Reacción #4317

Ecuación de reacción

N-[2-(phenylsulfonyl)ethyl]-2-propanamine

1,1'-carbonyl diimidazole

1-diethylamino-2-propanamine

→

clear colorless oil

Rendimiento 59.5%

N'-[2-(Diethylamino)-1-methylethyl]-N-(1-methylethyl)-N-[2-(phenylsulfonyl)ethyl]urea

Rendimiento 59.5%

Disolventes

tetrahydrofuran

tetrahydrofuran

Condiciones de reacción

Tratamiento posterior

1. 1
   Temperaturathe solution was refluxed for 19 hr
2. 2
   OtroThe solvent was removed in vacuo
3. 3
   workup.DISSOLUTIONthe residue was dissolved in a 50/50 mixture of methylene chloride and ether
4. 4
   ExtracciónThe organic solution was extracted with several portions of water
5. 5
   Secadowas dried over magnesium sulfate
6. 6
   OtroThe solvent was removed in vacuo
7. 7
   Otroto give an oil

Procedimiento

A mixture of 12.15 g (0.075 mole) of 1,1'-carbonyl diimidazole and 7.50 g (0.0476 mole) of 1-diethylamino-2-propanamine in 400 ml of tetrahydrofuran was stirred at room temperature for 1 hr. A solution of 12.26 g (0.054 mole) of N-[2-(phenylsulfonyl)ethyl]-2-propanamine in 50 ml of tetrahydrofuran was added, and the solution was refluxed for 19 hr. The solvent was removed in vacuo, and the residue was dissolved in a 50/50 mixture of methylene chloride and ether. The organic solution was extracted with several portions of water and was dried over magnesium sulfate. The solvent was removed in vacuo to give an oil. Flash chromatography on silica gel (elution with methanol) gave 10.87 g (52.3 g) of clear colorless oil.

Fuente