Benzoic Acid → 3-Ethoxy-2,4-dioxa-bicyclo[3,2,0]heptane
Reaktionsgleichung
[CH2:1]([O:3][CH:4]([OH:6])[OH:5])[CH3:2].C(O)(=O)[C:8]1[CH:13]=[CH:12][CH:11]=CC=1>>[CH2:1]([O:3][CH:4]1[O:6][CH:12]2[CH:11]([CH2:8][CH2:13]2)[O:5]1)[CH3:2]Komponenten
3
Versuchsvorschrift
130.8 g (1.5 mols) of cyclobutane-cis-1,2-diol, 222.6 g (1.5 mols) of orthoformic acid ethyl ester and 15.0 g of benzoic acid are heated from 90° to 120° C. in the course of 3 hours. The ethanol which forms is distilled off continuously. Fractional distillation in vacuo gives 179.5 g (83%) of 3-ethoxy-2,4-dioxa-bicyclo[3,2,0]heptane (stereoisomer mixture), boiling point11 63°.
Aufarbeitung
- distillationThe ethanol which forms is distilled off continuously
- distillationFractional distillation in vacuo
Quellen und Nachweise
- ORD-Eintrag
- ord-6204157f7e9142c19291ae2069e12e2c
- Quelldatensatz
- uspto-grants-1981_02
- Patentnummer
- US04252738
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