Phosgene → N-pentyl-N-phenylcarbamoyl chloride

Beteiligte Stoffe

Reaktionsschritte

A solution of 4.05 g (24.8 mmole) of N-pentylaniline (from Step A) in 45 ml of toluene and 8.96 ml (24.8 mmole) of 2.77N NaOH were mechanically stirred at -5° C., and 25.7 ml (49.6 mmole) of 1.93M phosgene in toluene was added dropwise over 30 minutes while maintaining -5°. After half the phosgene solution had been added, the rate of addition was increased easily. After stirring at -5° for an additional 30 minutes, the phases were separated and the toluene layer was dried over 10 g of solid sodium chloride. Concentration gave 5.5 g (98%) of dark yellow oil.

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