Triethylamine → HCID 19599915, compound

HRID 611154Notes

Reaction equation

HRID 611154 reaction equation
Cl.[O:2]1[C:6]2[CH2:7][NH:8][CH2:9][CH2:10][C:5]=2[CH:4]=[CH:3]1.[C:11]1(/[CH:20]=[CH:21]/[C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)[CH:16]=[CH:15][C:14]([C:17](O)=[O:18])=[CH:13][CH:12]=1.C(N(CC)CC)C.C(P(=O)(OCC)OCC)#N>ClCCl.O>[C:11]1(/[CH:20]=[CH:21]/[C:22]2[CH:23]=[CH:24][CH:25]=[CH:26][CH:27]=2)[CH:12]=[CH:13][C:14]([C:17]([N:8]2[CH2:9][CH2:10][C:5]3[CH:4]=[CH:3][O:2][C:6]=3[CH2:7]2)=[O:18])=[CH:15][CH:16]=1

Participants

7

Reactant 4

HCID 8471TriethylamineHCID 76257Diethyl cyanophosphonateHCID 6288029RARECHEM AL BE 0219HCID 195999074,5,6,7-Tetrahydrofuro[2,3-c]pyridine hydrochloride

Product 1

HCID 19599915HCID 19599915, compound

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6344DichloromethaneSolvent

Procedure

To a solution of 0.160 g (1.000 mmol) of 4,5,6,7-tetrahydrofuro[2,3-c]pyridine hydrochloride, 0.269 g (1.2 mmol) of (E)-4-stilbenecarboxylic 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 sodium sulfate; the solvent was distilled off under reduced pressure. The resulting crude product was purified by silica gel column chromatography (hexane/ethyl acetate/dichloromethane=4/1/1), after which it was recrystallized from hexane 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 sodium 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/dichloromethane=4/1/1)
  7. customafter which it was recrystallized from hexane

Sources & evidence

ORD record
ord-42e7a42c026b4f42ab6ff67ce899e416
Source dataset
uspto-grants-1999_12
Patent number
US05998433

Reaction notes

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