L-Tryptophan → Tryptophan butyl ester

Participants

Reaction Conditions

Reaction Steps

L-Tryptophane (5 g; 24.5 mmol) and thionyl chloride (73.5 mmol; 5.3 ml) were dissolved in n-butanol (80 ml) and stirred at 100° C. over night. The product 5 precipitated after cooling to room temperature, was filtered off and washed with ice cold butanol and petrol ether. The product was dried at the oil pump, yielding 5.8 g of 5 (91%).

Provenance & Evidence