Sodium Hydroxide → HCID 18663436, compound

HRID 1957014Notes

Reaction equation

HRID 1957014 reaction equation
[OH-].[Na+].[CH3:3][O:4][C:5]([CH2:7][P:8]([O:12][CH3:13])([O:10][CH3:11])=[O:9])=[O:6].[I-].[NH:15]1[C:23]2[C:18](=[CH:19][CH:20]=[CH:21][CH:22]=2)[C:17]([CH2:24][N+](C)(C)C)=[CH:16]1>CN(C=O)C.O>[NH:15]1[C:23]2[C:18](=[CH:19][CH:20]=[CH:21][CH:22]=2)[C:17]([CH2:24][CH:7]([P:8]([O:12][CH3:13])([O:10][CH3:11])=[O:9])[C:5]([O:4][CH3:3])=[O:6])=[CH:16]1

Participants

6

Reactant 3

HCID 14798Sodium HydroxideHCID 80029Trimethyl phosphonoacetateHCID 6097052Gramine methiodide

Product 1

HCID 18663436HCID 18663436, compound

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
0 °C

Procedure

To a stirred solution of indole (5.6 g, 47.8 mmol) in acetonitrile (130 ml) is added Eschenmoser's salt (10 g, 54 mmol) under nitrogen atmosphere and the mixture is stirred for 30 min. The mixture is concentrated in vacuo and the residue is diluted with 1M sodium hydroxide solution and extracted with methylene chloride. The organic layer is dried over sodium carbonate and concentrated in vacuo to give 3-(dimethylaminomethyl)indole as a brown oil. To a solution of 3-(dimethylaminomethyl)indole in methylene chloride (200 ml) is dropped methyl iodide (5 ml, 80 mmol). The mixture is stirred at r.t. for 6 hrs. and concentrated in vacuo to give (3-indolylmethyl)trimethylammonium iodide as a brown foam. To a cooled (0° C.) suspension of sodium hydroxide (1.5 g, 37 mmol) in DMF (100 ml) is added trimethyl phosphonoacetate (6.7 ml, 41 mmol) and the mixture is stirred at 0° C. for 30 min. To the mixture is added (3-indolylmethyl)trimethylammonium iodide and the whole is stirred at r.t. overnight. The mixture is diluted with water and extracted with ethyl acetate. The organic layer is dried over magnesium sulfate and concentrated in vacuo. The residue is chromatographed on silica gel with ethyl acetate to give methyl 3-(3-indolyl)-2-(dimethylphosphono)propionate a a brown oil.

Workup

  1. temperatureTo a cooled
  2. stirringthe whole is stirred at r.t. overnight
  3. extractionextracted with ethyl acetate
  4. dry with materialThe organic layer is dried over magnesium sulfate
  5. concentrationconcentrated in vacuo
  6. customThe residue is chromatographed on silica gel with ethyl acetate

Sources & evidence

ORD record
ord-ce883b9ef14f47669b2e1088e27b2170
Source dataset
uspto-grants-1998_07
Patent number
US05780498

Reaction notes

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