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18162-48-6872-50-4Methylene ChloridenaphthaleneTHFTitanium Dioxide
ChemicalBook CAS DataBase List S-NICOTINE-5-CARBOXALDEHYDE
852238-97-2

S-NICOTINE-5-CARBOXALDEHYDE synthesis

5synthesis methods
3-Pyridinecarboxaldehyde, 1,4-dihydro-5-[(2S)-1-methyl-2-pyrrolidinyl]-

852238-96-1
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S-NICOTINE-5-CARBOXALDEHYDE

852238-97-2
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Yield:852238-97-2 83%

Reaction Conditions:

with sulfur in toluene; for 24 h;Heating / reflux;

Steps:

8 Preparation of (S)-5-(1-methylpyrrolidin-2-yl)pyridine-3-carbaldehyde (V)

A solution of (S)-5-(1-methylpyrrolidin-2-yl)-1,4-dihydropyridine-3-carbaldehyde IV (0.011 g, 0.044 mmol) and elemental sulfur (0.0015 g, 0.044 mmol) in 2 mL of toluene was refluxed for 1 day. After filtration through a pad of Celite, and evaporation of the solvent under reduced pressure, the crude material was purified by RPLC (silica gel, 5% EtOAc/hexanes then EtOAc) to afford 0.007 g (83%) of 5-(1-methylpyrrolidin-2-yl)pyridine-3-carbaldehyde V as a clear oil. IR (thin film, neat, NaCl): 2950, 1586, 1370, 1120 cm-1. 1H NMR (CDCl3, 300 MHz) δ 10.13-10.12 (m, 1H), 8.97-8.96 (m, 1H), 8.79 (s, 1H), 8.18 (s, 1H), 3.30-3.20 (m, 2H), 2.38-1.67 (m, 4H); 3C NMR (CDCl3, 100 MHz) δ 191.26, 154.81, 150.91, 135.13, 131.69, 68.53, 57.19, 40.64, 40.64, 35.66, 23.02. HRMS Calcd for C11H14N2O: 191.1184 [M+H]+. Found: 191.1182 [M+H]+. [α]23D-92 (c=0.2, CH2Cl2).

References:

US2005/113336,2005,A1 Location in patent:Page/Page column 8; 9-10

1(4H)-Pyridinecarboxylic acid, 3-formyl-5-[(2S)-1-methyl-2-pyrrolidinyl]-, methyl ester

852238-95-0
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S-NICOTINE-5-CARBOXALDEHYDE

852238-97-2
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References
1(4H)-Pyridinecarboxylic acid, 3-[(2S)-1-methyl-2-pyrrolidinyl]-, methyl ester

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S-NICOTINE-5-CARBOXALDEHYDE

852238-97-2
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References
Pyridine, 1,4-dihydro-3-[(2S)-1-methyl-2-pyrrolidinyl]-1,4-bis(trimethylsilyl)-

852238-91-6
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S-NICOTINE-5-CARBOXALDEHYDE

852238-97-2
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References
54-11-5 Synthesis
Nicotine

54-11-5
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S-NICOTINE-5-CARBOXALDEHYDE

852238-97-2
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$140.00/25mg

References

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