Phosphoric Acid → 4-Hydroxy-4-methyl-5-(prop-2-en-1-yl)cyclopent-2-en-1-one

HRID 1073695Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1073695
[CH3:1][C:2]1[O:11][C:5]([CH:6](O)[CH2:7][CH:8]=[CH2:9])=[CH:4][CH:3]=1.P([O-])([O-])(O)=[O:13].[K+].[K+].P(=O)(O)(O)O>O>[CH2:7]([CH:6]1[C:2]([OH:11])([CH3:1])[CH:3]=[CH:4][C:5]1=[O:13])[CH:8]=[CH2:9]

Komponenten

5

Edukt 3

HCID 1004Phosphoric AcidHCID 24450Potassium Phosphate, DibasicHCID 110625572-(1-hydroxy-3-butenyl)-5-methyl furan

Produkt 1

HCID 128798724-Hydroxy-4-methyl-5-(prop-2-en-1-yl)cyclopent-2-en-1-oneAusbeute 80 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

In the same apparatus as in Example 1, 5-methyl-allyl-furfuryl alcohol (50 parts) and a buffer solution prepared from water (1500 parts) and dipotassium monohydrogen phosphate (1.7 parts) and adjusted to pH 5.1 with phosphoric acid were charged, and the resultant mixture was stirred at 100° C. in a nitrogen stream until the starting compound was consumed. The reaction mixture was treated as in Example 1 to give 2-allyl-3-hydroxy-3-methyl-4-cyclopentenone in a yield of 80 %.

Aufarbeitung

  1. additionwere charged
  2. customwas consumed
  3. additionThe reaction mixture was treated as in Example 1

Quellen und Nachweise

ORD-Eintrag
ord-627baeafa549496b8524eb7a461d6c84
Quelldatensatz
uspto-grants-1990_11
Patentnummer
US04970345

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