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N-Hydroxyphthalimide → 2-[4-(Tert-butyl-diphenyl-silanyloxy)-butoxy]-isoindole-1,3-dione

HRID 1062269
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1062269
[C:1]([Si:5]([C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1)([C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1)[O:6][CH2:7][CH2:8][CH2:9][CH2:10][OH:11])([CH3:4])([CH3:3])[CH3:2].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.O[N:44]1[C:48](=[O:49])[C:47]2=[CH:50][CH:51]=[CH:52][CH:53]=[C:46]2[C:45]1=[O:54].N(C(OCC)=O)=NC(OCC)=O>O1CCCC1>[C:1]([Si:5]([C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1)([C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1)[O:6][CH2:7][CH2:8][CH2:9][CH2:10][O:11][N:44]1[C:48](=[O:49])[C:47]2[C:46](=[CH:53][CH:52]=[CH:51][CH:50]=2)[C:45]1=[O:54])([CH3:4])([CH3:2])[CH3:3]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 10665N-HydroxyphthalimideHCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 100651081-Butanol, 4-[[(1,1-dimethylethyl)diphenylsilyl]oxy]-

Produkt 1

HCID 222863132-[4-(Tert-butyl-diphenyl-silanyloxy)-butoxy]-isoindole-1,3-dioneAusbeute 77 %

Reagenzien, Katalysatoren, Lösungsmittel

1
HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

4-(tert-Butyl-diphenyl-silanyloxy)-butan-1-ol (10.0 g, 30.5 mmol), triphenylphosphine (8.0 g, 30 mmol), and N-hydroxyphthalimide (4.97 g, 30.5 mmol) were combined in anhydrous tetrahydrofuran (200 ml) at 0° C. and the resultant solution was stirred at 0° C. for 1 hour. Diethyl azodicarboxylate (5.31 g, 30.5 mmol) was added at 0° C., and the reaction mixture was allowed to gradually warm to room temperature and stirred overnight. The reaction mixture was concentrated under reduced pressure and the residue was dissolved in chloroform. Precipitation ensued, and the white solid was removed by filtration. The filtrate was concentrated and purified with column chromatography (hexane/ethyl acetate(3/1)) to afford 2-[4-(tert-butyl-diphenyl-silanyloxy)-butoxy]-isoindole-1,3-dione (11.06 g, 77% yield) as colorless crystals: 1H NMR (400 MHz, DMSO-d6) δ 7.84 (4H, s), 7.59 (4H, dd, J=7.6, 1.0 Hz), 7.39-7.43 (6H, m), 4.13 (2H, t, J=6.4 Hz), 3.68 (2H, t, J=5.8 Hz), 1.67-1.78 (4H, m), 0.95 (9H, s).

Aufarbeitung

  1. concentrationThe reaction mixture was concentrated under reduced pressure
  2. dissolutionthe residue was dissolved in chloroform
  3. customPrecipitation
  4. customthe white solid was removed by filtration
  5. concentrationThe filtrate was concentrated
  6. custompurified with column chromatography (hexane/ethyl acetate(3/1))

Quellen und Nachweise

ORD-Eintrag
ord-cfcb9cc9e0a24df49abd999c55c05b1c
Quelldatensatz
uspto-grants-2005_11
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US06960614B2

Notizen zur Reaktion

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