Reacción #1946557

Ecuación de reacción

dibutylamine

HCl

benzoyl chloride

potassium thiocyanate

→

product

Rendimiento 63.1%

N,N-Dibutyl-N′-benzoylthiourea

Rendimiento 63.1%

Disolventes

acetone

Condiciones de reacción

Tratamiento posterior

1. 1
   Temperaturaat reflux for 20 mins
2. 2
   workup.ADDITIONTo this mixture was added over 10 mins
3. 3
   OtroThe yellow solid precipitate was collected
4. 4
   Lavadowashed with water
5. 5
   Otrorecrystallized from isopropanol
6. 6
   OtroThe white solid was collected
7. 7
   Otrodried

Procedimiento

To a solution of 36.93 g (380 mmol) of potassium thiocyanate in 600 ml of acetone was added dropwise over 15 mins, 53.42 g (380 mmol) of benzoyl chloride. The resultant mixture was heated at reflux for 20 mins. To this mixture was added over 10 mins, 51.70 g (400 mmol) of dibutylamine. The mixture was stirred for 3 hrs and poured into a solution of 100 ml of concentrated HCl and 800 ml of ice. The yellow solid precipitate was collected, washed with water and recrystallized from isopropanol. The white solid was collected and dried to give 70.12 g of product (63.1% yield); mp: 90-93° C. The NMR spectrum was consistent with the proposed structure. Anal. Calcd. for C16H24N2OS: C, 65.7; H, 8.3; N, 9.6; S, 11.0. Found: C, 65.84; H, 8.25; N, 9.61; S, 10.7.

Fuente