تفاعل #41281

معادلة التفاعل

Bromoethane

compound 14a

3-[(Anthracen-9-ylmethyl)-amino]-propan-1-ol

K2CO3

→

14b

المردود 82.0%

3-(Anthracen-9-ylmethyl-ethyl-amino)-propan-1-ol

المردود 82.0%

المذيبات

acetonitrile

ظروف التفاعل

المعالجة

1. 1
   تركيزAfter confirmation of the disappearance of 14a by TLC, the solution was concentrated under reduced pressure
2. 2
   workup.DISSOLUTIONThe residue was dissolved in CH2Cl2 (20 mL)
3. 3
   غسيلwashed three times with aqueous sodium carbonate
4. 4
   أخرىThe organic layer was separated
5. 5
   تجفيفdried with anhydrous Na2SO4
6. 6
   ترشيحfiltered
7. 7
   تركيزconcentrated under vacuum

الإجراء التجريبي

Bromoethane (616 mg, 5.65 mmol) was dissolved in anhydrous acetonitrile and was added to the stirring mixture of compound 14a (500 mg, 1.9 mmol) and anhydrous K2CO3 (781 mg, 5.7 mmol). The mixture was then stirred overnight at 75° C. under a N2 atmosphere. After confirmation of the disappearance of 14a by TLC, the solution was concentrated under reduced pressure. The residue was dissolved in CH2Cl2 (20 mL) and washed three times with aqueous sodium carbonate. The organic layer was separated, dried with anhydrous Na2SO4, filtered and concentrated under vacuum. Flash column chromatography of the residue gave 14b as a light yellow oil. Yield 82%; Rf=0.35 (3% MeOH/CHCl3); 1H NMR (CDCl3) δ 8.28 (m, 3H), 7.86 (d, 2H), 7.44 (m, 2H), 7.36 (m, 2H), 4.29 (s, 2H), 3.15 (t, 2H), 2.65 (q, 2H), 2.52 (t, 2H), 1.43 (q, 2H), 1.16 (t, 3H); 13C NMR (CDCl3) δ 131.2, 131.1, 129.3, 129.0, 127.6, 125.8, 124.8, 124.4, 63.4, 52.6, 50.5, 47.7, 28.1, 11.6. HRMS (FAB) m/z calcd. for C20H23NO (M+H)+ 294.1852; found 294.1859.

المصدر