ethyl N-methylcarbamate

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: To a solution of 2-isopropoxyphenol (1.38 g, 0.01 mole) and ethyl N-methylcarbamate (1.03 g, 0.01 mole) in toluene (10 ml), was added phosphoryl chloride (1.54 g, 0.01 mole) and refluxed for six hours. The reaction mixture was worked up as described earlier to give 2-isopropylphenyl N-methylcarbamate of the formula (VII) as a solid, crystallised from pet. ether, m.p. 88° C. to 93° C. refluxed for six hours

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

実験手順: To a solution of 2-isopropoxyphenol (1.52 g, 0.01 mole) and ethyl N-methylcarbamate (1.03 g, 0.01 mole) in dichloroethane (10 ml, was added phosphoryl chloride (1.54 g, 0.01 mole) and refluxed for six hours. The reaction mixture was worked up as described earlier to give 2-isopropoxyphenyl N-methylcarbamate of the formula (VI) as a solid, crystallised from pet. ether, m.p. 89° C. to 90° C. refluxed for six hours

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

実験手順: To a solution of 2-isopropoxyphenol (1.52 g, 0.01 mole) and ethyl N-methylcarbamate (1.03 g, 0.01 mole) in dichloroethane (10 ml, was added phosphoryl chloride (1.54 g, 0.01 mole) and refluxed for six hours. The reaction mixture was worked up as described earlier to give 2-isopropoxyphenyl N-methylcarbamate of the formula (VI) as a solid, crystallised from pet. ether, m.p. 89° C. to 90° C. refluxed for six hours

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

実験手順: To a solution of 2-sec butylphenol (1.5 g, 0.01 mole) and ethyl N-methylcarbamate (1.03 g, 0.01 mole), along with phosphorus pentachloride (1.05 g, 0.05 mole) in toluene (10 ml) was stirred at 28° C. and afterwards it was refluxed for 7 hours and worked up as usual to get the title compound. afterwards it was refluxed for 7 hours

反応条件: temp:140.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 2-sec butylphenol (1.5 g, 0.01 mole) and ethyl N-methylcarbamate (1.03 g, 0.01 mole) was added phosphorus tribromide (2.7 g, 0.01 mole) and the contents were heated at 140° C. for 15 hours. The reaction mixture was worked up as described earlier to give 2-sec butylphenyl N-methylcarbamate, identified by spectral data.

反応条件: temp:140.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 2-sec butylphenol (1.5 g, 0.01 mole) and ethyl N-methylcarbamate (1.03 g, 0.01 mole) was added phosphorus tribromide (2.7 g, 0.01 mole) and the contents were heated at 140° C. for 15 hours. The reaction mixture was worked up as described earlier to give 2-sec butylphenyl N-methylcarbamate, identified by spectral data.

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

実験手順: To a solution of 2-sec butylphenol (1.5 g, 0.01 mole) and ethyl N-methylcarbamate (1.03 g, 0.01 mole) in toluene (10 ml) at 60° C., phosphoryl chloride (0.77 g, 0.05 mole) was added dropwise during 0.5 hours and the contents refluxed for 5 hours. It was worked up as described earlier to furnish 2-sec butylphenyl N-methylcarbamate of the formula (III). the contents refluxed for 5 hours

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

実験手順: To a solution of 2-sec butylphenol (1.5 g, 0.01 mole) and ethyl N-methylcarbamate (1.03 g, 0.01 mole) in ethylene dichloride (6 ml) was added phosphoryl chloride (0.77 g, 0.05 mole) and the reaction mixture was refluxed under stirring for twenty hours. It was poured onto ice-cold water. The organic layer separated and aqueous layer was extracted with dichloroethane. The combined organic layer was washed with water, dried (Na2SO4) and distilled to give liquid residue, which was further purified by distillation to give 2-sec butyl N-methylcarbamate of the formula (III) [96% by GLC, DV-101 (3%), 150° C., nitrogen, 30 ml/min.] as a liquid, b.p. 110° C. (vap.)/4 mm; IR: 3320 (N--H), 1730 (--COO--), 1535,1490 and 750 (aromatic); PMR (CDCl3, 90 MHz): 0.81 (3H,t, primary methyl of side chain, 1.58 (2H, m, methylene protons of side chain), 2.88 (4H, doublet overlapping a multiplet, NH--CH3 and benzylic proton), 4.97 (1H, br s, N--H) and 6.95 to 7.25 (4H, m, aromatic). the reaction mixture was refluxed It was poured onto ice-cold water The organic layer separated aqueous layer was extracted with dichloroethane The combined organic layer was washed with water dried (Na2SO4) distilled to give liquid residue, which was further purified by distillation

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

実験手順: To a solution of 2-sec butylphenol (1.5 g, 0.01 mole) and ethyl N-methylcarbamate (1.03 g, 0.01 mole) in ethylene dichloride (6 ml) was added phosphoryl chloride (0.77 g, 0.05 mole) and the reaction mixture was refluxed under stirring for twenty hours. It was poured onto ice-cold water. The organic layer separated and aqueous layer was extracted with dichloroethane. The combined organic layer was washed with water, dried (Na2SO4) and distilled to give liquid residue, which was further purified by distillation to give 2-sec butyl N-methylcarbamate of the formula (III) [96% by GLC, DV-101 (3%), 150° C., nitrogen, 30 ml/min.] as a liquid, b.p. 110° C. (vap.)/4 mm; IR: 3320 (N--H), 1730 (--COO--), 1535,1490 and 750 (aromatic); PMR (CDCl3, 90 MHz): 0.81 (3H,t, primary methyl of side chain, 1.58 (2H, m, methylene protons of side chain), 2.88 (4H, doublet overlapping a multiplet, NH--CH3 and benzylic proton), 4.97 (1H, br s, N--H) and 6.95 to 7.25 (4H, m, aromatic). the reaction mixture was refluxed It was poured onto ice-cold water The organic layer separated aqueous layer was extracted with dichloroethane The combined organic layer was washed with water dried (Na2SO4) distilled to give liquid residue, which was further purified by distillation