tert-butyl N-[(3S)-1-methyl-2-oxopiperidin-3-yl]carbamate

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

Procedure: (S)-tert-Butyl 1-methyl-2-oxopiperidin-3-ylcarbamate (prepared according to Example 12; 78 mg, 0.34 mmol) was dissolved in 4M hydrogen chloride in dioxane (1.7 mL, 6.8 mmol), and the reaction was allowed to stir at ambient temperature for 16 hours. The reaction mixture was concentrated to yield (S)-3-amino-1-methylpiperidin-2-one hydrochloride (56 mg, 100%), which was taken on to the next step without further purification. The reaction mixture was concentrated

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

Procedure: (S)-tert-butyl 1-methyl-2-oxopiperidin-3-ylcarbamate was prepared from (S)-tert-butyl 2-oxopiperidin-3-ylcarbamate (Example 7) and methyl iodide according to the general procedure of Example 9. The crude product was purified by column chromatography, eluting with 100% ethyl acetate, to provide compound (2c) in 31% yield. The crude product was purified by column chromatography eluting with 100% ethyl acetate

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

Procedure: (S)-tert-butyl 1-methyl-2-oxopiperidin-3-ylcarbamate was prepared from (S)-tert-butyl 2-oxopiperidin-3-ylcarbamate (Example 7) and methyl iodide according to the general procedure of Example 9. The crude product was purified by column chromatography, eluting with 100% ethyl acetate, to provide compound (2c) in 31% yield. The crude product was purified by column chromatography eluting with 100% ethyl acetate

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

Procedure: (S)-tert-Butyl 1-methyl-2-oxopiperidin-3-ylcarbamate (prepared according to Example 12; 78 mg, 0.34 mmol) was dissolved in 4M hydrogen chloride in dioxane (1.7 mL, 6.8 mmol), and the reaction was allowed to stir at ambient temperature for 16 hours. The reaction mixture was concentrated to yield (S)-3-amino-1-methylpiperidin-2-one hydrochloride (56 mg, 100%), which was taken on to the next step without further purification. The reaction mixture was concentrated

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

Procedure: (S)-tert-butyl 1-methyl-2-oxopiperidin-3-ylcarbamate was prepared from (S)-tert-butyl 2-oxopiperidin-3-ylcarbamate (Example 7) and methyl iodide according to the general procedure of Example 9. The crude product was purified by column chromatography, eluting with 100% ethyl acetate, to provide compound (2c) in 31% yield. The crude product was purified by column chromatography eluting with 100% ethyl acetate