diethyl hexanedioate

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

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

Procedure: Into a 3 neck flask, equipped with water cooler, were added 43.8 mL (0.22 mol) of diethyladipate and 220 mL THF. 16.3 g (0.24 mol, 1.1 equivalents) of NaOEt were added in small portions, at 20° C., and the reaction mixture was stirred at 60° C. for 16 hours. After cooling to 20° C., 48.6 g (0.20 mol) of 2-phenyl-benzyl bromide was added dropwise. The reaction mixture was stirred at 60° C., for 16 hours, to give 2-(2-phenyl-benzyl) adipic acid diethylester as a viscous oil, in a yield of 92%. After cooling to 20° C. The reaction mixture was stirred at 60° C., for 16 hours

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

Procedure: Ethyl-2-oxocyclopentane carboxylate (3.9 gm 0.025 m) was fluorinated in a similar manner to that described in Example 1. Work up gave ethyl-2-fluoro-2-oxocyclopentane carboxylate [NMR(CDCl3); 19F, δF =-164.6 ppm (t) JHF =21.0 Hz. MS (EI); M+ 174]. Yield 56%. Also recognised in the reaction mixture was cyclopentanone [M.S. (EI); 84(M+)], unreacted starting material, and diethyl adipate [M.S. (CI); 203 (M+1)+ ]. Conversion 80%.

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

Procedure: The process was carried out in a high-viscosity reactor model CRP 2,5 Batch from List AG. The high-viscosity reactor is a machine having two horizontal corotating mixing shafts. Kneading devices which intermesh and thus ensure rapid and homogeneous mixing are located on the shafts. In addition, the machine has a discharge screw by means of which the product can be conveyed out of the reaction chamber. It can be operated continuously or batchwise. The reactor has a free volume of about 2.5 l. The reaction chamber of the machine can be heated. Volatile constituents can be taken off via a vent. 1336 g of diethyl adipate and 472 g of sodium ethoxide were placed in the high-viscosity reactor. After start-up of the kneader and commencement of mixing of the starting materials a viscous mass was immediately formed. While kneading slowly, the temperature was slowly increased to 120° C. A vacuum of 10 mbar was slowly built up. The temperature of 120° C. was reached after about 15 minutes. Slow kneading was then continued at a temperature of 120° C. for 30 minutes until a pulverized white solid had been obtained. The powder formed was discharged by means of a transport screw and subsequently hydrolysed using half-strength sulphuric acid. Phase separation and distillation at 120° C./10 mbar gave 1021 g of ethyl cyclopentanone-2-carboxylate, viz. about 99% of theory. Diethyl adipate could no longer be detected. The process was carried out in a high-viscosity reactor mixing shafts Kneading devices which intermesh and thus ensure rapid and homogeneous mixing The reaction chamber of the machine can be heated After start-up of the kneader and commencement of mixing of the starting materials a viscous mass was immediately formed Slow kneading was then continued at a temperature of 120° C. for 30 minutes until a pulverized white solid had been obtained The powder formed Phase separation and distillation at 120° C./10 mbar

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

Procedure: The process was carried out in a high-viscosity reactor model CRP 2,5 Batch from List AG. The high-viscosity reactor is a machine having two horizontal corotating mixing shafts. Kneading devices which intermesh and thus ensure rapid and homogeneous mixing are located on the shafts. In addition, the machine has a discharge screw by means of which the product can be conveyed out of the reaction chamber. It can be operated continuously or batchwise. The reactor has a free volume of about 2.5 l. The reaction chamber of the machine can be heated. Volatile constituents can be taken off via a vent. 1336 g of diethyl adipate and 472 g of sodium ethoxide were placed in the high-viscosity reactor. After start-up of the kneader and commencement of mixing of the starting materials a viscous mass was immediately formed. While kneading slowly, the temperature was slowly increased to 120° C. A vacuum of 10 mbar was slowly built up. The temperature of 120° C. was reached after about 15 minutes. Slow kneading was then continued at a temperature of 120° C. for 30 minutes until a pulverized white solid had been obtained. The powder formed was discharged by means of a transport screw and subsequently hydrolysed using half-strength sulphuric acid. Phase separation and distillation at 120° C./10 mbar gave 1021 g of ethyl cyclopentanone-2-carboxylate, viz. about 99% of theory. Diethyl adipate could no longer be detected. The process was carried out in a high-viscosity reactor mixing shafts Kneading devices which intermesh and thus ensure rapid and homogeneous mixing The reaction chamber of the machine can be heated After start-up of the kneader and commencement of mixing of the starting materials a viscous mass was immediately formed Slow kneading was then continued at a temperature of 120° C. for 30 minutes until a pulverized white solid had been obtained The powder formed Phase separation and distillation at 120° C./10 mbar

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

Procedure: Into a 3 neck flask, equipped with water cooler, were added 43.8 mL (0.22 mol) of diethyladipate and 220 mL THF. 16.3 g (0.24 mol, 1.1 equivalents) of NaOEt were added in small portions, at 20° C., and the reaction mixture was stirred at 60° C. for 16 hours. After cooling to 20° C., 48.6 g (0.20 mol) of 2-phenyl-benzyl bromide was added dropwise. The reaction mixture was stirred at 60° C., for 16 hours, to give 2-(2-phenyl-benzyl) adipic acid diethylester as a viscous oil, in a yield of 92%. After cooling to 20° C. The reaction mixture was stirred at 60° C., for 16 hours

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

Procedure: Ethyl-2-oxocyclopentane carboxylate (3.9 gm 0.025 m) was fluorinated in a similar manner to that described in Example 1. Work up gave ethyl-2-fluoro-2-oxocyclopentane carboxylate [NMR(CDCl3); 19F, δF =-164.6 ppm (t) JHF =21.0 Hz. MS (EI); M+ 174]. Yield 56%. Also recognised in the reaction mixture was cyclopentanone [M.S. (EI); 84(M+)], unreacted starting material, and diethyl adipate [M.S. (CI); 203 (M+1)+ ]. Conversion 80%.

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

Procedure: Ethyl-2-oxocyclopentane carboxylate (3.9 gm 0.025 m) was fluorinated in a similar manner to that described in Example 1. Work up gave ethyl-2-fluoro-2-oxocyclopentane carboxylate [NMR(CDCl3); 19F, δF =-164.6 ppm (t) JHF =21.0 Hz. MS (EI); M+ 174]. Yield 56%. Also recognised in the reaction mixture was cyclopentanone [M.S. (EI); 84(M+)], unreacted starting material, and diethyl adipate [M.S. (CI); 203 (M+1)+ ]. Conversion 80%.

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

Conditions: temp:240.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Then, 29.1 g (0.199 mole) of adipic acid and 21.0 g (0.194 mole) of adiponitrile were added to the liquid distillation residue, and the resulting mixture was introduced into a 1-liter, stainless autoclave. after purging with nitrogen, the content was stirred at 240° C. for 3 hours. After cooling the reaction mixture, 138.0 g (3.000 moles) of ethanol was added and the resulting mixture was stirred at 190° C. for 3 hours. As a result of analysis, it was confirmed that 60.3 g (0.389 mole) of ethyl cyanovalerate and 1.2 g (0.006 mole) of diethyl adipate were formed. the resulting mixture was introduced into a 1-liter, stainless autoclave after purging with nitrogen was added the resulting mixture was stirred at 190° C. for 3 hours As a result of analysis, it

Conditions: temp:240.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Then, 29.1 g (0.199 mole) of adipic acid and 21.0 g (0.194 mole) of adiponitrile were added to the liquid distillation residue, and the resulting mixture was introduced into a 1-liter, stainless autoclave. after purging with nitrogen, the content was stirred at 240° C. for 3 hours. After cooling the reaction mixture, 138.0 g (3.000 moles) of ethanol was added and the resulting mixture was stirred at 190° C. for 3 hours. As a result of analysis, it was confirmed that 60.3 g (0.389 mole) of ethyl cyanovalerate and 1.2 g (0.006 mole) of diethyl adipate were formed. the resulting mixture was introduced into a 1-liter, stainless autoclave after purging with nitrogen was added the resulting mixture was stirred at 190° C. for 3 hours As a result of analysis, it

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

Procedure: Into a 3 neck flask, equipped with water cooler, were added 43.8 mL (0.22 mol) of diethyladipate and 220 mL THF. 16.3 g (0.24 mol, 1.1 equivalents) of NaOEt were added in small portions, at 20° C., and the reaction mixture was stirred at 60° C. for 16 hours. After cooling to 20° C., 48.6 g (0.20 mol) of 2-phenyl-benzyl bromide was added dropwise. The reaction mixture was stirred at 60° C., for 16 hours, to give 2-(2-phenyl-benzyl) adipic acid diethylester as a viscous oil, in a yield of 92%. After cooling to 20° C. The reaction mixture was stirred at 60° C., for 16 hours