3,3-dimethyl-4-phenylbutanal

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

Procedure: To a stirred suspension of 3,3-dimethyl-4-phenyl-butyraldehyde (2.46 g; CAS 15674-36-9) at r.t. in ethanol (25 ml) under an argon atmosphere were added H2O (25 ml), ammonium carbonate (6.71 g) and NaCN (0.82 g). The mixture was heated to 60° C. (internal temperature), and stirring was continued for 17 h. The mixture was cooled to 0° C. The reactor was equiped with a 4 N NaOH trap in order to trap the evolving HCN. 3 N HCl (25 ml) was added dropwise for 10 min (temperature of the reaction mixture not over 9° C. during the addition). When addition was complete, a stream of air was passed through the reaction mixture (still kept in an ice bath) for 30 min in order to ensure complete removal of HCN. The product was collected by filtration, washed with plenty of H2O and cyclohexane and dried to give (RS)-5-(2,2-dimethyl-3-phenyl-propyl)-imidazolidine-2,4-dione (2.05 g) as off-white powder. MS (ISN): 245.2 ([M−H]−)) The mixture was cooled to 0° C during the addition) When addition still kept in an ice bath ) for 30 min in order to ensure complete removal of HCN The product was collected by filtration washed with plenty of H2O and cyclohexane dried

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

Procedure: To a stirred suspension of 3,3-dimethyl-4-phenyl-butyraldehyde (2.46 g; CAS 15674-36-9) at r.t. in ethanol (25 ml) under an argon atmosphere were added H2O (25 ml), ammonium carbonate (6.71 g) and NaCN (0.82 g). The mixture was heated to 60° C. (internal temperature), and stirring was continued for 17 h. The mixture was cooled to 0° C. The reactor was equipped with a 4 N NaOH trap in order to trap the evolving HCN. 3 N HCl (25 ml) was added dropwise for 10 min (temperature of the reaction mixture not over 9° C. during the addition). When addition was complete, a stream of air was passed through the reaction mixture (still kept in an ice bath) for 30 min in order to ensure complete removal of HCN. The product was collected by filtration, washed with plenty of H2O and cyclohexane and dried to give (RS)-5-(2,2-dimethyl-3-phenyl-propyl)-imidazolidine-2,4-dione (2.05 g) as off-white powder. MS (ISN): 245.2 ([M−H]−)) The mixture was cooled to 0° C during the addition) When addition still kept in an ice bath ) for 30 min in order to ensure complete removal of HCN The product was collected by filtration washed with plenty of H2O and cyclohexane dried

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

Procedure: To a stirred suspension of 3,3-dimethyl-4-phenyl-butyraldehyde (2.46 g; CAS 15674-36-9) at r.t. in ethanol (25 ml) under an argon atmosphere were added H2O (25 ml), ammonium carbonate (6.71 g) and NaCN (0.82 g). The mixture was heated to 60° C. (internal temperature), and stirring was continued for 17 h. The mixture was cooled to 0° C. The reactor was equiped with a 4 N NaOH trap in order to trap the evolving HCN. 3 N HCl (25 ml) was added dropwise for 10 min (temperature of the reaction mixture not over 9° C. during the addition). When addition was complete, a stream of air was passed through the reaction mixture (still kept in an ice bath) for 30 min in order to ensure complete removal of HCN. The product was collected by filtration, washed with plenty of H2O and cyclohexane and dried to give (RS)-5-(2,2-dimethyl-3-phenyl-propyl)-imidazolidine-2,4-dione (2.05 g) as off-white powder. MS (ISN): 245.2 ([M−H]−)) The mixture was cooled to 0° C during the addition) When addition still kept in an ice bath ) for 30 min in order to ensure complete removal of HCN The product was collected by filtration washed with plenty of H2O and cyclohexane dried

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

Procedure: 1-[4′-(4-Bromo-3-methyl-isoxazol-5-yl)-biphenyl-4-yl]-cyclopropanecarboxylic acid ethyl ester (0.100 g, 0.243 mmol) was dissolved in THF (0.25M) and cooled to −78° C. n-Butyllithium (2.5M in hexanes, 0.1068 mL, 0.267 mmol) was slowly added and the reaction stirred for 30 minutes. 3,3-Dimethyl-4-phenyl-butyraldehyde (0.047 g, 0.254 mmol) was added and the reaction was stirred at −78° C. for 30 minutes then warmed to room temperature and continued stirring for 1 hour. The reaction mixture was submitted to standard aqueous workup to afford the title compound, which was used in the next step without further purification. was slowly added the reaction was stirred at −78° C. for 30 minutes continued stirring for 1 hour

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

Procedure: 1-[4′-(4-Bromo-3-methyl-isoxazol-5-yl)-biphenyl-4-yl]-cyclopropanecarboxylic acid ethyl ester (0.100 g, 0.243 mmol) was dissolved in THF (0.25M) and cooled to −78° C. n-Butyllithium (2.5M in hexanes, 0.1068 mL, 0.267 mmol) was slowly added and the reaction stirred for 30 minutes. 3,3-Dimethyl-4-phenyl-butyraldehyde (0.047 g, 0.254 mmol) was added and the reaction was stirred at −78° C. for 30 minutes then warmed to room temperature and continued stirring for 1 hour. The reaction mixture was submitted to standard aqueous workup to afford the title compound, which was used in the next step without further purification. was slowly added the reaction was stirred at −78° C. for 30 minutes continued stirring for 1 hour

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

Procedure: To a stirred suspension of 3,3-dimethyl-4-phenyl-butyraldehyde (2.46 g; CAS 15674-36-9) at r.t. in ethanol (25 ml) under an argon atmosphere were added H2O (25 ml), ammonium carbonate (6.71 g) and NaCN (0.82 g). The mixture was heated to 60° C. (internal temperature), and stirring was continued for 17 h. The mixture was cooled to 0° C. The reactor was equiped with a 4 N NaOH trap in order to trap the evolving HCN. 3 N HCl (25 ml) was added dropwise for 10 min (temperature of the reaction mixture not over 9° C. during the addition). When addition was complete, a stream of air was passed through the reaction mixture (still kept in an ice bath) for 30 min in order to ensure complete removal of HCN. The product was collected by filtration, washed with plenty of H2O and cyclohexane and dried to give (RS)-5-(2,2-dimethyl-3-phenyl-propyl)-imidazolidine-2,4-dione (2.05 g) as off-white powder. MS (ISN): 245.2 ([M−H]−)) The mixture was cooled to 0° C during the addition) When addition still kept in an ice bath ) for 30 min in order to ensure complete removal of HCN The product was collected by filtration washed with plenty of H2O and cyclohexane dried

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

Procedure: To a stirred suspension of 3,3-dimethyl-4-phenyl-butyraldehyde (2.46 g; CAS 15674-36-9) at r.t. in ethanol (25 ml) under an argon atmosphere were added H2O (25 ml), ammonium carbonate (6.71 g) and NaCN (0.82 g). The mixture was heated to 60° C. (internal temperature), and stirring was continued for 17 h. The mixture was cooled to 0° C. The reactor was equipped with a 4 N NaOH trap in order to trap the evolving HCN. 3 N HCl (25 ml) was added dropwise for 10 min (temperature of the reaction mixture not over 9° C. during the addition). When addition was complete, a stream of air was passed through the reaction mixture (still kept in an ice bath) for 30 min in order to ensure complete removal of HCN. The product was collected by filtration, washed with plenty of H2O and cyclohexane and dried to give (RS)-5-(2,2-dimethyl-3-phenyl-propyl)-imidazolidine-2,4-dione (2.05 g) as off-white powder. MS (ISN): 245.2 ([M−H]−)) The mixture was cooled to 0° C during the addition) When addition still kept in an ice bath ) for 30 min in order to ensure complete removal of HCN The product was collected by filtration washed with plenty of H2O and cyclohexane dried