(3-bromophenyl)methylhydrazine

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

Procedure: 20.5 g of β-amino-β-ethoxyacrylic acid ethyl ester together with 1.5 g of p-toluenesulphonic acid were dissolved in 200 ml of ethanol. 26 g of m-bromobenzylhydrazine were added dropwise to this solution, under nitrogen. After stirring for 2 hours, the mixture was left to stand overnight and the compound identified above, which had separated out as a precipitate, was filtered off and recrystallised from ethanol. Melting Point: 160°, 12 g (35%). the mixture was left to stand overnight had separated out as a precipitate was filtered off recrystallised from ethanol

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

Procedure: 20.5 g of β-amino-β-ethoxyacrylic acid ethyl ester together with 1.5 g of p-toluenesulphonic acid were dissolved in 200 ml of ethanol. 26 g of m-bromobenzylhydrazine were added dropwise to this solution, under nitrogen. After stirring for 2 hours, the mixture was left to stand overnight and the compound identified above, which had separated out as a precipitate, was filtered off and recrystallised from ethanol. Melting Point: 160°, 12 g (35%). the mixture was left to stand overnight had separated out as a precipitate was filtered off recrystallised from ethanol

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

Procedure: 20.5 g of β-amino-β-ethoxyacrylic acid ethyl ester together with 1.5 g of p-toluenesulphonic acid were dissolved in 200 ml of ethanol. 26 g of m-bromobenzylhydrazine were added dropwise to this solution, under nitrogen. After stirring for two hours, the mixture was left to stand overnight and the compound identified above, which had separated out as a precipitate, was filtered off and recrystallised from ethanol. Melting Point: 160°, 12 g (35%). the mixture was left to stand overnight had separated out as a precipitate was filtered off recrystallised from ethanol

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

Procedure: 20.5 g of β-amino-β-ethoxyacrylic acid ethyl ester together with 1.5 g of p-toluenesulphonic acid were dissolved in 200 ml of ethanol. 26 g of m-bromobenzylhydrazine were added dropwise to this solution, under nitrogen. After stirring for 2 hours, the mixture was left to stand overnight and the compound identified above, which had separated out as a precipitate, was filtered off and recrystallised from ethanol. Melting Point: 160°, 12 g (35%). the mixture was left to stand overnight had separated out as a precipitate was filtered off recrystallised from ethanol

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

Procedure: 20.5 g of β-amino-β-ethoxyacrylic acid ethyl ester together with 1.5 g of p-toluenesulphonic acid were dissolved in 200 ml of ethanol. 26 g of m-bromobenzylhydrazine were added dropwise to this solution, under nitrogen. After stirring for 2 hours, the mixture was left to stand overnight and the compound identified above, which had separated out as a precipitate, was filtered off and recrystallised from ethanol. Melting Point: 160°, 12 g (35%). the mixture was left to stand overnight had separated out as a precipitate was filtered off recrystallised from ethanol

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

Procedure: 20.5 g of β-amino-β-ethoxyacrylic acid ethyl ester together with 1.5 g of p-toluenesulphonic acid were dissolved in 200 ml of ethanol. 26 g of m-bromobenzylhydrazine were added dropwise to this solution, under nitrogen. After stirring for two hours, the mixture was left to stand overnight and the compound identified above, which had separated out as a precipitate, was filtered off and recrystallised from ethanol. Melting Point: 160°, 12 g (35%). the mixture was left to stand overnight had separated out as a precipitate was filtered off recrystallised from ethanol