen balloon was attached to supply oxygen at 1 atm. Then, 1.7 ml of a mixed solvent of methanol-acetic acid (volume ratio 3/1) was added thereto at room temperature. Reaction was effected by stirring the mixed liquid at 60° C. for 24 hours. After the reaction mixture liquid was made alkaline with the addition of saturated sodium bicarbonate aqueous solution, the mixture was extracted with 10 ml ethyl acetate once and with 5 ml ethyl acetate twice. The extracted liquid thus obtained was washed with saturated saline solution, and dried over sodium sulfate, thereby obtaining an ethyl acetate solution of N-phenyl-N-ethylaminoacetonitrile and 2-(N-methyl-N-phenylamino)propionitrile. This solution was analyzed by a gas chromatography internal standard method, which revealed the conversion rate of N-ethyl-N-methylaniline being 70% with a yield of N-phenyl-N-ethylaminoacetonitrile being 57% (vs. N-ethyl-N-methylaniline) and that of 2-(N-methyl-N-phenylamino)propionitrile being 7% (vs. N-ethyl-N-methylaniline). at room temperature Reaction the mixture was extracted with 10 ml ethyl acetate once The extracted liquid thus obtained was washed with saturated saline solution dried over sodium sulfate