1,1-diphenylpropan-1-ol

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

Procedure: 3.2 G of diphenyl-ethyl-carbinol, 1.9 g of isocyanate acetic acid ethyl ester and 1.6 ml of pyridine are heated at 50° C for 72 hours. The solution is diluted with 50 ml of ether, washed several times at 0° C with 0.1-molar citric acid solution and water, dried over sodium sulfate, and completely evaporated under reduced pressure. After elimination of 2.3 g of diphenylethylcarbinol by means of petroleum ether, 1,1-diphenyl-propyloxycarbonyl-glycine-ethyl ester is obtained in the form of an oil; Rf = 0.2 in the thin-layer chromatogram in chloroform. washed several times at 0° C with 0.1-molar citric acid solution and water dried over sodium sulfate completely evaporated under reduced pressure

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

Procedure: 3.2 G of diphenyl-ethyl-carbinol, 1.9 g of isocyanate acetic acid ethyl ester and 1.6 ml of pyridine are heated at 50° C for 72 hours. The solution is diluted with 50 ml of ether, washed several times at 0° C with 0.1-molar citric acid solution and water, dried over sodium sulfate, and completely evaporated under reduced pressure. After elimination of 2.3 g of diphenylethylcarbinol by means of petroleum ether, 1,1-diphenyl-propyloxycarbonyl-glycine-ethyl ester is obtained in the form of an oil; Rf = 0.2 in the thin-layer chromatogram in chloroform. washed several times at 0° C with 0.1-molar citric acid solution and water dried over sodium sulfate completely evaporated under reduced pressure

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

Procedure: A mixture of 21 g. of α-vinyl-benzhydrol and 84 ml. of cyclohexane is refluxed in the presence of palladium catalyst. When the reaction is over, as evidenced by thin layer chromatography, the mixture is cooled, the catalyst is filtered off, and the filtrate is evaporated under reduced pressure. 21.2 g. of crystalline α-ethyl-benzhydrol, melting at 93°-94° C, are obtained as residue. A mixture of 21 g the mixture is cooled the catalyst is filtered off the filtrate is evaporated under reduced pressure

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

Procedure: A mixture of 1,1-diphenyl-1-propanol (64 g, 0.30 mol), isopropanol (300 ml) and a 5 N solution of sulphuric acid (150 ml) was heated at reflux temperature for 18 h. The reaction mixture was cooled, diluted with water (600 ml) and extracted with toluene (3×150 ml). The combined organic phases was dried (Na2SO4) and the solvent was evaporated in vacuo to give a solid residue which was triturated with iso-octane. The solid was collected by filtration to give 28.8 g (49%) of 1,1-diphenyl-1-propene. at reflux temperature for 18 h The reaction mixture was cooled extracted with toluene (3×150 ml) The combined organic phases was dried (Na2SO4) the solvent was evaporated in vacuo to give a solid residue which was triturated with iso-octane The solid was collected by filtration

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

Procedure: To a well-stirred solution of propiophenone (20.1 g, 0.15 mol) in dry diethyl ether (125 ml) kept under nitrogen at room temperature was added a solution of phenylmagnesium bromide (55 ml, 3 M in diethyl ether) in dry diethyl ether (25 ml). The reaction mixture was stirred for 1 h and a mixture of a saturated ammonium chloride solution (100 ml) and water (50 ml) was added. The phases were separated and the aqueous phase was extracted with diethyl ether (100 ml). The combined organic phases was washed with a 0.5 N hydrochloric acid solution and dried (Na2SO4). The solvent was evaporated in vacuo to give a solid residue which was triturated with cyclohexane (100 ml). The solid was collected by filtration and dried to give 26.4 g (83%) of 1,1-diphenyl-1-propanol. kept under nitrogen at room temperature was added The phases were separated the aqueous phase was extracted with diethyl ether (100 ml) The combined organic phases was washed with a 0.5 N hydrochloric acid solution dried (Na2SO4) The solvent was evaporated in vacuo to give a solid residue which was triturated with cyclohexane (100 ml) The solid was collected by filtration dried

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

Procedure: To a well-stirred solution of propiophenone (20.1 g, 0.15 mol) in dry diethyl ether (125 ml) kept under nitrogen at room temperature was added a solution of phenylmagnesium bromide (55 ml, 3 M in diethyl ether) in dry diethyl ether (25 ml). The reaction mixture was stirred for 1 h and a mixture of a saturated ammonium chloride solution (100 ml) and water (50 ml) was added. The phases were separated and the aqueous phase was extracted with diethyl ether (100 ml). The combined organic phases was washed with a 0.5 N hydrochloric acid solution and dried (Na2SO4). The solvent was evaporated in vacuo to give a solid residue which was triturated with cyclohexane (100 ml). The solid was collected by filtration and dried to give 26.4 g (83%) of 1,1-diphenyl-1-propanol. kept under nitrogen at room temperature was added The phases were separated the aqueous phase was extracted with diethyl ether (100 ml) The combined organic phases was washed with a 0.5 N hydrochloric acid solution dried (Na2SO4) The solvent was evaporated in vacuo to give a solid residue which was triturated with cyclohexane (100 ml) The solid was collected by filtration dried

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

Procedure: A mixture of 21 g. of α-vinyl-benzhydrol and 84 ml. of cyclohexane is refluxed in the presence of palladium catalyst. When the reaction is over, as evidenced by thin layer chromatography, the mixture is cooled, the catalyst is filtered off, and the filtrate is evaporated under reduced pressure. 21.2 g. of crystalline α-ethyl-benzhydrol, melting at 93°-94° C., are obtained as residue. A mixture of 21 g the mixture is cooled the catalyst is filtered off the filtrate is evaporated under reduced pressure

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

Procedure: 3.2 G of diphenyl-ethyl-carbinol, 1.9 g of isocyanate acetic acid ethyl ester and 1.6 ml of pyridine are heated at 50° C for 72 hours. The solution is diluted with 50 ml of ether, washed several times at 0° C with 0.1-molar citric acid solution and water, dried over sodium sulfate, and completely evaporated under reduced pressure. After elimination of 2.3 g of diphenylethylcarbinol by means of petroleum ether, 1,1-diphenyl-propyloxycarbonyl-glycine-ethyl ester is obtained in the form of an oil; Rf = 0.2 in the thin-layer chromatogram in chloroform. washed several times at 0° C with 0.1-molar citric acid solution and water dried over sodium sulfate completely evaporated under reduced pressure

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

Procedure: 3.2 G of diphenyl-ethyl-carbinol, 1.9 g of isocyanate acetic acid ethyl ester and 1.6 ml of pyridine are heated at 50° C for 72 hours. The solution is diluted with 50 ml of ether, washed several times at 0° C with 0.1-molar citric acid solution and water, dried over sodium sulfate, and completely evaporated under reduced pressure. After elimination of 2.3 g of diphenylethylcarbinol by means of petroleum ether, 1,1-diphenyl-propyloxycarbonyl-glycine-ethyl ester is obtained in the form of an oil; Rf = 0.2 in the thin-layer chromatogram in chloroform. washed several times at 0° C with 0.1-molar citric acid solution and water dried over sodium sulfate completely evaporated under reduced pressure

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

Procedure: A mixture of 1,1-diphenyl-1-propanol (64 g, 0.30 mol), isopropanol (300 ml) and a 5 N solution of sulphuric acid (150 ml) was heated at reflux temperature for 18 h. The reaction mixture was cooled, diluted with water (600 ml) and extracted with toluene (3×150 ml). The combined organic phases was dried over sodium sulphate and the solvent was evaporated in vacuo to give a solid residue which was trituated with iso-octane. The solid was collected by filtration to give 28.8 g (49%) of 1,1-diphenyl-1-propene. at reflux temperature for 18 h The reaction mixture was cooled extracted with toluene (3×150 ml) The combined organic phases was dried over sodium sulphate the solvent was evaporated in vacuo to give a solid residue which The solid was collected by filtration

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

Procedure: To a well-stirred solution of propiophenone (20.1 g, 0.15 mol) in dry diethyl ether (125 ml) kept under nitrogen at room temperature was added a solution of phenylmagnesium bromide (55 ml, 3 M in diethyl ether) in dry diethyl ether (25 ml). The reaction mixture was stirred for 1 h and a mixture of a saturated ammonium chloride solution (100 ml) and water (50 ml) was added. The phases were separated and the aqueous phase was extracted with diethyl ether (100 ml). The combined organic phases was washed with a 0.5 N hydrochloric acid solution and dried over sodium sulphate. The solvent was evaporated in vacuo to give a solid residue which was trituated with cyclohexane (100 ml). The solid was collected by filtration and dried to give 26.4 g (83%) of 1,1-diphenyl-1-propanol. kept under nitrogen at room temperature was added The phases were separated the aqueous phase was extracted with diethyl ether (100 ml) The combined organic phases was washed with a 0.5 N hydrochloric acid solution dried over sodium sulphate The solvent was evaporated in vacuo to give a solid residue which The solid was collected by filtration dried

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

Procedure: A mixture of 21 g. of α-vinyl-benzhydrol and 84 ml. of cyclohexane is refluxed in the presence of palladium catalyst. When the reaction is over, as evidenced by thin layer chromatography, the mixture is cooled, the catalyst is filtered off, and the filtrate is evaporated under reduced pressure. 21.2 g. of crystalline α-ethyl-benzhydrol, melting at 93°-94° C, are obtained as residue. A mixture of 21 g the mixture is cooled the catalyst is filtered off the filtrate is evaporated under reduced pressure