Triphenylphosphine → HCID 18470904, compound

HRID 2228789Notes

Reaction equation

HRID 2228789 reaction equation
N(C(OCC)=O)=NC(OCC)=O.O[C:14]1[CH:15]=[C:16]([CH2:20][C:21]#[N:22])[CH:17]=[CH:18][CH:19]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[OH:42][CH2:43][CH2:44][NH:45][C:46](=[O:52])[O:47][C:48]([CH3:51])([CH3:50])[CH3:49]>O1CCCC1.C(OCC)(=O)C>[C:21]([CH2:20][C:16]1[CH:17]=[CH:18][CH:19]=[CH:14][C:15]=1[O:42][CH2:43][CH2:44][NH:45][C:46](=[O:52])[O:47][C:48]([CH3:50])([CH3:49])[CH3:51])#[N:22]

Participants

7

Reactant 4

HCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 2733206tert-butyl N-(2-hydroxyethyl)carbamateHCID 137810422-(3-Hydroxyphenyl)acetonitrile

Product 1

HCID 18470904HCID 18470904, compound

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

Diethyl azodicarboxylate (6.2 ml, 39.4 mmol) was added dropwise to an ice-cooled solution of 3-hydroxyphenyl acetonitrile (preparation 126) (4.2 g, 31.5 mmol), triphenylphosphine (10.34 g, 39.4 mmol) and tert-butyl 2-hydroxyethylcarbamate (5.4 ml, 34.9 mmol) in tetrahydrofuran (70 ml), and once addition was complete, the reaction was stirred at room temperature overnight. The reaction was diluted with ethyl acetate (400 ml), washed with 1N NaOH solution, water, brine, then dried over MgSO4 and concentrated under reduced pressure. The residue was purified by column chromatography on silica gel using ethyl acetate:pentane (30:70) as eluant to give the desired product as a yellow/green oil, that crystallised on standing, (5.88 g, 68%).

Workup

  1. temperaturecooled
  2. washwashed with 1N NaOH solution, water, brine
  3. dry with materialdried over MgSO4
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by column chromatography on silica gel

Sources & evidence

ORD record
ord-947ff78d22074313b3fa96f01829964a
Source dataset
uspto-grants-2002_07
Patent number
US06417203B1

Reaction notes

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