Methyl 4-aminobenzoate → Methyl 4-hydrazinylbenzoate

Participants

Reaction Steps

Methyl 4-aminobenzoate (5.0 g, 0.0331 moles) was taken up in cone. HCl (50 mL) and cooled to 0° C. Sodium nitrite (2.5 g, 0.0331 moles) solution in water was added at 0° C. over 30 minutes and stirred at RT for 90 min. Tin chloride (19.40 g, 0.0927 moles) in HCl (100 mL) was added drop wise at 0° C. and stirred at RT for 2 hr. The reaction was filtered and the solid obtained was washed with diethyl ether and dried on a rotary evaporator to give 6.2 g, 92.53% yield of Methyl 4-hydrazinylbenzoate as a white solid.

Provenance & Evidence