反応 #88143

反応方程式

HCl

N-((2-cyclopropylphenyl)carbamothioyl)benzamide

NaOH

→

1-(2-cyclopropylphenyl)thiourea

収率 56.7%

溶媒

MeOH

反応条件

後処理

1. 1
   温度The reaction was cooled
2. 2
   その他was evaporated under a stream of nitrogen
3. 3
   その他A yellow precipitate formed
4. 4
   ろ過that was filtered
5. 5
   洗浄rinsed with water
6. 6
   その他dried in the vacuum oven

実験手順

To N-((2-cyclopropylphenyl)carbamothioyl)benzamide (1.210 g, 4.08 mmol) in MeOH (10 mL) was added 2 N NaOH (4.1 mL, 8.17 mmol) and stirred at 65° C. for 3 hours. The reaction was cooled, neutralized with 2 N HCl, and half of the reaction volume was evaporated under a stream of nitrogen. A yellow precipitate formed that was filtered, rinsed with water and dried in the vacuum oven to give 1-(2-cyclopropylphenyl)thiourea as a yellow solid (444.5 mg, 56%): mp 152-154° C.; 1H NMR (400 MHz, CDCl3) δ 7.75 (s, 1H), 7.31-7.27 (m, 1H), 7.26-7.22 (m, 2H), 7.00 (d, J=7.4 Hz, 1H), 5.95 (s, 2H), 1.99 (tt, J=8.4, 5.3 Hz, 1H), 1.06 (ddd, J=8.4, 6.3, 4.5 Hz, 2H), 0.69 (dt, J=6.4, 4.6 Hz, 2H); 13C NMR (101 MHz, CDCl3) δ 182.10, 140.33, 135.18, 128.81, 126.96, 126.45, 126.04, 10.95, 8.39; ESIMS m/z 193 ([M+H]+).

出典