反応 #1946557

反応方程式

dibutylamine

HCl

benzoyl chloride

potassium thiocyanate

→

product

収率 63.1%

N,N-Dibutyl-N′-benzoylthiourea

収率 63.1%

溶媒

acetone

反応条件

後処理

1. 1
   温度at reflux for 20 mins
2. 2
   workup.ADDITIONTo this mixture was added over 10 mins
3. 3
   その他The yellow solid precipitate was collected
4. 4
   洗浄washed with water
5. 5
   その他recrystallized from isopropanol
6. 6
   その他The white solid was collected
7. 7
   その他dried

実験手順

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.

出典