反応 #2460327

反応方程式

4-(butyl)phenylbromide

sodium tert-butoxide

phenothiazine

water

→

10-(4-butylphenyl)-10H-phenothiazine

溶媒

toluene

反応条件

後処理

1. 1
   抽出extracted three times with ether (100 ml×3)
2. 2
   乾燥dried over anhydrous magnesium sulfate
3. 3
   その他The product was purified by flash column chromatography
4. 4
   その他was isolated in 81% (4.03 g)
5. 5
   その他yield as a pale yellow solid

実験手順

To a solution of tris(dibenzylideneacetone)dipalladium (Pd2(dba)3) (0.30 g, 0.33 mmol) and bis(diphenylphosphino)ferrocene (DPPF) (0.22 g, 0.40 mmol) in dry toluene (60 ml) under nitrogen atmosphere was added 4-(butyl)phenylbromide (3.21 g, 15.1 mmol) at room temperature, and the resultant mixture was stirred for 10 min., sodium tert-butoxide (4.0 g) and phenothiazine (3.0 g, 15.1 mmol) were added to this solution and stirred at 90° C. overnight under nitrogen. The reaction mixture was poured into water (80 ml), extracted three times with ether (100 ml×3) and dried over anhydrous magnesium sulfate. The product was purified by flash column chromatography using 5% ethyl acetate in hexane as eluant and was isolated in 81% (4.03 g) yield as a pale yellow solid.1H NMR (CDCl3, 500 MHz) δppm: 7.41 (d, J=7.0 Hz, 2H), 7.29 (d, J=8.0 Hz, 2H), 7.0 (dd, J=7.5 Hz, J=1.5 Hz, 2H), 6.7-6.9 (m, 4H), 6.20 (d, J=7.5 Hz, 2H), 2.72 (t, J=7.5 Hz, 2H, CH2), 1.7 (m, 2H, CH2), 1.44 (m, 2H, CH2), 0.99 (t, J=7.0 Hz, 3H, CH3).

出典