반응 #1946557

반응 방정식

dibutylamine

HCl

benzoyl chloride

potassium thiocyanate

→

product

수율 63.1%

N,N-Dibutyl-N′-benzoylthiourea

수율 63.1%

용매

acetone

반응 조건

후처리

1. 1
   온도at reflux for 20 mins
2. 2
   workup.ADDITIONTo this mixture was added over 10 mins
3. 3
   기타The yellow solid precipitate was collected
4. 4
   세척washed with water
5. 5
   기타recrystallized from isopropanol
6. 6
   기타The white solid was collected
7. 7
   기타dried

실험 절차

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.

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