(2-甲苄基)双盐酸肼

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 27.5 g of o-methylbenzylhydrazine, dissolved in 100 ml of ethanol, were added dropwise at room temperature to a solution of 32 g of β-amino-β-ethoxyacrylic acid ethyl ester and 1.5 g of p-toluenesulphonic acid in 300 ml of ethanol. After standing overnight, the reaction solution was concentrated in vacuo and the compound identified above, which separated out as a precipitate, was filtered off and recrystallised from ethanol. Melting point: 138°, 15 g (37%). the reaction solution was concentrated in vacuo separated out as a precipitate was filtered off recrystallised from ethanol

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 27.5 g of o-methylbenzylhydrazine, dissolved in 100 ml of ethanol, were added dropwise at room temperature to a solution of 32 g of β-amino-β-ethoxyacrylic acid ethyl ester and 1.5 g of p-toluenesulphonic acid in 300 ml of ethanol. After standing overnight, the reaction solution was concentrated in vacuo and the compound identified above, which separated out as a precipitate, was filtered off and recrystallised from ethanol. Melting point: 138°, 15 g (37%). the reaction solution was concentrated in vacuo separated out as a precipitate was filtered off recrystallised from ethanol

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 27.5 g of o-methylbenzylhydrazine, dissolved in 100 ml of ethanol, were added dropwise at room temperature to a solution of 32 g of β-amino-β-ethoxyacrylic acid ethyl ester and 1.5 g of p-toluenesulphonic acid in 300 ml of ethanol. After standing overnight, the reaction solution was concentrated in vacuo and the compound identified above, which separated out as a precipitate, was filtered off and recrystallised from ethanol. Melting point: 138°, 15 g (37%). the reaction solution was concentrated in vacuo separated out as a precipitate was filtered off recrystallised from ethanol

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 27.5 g of o-methylbenzylhydrazine, dissolved in 100 ml of ethanol, were added dropwise at room temperature to a solution of 32 g of β-amino-β-ethoxyacrylic acid ethyl ester and 1.5 g of p-toluenesulphonic acid in 300 ml of ethanol. After standing overnight, the reaction solution was concentrated in vacuo and the compound identified above, which separated out as a precipitate, was filtered off and recrystallised from ethanol. Melting point: 138°, 15 g (37%). the reaction solution was concentrated in vacuo separated out as a precipitate was filtered off recrystallised from ethanol

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 27.5 g of o-methylbenzylhydrazine, dissolved in 100 ml of ethanol, were added dropwise at room temperature to a solution of 32 g of β-amino-β-ethoxyacrylic acid ethyl ester and 1.5 g of p-toluenesulphonic acid in 300 ml of ethanol. After standing overnight, the reaction solution was concentrated in vacuo and the compound identified above, which separated out as a precipitate, was filtered off and recrystallised from ethanol. Melting point: 138°, 15 g (37%). the reaction solution was concentrated in vacuo separated out as a precipitate was filtered off recrystallised from ethanol

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 27.5 g of o-methylbenzylhydrazine, dissolved in 100 ml of ethanol, were added dropwise at room temperature to a solution of 32 g of β-amino-β-ethoxyacrylic acid ethyl ester and 1.5 g of p-toluenesulphonic acid in 300 ml of ethanol. After standing overnight, the reaction solution was concentrated in vacuo and the compound identified above, which separated out as a precipitate, was filtered off and recrystallised from ethanol. Melting point: 138°, 15 g (37%). the reaction solution was concentrated in vacuo separated out as a precipitate was filtered off recrystallised from ethanol