Benzyl isocyanate → ethyl 2-(1-Methyl-2-(benzylcarbamoyl)hydrazinyl)acetate

Participants

Reaction Steps

To a solution of ethyl 2-(1-methylhydrazinyl)acetate (Compound XL-1) 10 ml (76 mmol) in tetrahydrofuran 40 ml, benzyl isocyanate 11.1 g (83.3 mmol) was added at 0° C. and the mixture was stirred at room temperature overnight. The reaction mixture was diluted with ethyl acetate 150 ml and washed with water 75 ml and brine 75 ml. The organic phase was dried over magnesium sulfate and filtered. The filtrate was concentrated in vacuo to obtain the title compound 15.2 g (76%).

Provenance & Evidence