Hexane → HCID 18673776, compound

HRID 2299034Notes

Reaction equation

HRID 2299034 reaction equation
C([Li])CCC.CCCCCC.Br[C:13]1[CH:18]=[CH:17][CH:16]=[C:15]([O:19][CH2:20][CH3:21])[N:14]=1.[CH2:22]([Sn:26](Cl)([CH2:31][CH2:32][CH2:33][CH3:34])[CH2:27][CH2:28][CH2:29][CH3:30])[CH2:23][CH2:24][CH3:25]>CCOCC>[CH2:20]([O:19][C:15]1[N:14]=[C:13]([Sn:26]([CH2:27][CH2:28][CH2:29][CH3:30])([CH2:31][CH2:32][CH2:33][CH3:34])[CH2:22][CH2:23][CH2:24][CH3:25])[CH:18]=[CH:17][CH:16]=1)[CH3:21]

Participants

6

Reactant 4

HCID 8058HexaneHCID 15096Tributyltin ChlorideHCID 12010182-Bromo-6-ethoxypyridineHCID 178418339Butyllithium

Product 1

HCID 18673776HCID 18673776, compoundYield 34.4%

Reagents, catalysts & solvents 1

HCID 3283Diethyl EtherSolvent

Procedure

A 2.5M solution of n-butyllithium in hexane (4.5 ml, 11.3 mmol) was added to a stirred solution of 2-bromo-6-ethoxypyridine (Rec. Trav. chim., 1965, 84, 53; 2.1 g, 11.3 mmol) in anhydrous ether (25 ml), under nitrogen, at about −40° C. After about 20 minutes, tri-n-butyltin chloride (3.1 ml, 11.4 mmol) was slowly added and, after a further 15 minutes, the reaction mixture was allowed to warm to room temperature. The resulting mixture was quenched by the addition of aqueous ammonium chloride solution, then the organic phase separated, washed with water, dried (MgSO4) and evaporated under reduced pressure. The residue was purified by flash chromatography, using an elution gradient of pentane:dichloromethane (100:0 to 80:20), to give the title compound (1.6 g, 34%) as a colourless oil. δ(CDCl3): 0.90 (t,9H), 1.08 (t,6H), 1.30-1.42 (m,9H), 1.58 (m,6H), 4.40 (q,2H), 6.53 (d,1H), 6.97 (d,1H), 7.39 (dd,1H).

Workup

  1. customThe resulting mixture was quenched by the addition of aqueous ammonium chloride solution
  2. customthe organic phase separated
  3. washwashed with water
  4. dry with materialdried (MgSO4)
  5. customevaporated under reduced pressure
  6. customThe residue was purified by flash chromatography

Sources & evidence

ORD record
ord-10064a0595f443ea92d1f483a742133a
Source dataset
uspto-grants-2002_12
Patent number
US06495568B1

Reaction notes

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