تفاعل #9885

معادلة التفاعل

(S)-nicotine

trans-1-bromo-dec-4-ene

→

(S)-trans-1-dec-4-enyl-3-(1-methyl-pyrrolidin -2-yl)-1-pyridinium bromide

المردود 74.1%

المذيبات

AcOH

ظروف التفاعل

المعالجة

1. 1
   درجة الحرارةThe mixture was heated
2. 2
   درجة الحرارةat reflux for 3 days
3. 3
   أخرىAcOH was evaporated
4. 4
   workup.DISSOLUTIONthe residue was dissolved in CHCl3
5. 5
   غسيلThe mixture was washed with saturated aqueous NaHCO3, water and brine successively
6. 6
   أخرىdried
7. 7
   أخرىEvaporation of the solvent

الإجراء التجريبي

To a stirred solution of (S)-nicotine (0.47 g, 2.9 mmol) in AcOH (15 ml) was added trans-1-bromo-dec-4-ene (1.55 g, 7.08 mmol). The mixture was heated at reflux for 3 days. AcOH was evaporated and the residue was dissolved in CHCl3. The mixture was washed with saturated aqueous NaHCO3, water and brine successively and dried. Evaporation of the solvent followed by titration with ether afforded 0.82 g (74%) of (S)-trans-1-dec-4-enyl-3-(1-methyl-pyrrolidin -2-yl)-1-pyridinium bromide (NDNB-4t) as a brown oil. 1H NMR (300 MHz, CDCl3) δ 9.71 (1H, d, J=5.7 Hz), 9.07 (1H, s), 8.40 (1H, d, J=8.1 Hz), 8.08 (1H, dd, J=8.1, 6.0 Hz), 5.42 (2H, m), 5.00 (2H, t, J=6.9 Hz), 3.54 (1H, t, J=8.4 Hz), 3.25 (1H, m), 2.44 (2H, m), 2.25 (3H, s), 1.65–2.20 (8H, m), 1.66 (1H, m), 1.15–1.40 (6H, m), 0.87 (3H, t, J=7.2 Hz); 13C NMR (75 MHz, CDCl3) δ 146.50, 144.36, 143.79, 143.13, 128.52, 127.15, 67.05, 61.49, 56.86, 40.70, 36.07, 32.67, 31.76, 31.56, 29.27, 29.07, 23.39, 22.70, 14.27; Anal. Calcd for C20H33BrN2.0.3H2O: C, 62.10; H, 8.76; N, 7.24. Found: C, 62.03; H, 8.88; N, 7.12.

المصدر