3-Methylpiperidin-4-one hydrochloride

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

Procedure: Racemic 3-methyl-4-oxo-piperidine-1-carboxylic acid methyl ester was prepared in the same manner from racemic 3-methyl-piperidin-4-one hydrochloride and methyl chloroformate.

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

Procedure: Racemic 3-methyl-4-oxo-piperidine-1-carboxylic acid methyl ester was prepared in the same manner from racemic 3-methyl-piperidin-4-one hydrochloride and methyl chloroformate.

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

Procedure: Racemic 1-methanesulfonyl-3-methyl-piperidin-4-one was prepared in the same manner from racemic 3-methyl-piperidin-4-one hydrochloride and methanesulfonyl chloride.

Conditions: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of racemic 3-methyl-4-oxo-piperidine-1-carboxylic acid tert-butyl ester in anhydrous DCM at 0° C., ethanolic-HCl was added slowly and the reaction mixture was allowed to stir at 25° C. for 3 h. TLC (hexanes/EtOAc 40% EtOAc) showed complete consumption of the starting material. The reaction mixture was evaporated to give racemic 3-methyl-piperidin-4-one hydrochloride which was used crude in the next reaction. consumption of the starting material The reaction mixture was evaporated

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

Procedure: Racemic 3-methyl-4-oxo-piperidine-1-carboxylic acid methyl ester was prepared in the same manner from racemic 3-methyl-piperidin-4-one hydrochloride and methyl chloroformate.

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

Procedure: Racemic 1-methanesulfonyl-3-methyl-piperidin-4-one was prepared in the same manner from racemic 3-methyl-piperidin-4-one hydrochloride and methanesulfonyl chloride.

Conditions: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of racemic 3-methyl-4-oxo-piperidine-1-carboxylic acid tert-butyl ester in anhydrous DCM at 0° C., ethanolic-HCl was added slowly and the reaction mixture was allowed to stir at 25° C. for 3 h. TLC (hexanes/EtOAc 40% EtOAc) showed complete consumption of the starting material. The reaction mixture was evaporated to give racemic 3-methyl-piperidin-4-one hydrochloride which was used crude in the next reaction. consumption of the starting material The reaction mixture was evaporated