tert-butyl (2S)-2-carbamoylpyrrolidine-1-carboxylate

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

Procedure: To (S)-tert-butyl 2-carbamoylpyrrolidine-1-carboxylate (29.8 g, 139 mmol) was added a solution of 4N HCl in dioxane (209 mL, 836 mmol) and the resultant mixture stirred at room temperature for 18 hrs. The mixture was then concentrated and triturated with diethyl ether then vacuum filtered and dried under vacuum to provide 21.6 g (104%) of the title product as a colorless solid. The mixture was then concentrated triturated with diethyl ether vacuum filtered dried under vacuum

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

Procedure: To (S)-tert-butyl 2-carbamoylpyrrolidine-1-carboxylate (29.8 g, 139 mmol) was added a solution of 4N HCl in dioxane (209 mL, 836 mmol) and the resultant mixture stirred at room temperature for 18 hrs. The mixture was then concentrated and triturated with diethyl ether then vacuum filtered and dried under vacuum to provide 21.6 g (104%) of the title product as a colorless solid. The mixture was then concentrated triturated with diethyl ether vacuum filtered dried under vacuum

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

Procedure: To (S)-tert-butyl 2-carbamoylpyrrolidine-1-carboxylate (29.8 g, 139 mmol) was added a solution of 4N HCl in dioxane (209 mL, 836 mmol) and the resultant mixture stirred at room temperature for 18 hrs. The mixture was then concentrated and triturated with diethyl ether then vacuum filtered and dried under vacuum to provide 21.6 g (104%) of the title product as a colorless solid. The mixture was then concentrated triturated with diethyl ether vacuum filtered dried under vacuum

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A round-bottomed flask with (S)-tert-butyl 2-carbamoylpyrrolidine-1-carboxylate (compound 10a, 3.0 g, 14.0 mmol) and Lawesson's reagent (6.8 g, 16.8 mmol) was flushed with nitrogen. Dry THF (40 ml) was added as the solvent. The reaction mixture was stirred at 70° C. under nitrogen for 8 hours. After cooled to room temperature, the resulting mixture was evaporated under reduced pressure and purified by column chromatography (ethyl acetate:n-hexane=1:2) to yield pure product 11a (2.7 g). After cooled to room temperature the resulting mixture was evaporated under reduced pressure purified by column chromatography (ethyl acetate:n-hexane=1:2)

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

Procedure: To (S)-tert-butyl 2-carbamoylpyrrolidine-1-carboxylate (29.8 g, 139 mmol) was added a solution of 4N HCl in dioxane (209 mL, 836 mmol) and the resultant mixture stirred at room temperature for 18 hrs. The mixture was then concentrated and triturated with diethyl ether then vacuum filtered and dried under vacuum to provide 21.6 g (104%) of the title product as a colorless solid. The mixture was then concentrated triturated with diethyl ether vacuum filtered dried under vacuum

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

Procedure: To (S)-tert-butyl 2-carbamoylpyrrolidine-1-carboxylate (29.8 g, 139 mmol) was added a solution of 4 N HCl in dioxane (209 mL, 836 mmol), and the resultant mixture was stirred at room temperature for 18 hours. The mixture was then concentrated and triturated with diethyl ether then vacuum filtered and dried under vacuum to provide 21.6 g (104%) of the title product as a colorless solid. The mixture was then concentrated triturated with diethyl ether vacuum filtered dried under vacuum

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

Procedure: To (S)-tert-butyl 2-carbamoylpyrrolidine-1-carboxylate (29.8 g, 139 mmol) was added a solution of 4 N HCl in dioxane (209 mL, 836 mmol), and the resultant mixture was stirred at room temperature for 18 hours. The mixture was then concentrated and triturated with diethyl ether then vacuum filtered and dried under vacuum to provide 21.6 g (104%) of the title product as a colorless solid. The mixture was then concentrated triturated with diethyl ether vacuum filtered dried under vacuum