N-methyl-2-pyrrolidone → 2,4,8,10-Tetra-tert-butyl-6-chloro-12-methyl-12H-dibenzo[d,g][1,3,2]dioxaphosphocine

HRID 2259851Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2259851
[CH:1]([C:18]1[CH:23]=[C:22]([C:24]([CH3:27])([CH3:26])[CH3:25])[CH:21]=[C:20]([C:28]([CH3:31])([CH3:30])[CH3:29])[C:19]=1[OH:32])([C:3]1[CH:8]=[C:7]([C:9]([CH3:12])([CH3:11])[CH3:10])[CH:6]=[C:5]([C:13]([CH3:16])([CH3:15])[CH3:14])[C:4]=1[OH:17])[CH3:2].CN1CCCC1=O.[P:40](Cl)(Cl)[Cl:41]>C1(C)C=CC=CC=1>[Cl:41][P:40]1[O:17][C:4]2[C:5]([C:13]([CH3:16])([CH3:14])[CH3:15])=[CH:6][C:7]([C:9]([CH3:12])([CH3:10])[CH3:11])=[CH:8][C:3]=2[CH:1]([CH3:2])[C:18]2[CH:23]=[C:22]([C:24]([CH3:27])([CH3:26])[CH3:25])[CH:21]=[C:20]([C:28]([CH3:31])([CH3:30])[CH3:29])[C:19]=2[O:32]1

Komponenten

5

Edukt 3

HCID 13387N-methyl-2-pyrrolidoneHCID 24387Phosphorus trichlorideHCID 1188992,2'-Ethylidenebis(4,6-di-tert-butylphenol)

Produkt 1

HCID 110602032,4,8,10-Tetra-tert-butyl-6-chloro-12-methyl-12H-dibenzo[d,g][1,3,2]dioxaphosphocineAusbeute 34,8 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel

Versuchsvorschrift

To a solution of 50.9 g. (0.12 mol) of 2,2'-ethylidenebis(4,6-di-tert-butylphenol) and 1.73 mL (0.018 mol) of 1-methyl-2-pyrrolidinone in 275 mL of toluene at ambient temperature is added dropwise 15.7 mL (0.18 mol) of phosphorus trichloride. After the addition is complete, the reaction mixture is heated at reflux for 18 hours. After cooling to room temperature, the toluene is removed in vacuo and the residue is then recrystallized twice from 250 mL of acetonitrile. The acetonitrile is decanted from the product which is dried under vacuum to give 21.0 g (34.8% yield) of the title compound as an off-white solid melting at 194°-198° C.

Aufarbeitung

  1. additionAfter the addition
  2. temperaturethe reaction mixture is heated
  3. temperatureat reflux for 18 hours
  4. customthe toluene is removed in vacuo
  5. customthe residue is then recrystallized twice from 250 mL of acetonitrile
  6. customThe acetonitrile is decanted from the product which
  7. customis dried under vacuum

Quellen und Nachweise

ORD-Eintrag
ord-63b22777b23f4ce08ef791f2733bb9d5
Quelldatensatz
uspto-grants-1995_12
Patentnummer
US05475042

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