Réaction #9885

Équation de réaction

(S)-nicotine

trans-1-bromo-dec-4-ene

→

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

Rendement 74.1%

Solvants

AcOH

Conditions de réaction

Traitement

1. 1
   TempératureThe mixture was heated
2. 2
   Températureat reflux for 3 days
3. 3
   AutreAcOH was evaporated
4. 4
   workup.DISSOLUTIONthe residue was dissolved in CHCl3
5. 5
   LavageThe mixture was washed with saturated aqueous NaHCO3, water and brine successively
6. 6
   Autredried
7. 7
   AutreEvaporation of the solvent

Mode opératoire

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.

Source