Reacción #10892

Ecuación de reacción

4-[4-(cyclopropylmethyl)-1-piperazinyl]benzenamine

thiocarbonyldiimidazole

→

1-(4-Isothiocyanatophenyl)-4-(1-cyclopropylmethyl)piperazine

Disolventes

N,N-dimethylformamide

N,N-dimethylformamide

Condiciones de reacción

Tratamiento posterior

1. 1
   workup.ADDITIONAfter the addition
2. 2
   Otrothe cooling bath was removed
3. 3
   workup.STIRRINGthe solution was stirred for 1 h
4. 4
   workup.ADDITIONIce-water (1000 mL) was added
5. 5
   workup.STIRRINGthe mixture was stirred for 30 min
6. 6
   FiltraciónThe solid was filtered off
7. 7
   Lavadowashed with water
8. 8
   Otrodried under vacuum

Procedimiento

A solution of 4-[4-(cyclopropylmethyl)-1-piperazinyl]benzenamine (3.7 g, 16 mmol) (from Step B above) in N,N-dimethylformamide (50 mL) was added dropwise over 20 min to a cooled (−15° C.) solution of thiocarbonyldiimidazole (2.87 g, 16.1 mmol) (Aldrich) in N,N-dimethylformamide (25 mL). After the addition was complete, the mixture was stirred at −15° C. for 20 min, then the cooling bath was removed and the solution was stirred for 1 h. Ice-water (1000 mL) was added and the mixture was stirred for 30 min. The solid was filtered off and washed with water and dried under vacuum. (4 g, 91%).

Fuente