Thiophosgene → HCID 11724583, Verbindung

HRID 1029545Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1029545
[C:1](Cl)(Cl)=[S:2].[CH3:5][C:6]([C:9]1[CH:10]=[C:11]([CH:18]=[C:19]([C:22]([CH3:25])([CH3:24])[CH3:23])[C:20]=1[OH:21])[O:12][CH2:13][C:14]([NH:16][NH2:17])=[O:15])([CH3:8])[CH3:7]>O1CCCC1.C(OCC)(=O)C>[CH3:8][C:6]([C:9]1[CH:10]=[C:11]([CH:18]=[C:19]([C:22]([CH3:25])([CH3:24])[CH3:23])[C:20]=1[OH:21])[O:12][CH2:13][C:14]1[O:15][C:1](=[S:2])[NH:17][N:16]=1)([CH3:5])[CH3:7]

Komponenten

5

Edukt 2

HCID 10040ThiophosgeneHCID 10424537HCID 10424537, Verbindung

Produkt 1

HCID 11724583HCID 11724583, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8028TetrahydrofuranLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

Thiophosgene (0.10 mL, 1.36 mmol) is added dropwise to a -78° C. solution of [3,5-bis(1,1-dimethylethyl)-4-hydroxyphenoxy-acetic acid hydrazide (0.40 g, 1.36 mmol) in tetrahydrofuran (25 mL). The reaction mixture is stirred for 30 minutes, diluted with ethyl acetate, and washed three times with water and once with brine. Drying the organic phase over magnesium sulfate and evaporation gives a pale yellow oil which is crystallized from ethyl acetate/hexane yielding 0.36 g (78%) of 5-[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenoxymethyl]-1,3,4-oxadiazole-2(3H)-thione, mp 195.0°-196.5° C.

Aufarbeitung

  1. washwashed three times with water
  2. customDrying the organic phase
  3. customover magnesium sulfate and evaporation
  4. customgives a pale yellow oil which
  5. customis crystallized from ethyl acetate/hexane yielding 0.36 g (78%) of 5-[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenoxymethyl]-1,3,4-oxadiazole-2(3H)-thione, mp 195.0°-196.5° C.

Quellen und Nachweise

ORD-Eintrag
ord-e6e9eaa9b2e243b69d9146ca2a1bc0b6
Quelldatensatz
uspto-grants-1992_04
Patentnummer
US05102897

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