Sodium Iodide → methyl 1-(10,11-dihydro5H-dibenzo[a,d][7]annulen-5-yl)-1,2,5,6-tetrahydropyridine-3-carboxylate

HRID 736790

Reaction equation

HRID 736790 reaction equation
Cl.[NH:2]1[CH2:7][CH2:6][CH:5]=[C:4]([C:8]([O:10][CH3:11])=[O:9])[CH2:3]1.[CH2:12]1[C:26]2[C:21](=[CH:22][CH:23]=[CH:24][CH:25]=2)[CH:20](Cl)[C:19]2[C:14](=[CH:15][CH:16]=[CH:17][CH:18]=2)[CH2:13]1.[I-].[Na+].C(N(CC)CC)C>O1CCOCC1>[CH:15]1[C:14]2[CH2:13][CH2:12][C:26]3[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=3[CH:20]([N:2]3[CH2:7][CH2:6][CH:5]=[C:4]([C:8]([O:10][CH3:11])=[O:9])[CH2:3]3)[C:19]=2[CH:18]=[CH:17][CH:16]=1

Participants

6

Reactant 4

HCID 5238Sodium IodideHCID 8471TriethylamineHCID 145875H-Dibenzo(a,d)cycloheptene, 10,11-dihydro-5-chloro-HCID 201540Norarecoline Hydrochloride

Product 1

HCID 68816682methyl 1-(10,11-dihydro5H-dibenzo[a,d][7]annulen-5-yl)-1,2,5,6-tetrahydropyridine-3-carboxylateYield 55%

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent

Conditions

Temperature
90 °C

Procedure

A mixture of methyl 1,2,5,6-tetrahydropyridine-3-carboxylate hydrochloride (crude, 150 mmol), 5-chlorodibenzosuberane (41 g, 180 mmol, 1.2 eq), sodium iodide (2.2 g, 15 mmol, 0.1 eq) and triethylamine (63 mL, 450 mmol, 3.0 eq) in dioxane (300 mL) was stirred at 90° C. overnight. The reaction mixture was concentrated in vacuo and the residue was partitioned between ethyl acetate and water. The organic phase was washed with brine, dried over MgSO4, and concentrated. The crude product was passed through a silica gel plug, eluting with CH2Cl2. After concentration, the resulting solid was triturated with ether to yield 27 g (55%) of methyl 1-(10,11-dihydro5H-dibenzo[a,d][7]annulen-5-yl)-1,2,5,6-tetrahydropyridine-3-carboxylate.

Workup

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. customthe residue was partitioned between ethyl acetate and water
  3. washThe organic phase was washed with brine
  4. dry with materialdried over MgSO4
  5. concentrationconcentrated
  6. washeluting with CH2Cl2
  7. concentrationAfter concentration
  8. customthe resulting solid was triturated with ether

Sources & evidence

ORD record
ord-7faa392ab5ba428d8d9d7037bc35f0ee
Source dataset
uspto-grants-2009_09
Patent number
US07595327B2

Linked notes

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