Triethylamine → Tert-butyl (diphenoxyphosphoryl)acetate

HRID 394206

Reaktionsgleichung

Reaktionsgleichung von HRID 394206
[C:1]1([O:7][P:8]([O-:16])[O:9][C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[C:17]([O:21][C:22](=[O:25])[CH2:23]Br)([CH3:20])([CH3:19])[CH3:18].C(N(CC)CC)C>ClCCl>[O:9]([P:8]([CH2:23][C:22]([O:21][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:25])([O:7][C:1]1[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1)=[O:16])[C:10]1[CH:11]=[CH:12][CH:13]=[CH:14][CH:15]=1

Komponenten

5

Edukt 3

HCID 8471TriethylamineHCID 79177tert-Butyl bromoacetateHCID 23418553Diphenoxyphosphanolate

Produkt 1

HCID 10689048Tert-butyl (diphenoxyphosphoryl)acetate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

To a solution of diphenylphosphite (2.25 mL) in dichloromethane at 0° C. was added t-butylbromoacetate (1.48 mL) followed by triethylamine (1.95 mL). The mixture was stirred at 0° C. for 15 min and then at rt for 1 h before being quenched with water and extracted into ethyl acetate, dried over MgSO4 and concentrated. The residue was purified by silica gel chromatography eluting with hexane/ethyl acetate to give the title compound. 1H NMR (500 MHz, CDCl3): δ 7.40-7.18 (m, 10H); 3.22 (s, 1H); 3.18 (s, 1H); 1.50 (s, 9H).

Aufarbeitung

  1. customat rt for 1 h before being quenched with water
  2. extractionextracted into ethyl acetate
  3. dry with materialdried over MgSO4
  4. concentrationconcentrated
  5. customThe residue was purified by silica gel chromatography
  6. washeluting with hexane/ethyl acetate

Quellen und Nachweise

ORD-Eintrag
ord-65ac710e789949a5880f74f2b654d1e1
Quelldatensatz
uspto-grants-2004_10
Patentnummer
US06809199B2

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