Réaction #1552068

Équation de réaction

1,1,1,3,3,3-hexafluoro-2-(2-(methyl(phenyl)amino)phenyl)propan-2-ol

→

desired compound

Rendement 80.0%

10-methyl-9,9-bis(trifluoromethyl)-9,10-dihydroacridine

Rendement 80.0%

Solvants

POCl3

Conditions de réaction

Traitement

1. 1
   Températurethe solution refluxed under argon for 3 d
2. 2
   workup.DISTILLATIONExcess POCl3 was distilled off
3. 3
   workup.DISTILLATIONa short path distillation head
4. 4
   workup.DISSOLUTIONthe residue was dissolved in CHCl3
5. 5
   workup.ADDITIONpoured into a 10% (v/v) aqueous ammoniacal solution
6. 6
   AutreThe organic layer was separated
7. 7
   Extractionthe aqueous layer extracted with Et2O (3×50 mL)
8. 8
   Lavagewashed with brine and water
9. 9
   Séchagedried over MgSO4
10. 10
    Autrethe solvent evaporated under reduced pressure
11. 11
    AutreThe residue was purified by flash column chromatography

Mode opératoire

1,1,1,3,3,3-hexafluoro-2-(2-(methyl(phenyl)amino)phenyl)propan-2-ol (0.2 g, 0.57 mmol) was dissolved in 15 mL POCl3 and the solution refluxed under argon for 3 d. Excess POCl3 was distilled off using a short path distillation head, the residue was dissolved in CHCl3, poured into a 10% (v/v) aqueous ammoniacal solution and the biphasic system stirred at room temperature for one hour. The organic layer was separated and the aqueous layer extracted with Et2O (3×50 mL). The organic layers were combined, washed with brine and water and dried over MgSO4, and the solvent evaporated under reduced pressure. The residue was purified by flash column chromatography using 10% dichloromethane in hexanes as the eluent to yield 0.15 g (80%) of the desired compound as a light-blue oil. 1H NMR (400 MHz, CHCl3) δ 3.46 (s, 3H), 7.00 (m, 4H), 7.42 (m, 2H), 7.89 (m, 2H). 13C NMR (100 MHz, CHCl3) δ 29.8, 35.1, 111.8, 114.7, 120.3, 130.3 (quintet), 130.7, 141.8. 19F NMR (380 MHz, CHCl3) δ −65.9. HRMS (EI) calc for C16H11F6N [M]+ 332.0868, found 332.0874. IR (KBr plate) 479 (m), 693 (s), 709 (s), 758 (s), 848 (m), 954 (s), 1116 (s), 1163 (m), 1192 (s), 1260 (s), 1489 (s), 1573 (m), 1594 (m), 2840 (m), 2972 (m), 3054 (m) cm−1.

Source