(2,5-dioxopyrrolidin-1-yl) 3-acetylsulfanylpropanoate

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

Procedure: 16.2 g (0.1 mol) S-acetyl-mercaptopropionic acid, 12.7 g (0.11 mol) N-hydroxysuccinimide and 22.7 g (0.11 mol) dicyclohexylcarbodiimide are stirred in 0.4 l absolute ethyl acetate for 16 hours at 20° C. The precipitate which forms is filtered off and the filtrate is evaporated in a vacuum. The oily residue is taken up in a small amount of ethyl acetate and cooled. In this process further precipitate is formed which is discarded. This process is repeated twice. 13 g (50%) SATP is obtained from the last filtrate after evaporation. The precipitate which forms is filtered off the filtrate is evaporated in a vacuum cooled In this process further precipitate is formed which

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

Procedure: 16.2 g (0.1 mol) S-acetyl-mercaptopropionic acid, 12.7 g (0.11 mol) N-hydroxysuccinimide and 22.7 g (0.11 mol) dicyclohexylcarbodiimide are stirred in 0.4 l absolute ethyl acetate for 16 hours at 20° C. The precipitate which forms is filtered off and the filtrate is evaporated in a vacuum. The oily residue is taken up in a small amount of ethyl acetate and cooled. In this process further precipitate is formed which is discarded. This process is repeated twice. 13 g (50%) SATP is obtained from the last filtrate after evaporation. The precipitate which forms is filtered off the filtrate is evaporated in a vacuum cooled In this process further precipitate is formed which

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

Procedure: 16.2 g (0.1 mol) S-acetyl-mercaptopropionic acid, 12.7 g (0.11 mol) N-hydroxysuccinimide and 22.7 g (0.11 mol) dicyclohexylcarbodiimide are stirred in 0.4 l absolute ethyl acetate for 16 hours at 20° C. The precipitate which forms is filtered off and the filtrate is evaporated in a vacuum. The oily residue is taken up in a small amount of ethyl acetate and cooled. In this process further precipitate is formed which is discarded. This process is repeated twice. 13 g (50%) SATP is obtained from the last filtrate after evaporation. The precipitate which forms is filtered off the filtrate is evaporated in a vacuum cooled In this process further precipitate is formed which