Hydrochloric Acid → Tetrahydropyranyl methacrylate

HRID 1029351

Reaktionsgleichung

Reaktionsgleichung von HRID 1029351
[C:1]([OH:6])(=[O:5])[C:2]([CH3:4])=[CH2:3].[O:7]1[CH:12]=[CH:11][CH2:10][CH2:9][CH2:8]1.Cl.C(=O)(O)[O-].[Na+]>[N+](C1C=C([N+]([O-])=O)C=CC=1C)([O-])=O.Cl>[C:1]([O:6][CH:8]1[CH2:9][CH2:10][CH2:11][CH2:12][O:7]1)(=[O:5])[C:2]([CH3:4])=[CH2:3]

Komponenten

7

Edukt 4

HCID 313Hydrochloric AcidHCID 4093Methacrylic AcidHCID 80803,4-dihydro-2H-pyranHCID 516892Sodium Bicarbonate

Produkt 1

HCID 11041138Tetrahydropyranyl methacrylateAusbeute 91 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 313Hydrochloric AcidKatalysatorHCID 84612,4-DinitrotolueneKatalysator

Reaktionsbedingungen

Temperatur
50 °C

Versuchsvorschrift

to a solution of 25.8 g (0.3 mol) methacrylic acid and 1.8 g (0.011 mol) 2,4-dinitrotoluene in 25.2 g (0.3 mol) dihydropyran was added 0.05 ml (0.0015 mol) concentrated hydrochloric acid. The reaction mixture was allowed to stir at 50° C. for 25 hr. The hydrochloric acid was neutralized with solid sodium bicarbonate and the mixture was filtered. The filtrate was distilled to give 46.5 g (0.273 mol, 91% yield) tetrahydropyran-2-yl methacrylate, bp 50° C. at 0.15 torr.

Aufarbeitung

  1. filtrationthe mixture was filtered
  2. distillationThe filtrate was distilled

Quellen und Nachweise

ORD-Eintrag
ord-66cf5a336c114383a434d5b7a1ba83f8
Quelldatensatz
uspto-grants-1992_04
Patentnummer
US05102771

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