Triethylamine → 5-[4-(4-Methoxybenzoyl)benzoyl]-4,5,6,7-tetrahydrofuro[3,2-c]pyridine

HRID 611261Notes

Reaction equation

HRID 611261 reaction equation
Cl.[O:2]1[C:10]2[CH2:9][CH2:8][NH:7][CH2:6][C:5]=2[CH:4]=[CH:3]1.[CH3:11][O:12][C:13]1[CH:29]=[CH:28][C:16]([C:17]([C:19]2[CH:27]=[CH:26][C:22]([C:23](O)=[O:24])=[CH:21][CH:20]=2)=[O:18])=[CH:15][CH:14]=1.C(N(CC)CC)C.C(P(=O)(OCC)OCC)#N>ClCCl.O>[CH3:11][O:12][C:13]1[CH:29]=[CH:28][C:16]([C:17]([C:19]2[CH:27]=[CH:26][C:22]([C:23]([N:7]3[CH2:8][CH2:9][C:10]4[O:2][CH:3]=[CH:4][C:5]=4[CH2:6]3)=[O:24])=[CH:21][CH:20]=2)=[O:18])=[CH:15][CH:14]=1

Participants

7

Reactant 4

HCID 8471TriethylamineHCID 76257Diethyl cyanophosphonateHCID 177891814-(4-Methoxybenzoyl)benzoic acidHCID 195999414,5,6,7-Tetrahydrofuro[3,2-c]pyridine hydrochloride

Product 1

HCID 196002365-[4-(4-Methoxybenzoyl)benzoyl]-4,5,6,7-tetrahydrofuro[3,2-c]pyridine

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6344DichloromethaneSolvent

Procedure

To a solution of 0.160 g (1.000 mmol) of 4,5,6,7-tetrahydrofuro[3,2-c]pyridine hydrochloride, 0.308 g (1.2 mmol) of 4-(4-methoxybenzoyl)benzoic acid and 0.55 ml (4.0 mmol) of triethylamine in 30 ml of dichloromethane, 0.24 g (1.5 mmol) of diethyl cyanophosphonate was added dropwise under ice-cooling, followed by overnight stirring at room temperature. The reaction mixture was poured into water and extracted with dichloromethane 2 times. The combined organic layer was washed with water and dried over anhydrous magnesium sulfate; the solvent was distilled off under reduced pressure. The resulting crude product was purified by silica gel column chromatography (hexane/ethyl acetate=2/1) to yield the desired product.

Workup

  1. temperaturecooling
  2. extractionextracted with dichloromethane 2 times
  3. washThe combined organic layer was washed with water
  4. dry with materialdried over anhydrous magnesium sulfate
  5. distillationthe solvent was distilled off under reduced pressure
  6. customThe resulting crude product was purified by silica gel column chromatography (hexane/ethyl acetate=2/1)

Sources & evidence

ORD record
ord-e55a2e28889b490ca7a869d6d1424857
Source dataset
uspto-grants-1999_12
Patent number
US05998433

Reaction notes

Loading…