Reaktionsgleichung
C(C1C=CC=CC=1S(O)(=O)=O)CCCCCCCCCCC.CO[CH2:25][CH:26]1[O:31][CH2:30][C:29]2([CH2:36][CH2:35][CH2:34][CH2:33][CH2:32]2)[CH2:28][O:27]1>>[CH2:28]1[C:29]2([CH2:32][CH2:33][CH2:34][CH2:35][CH2:36]2)[CH2:30][O:31][CH:26]=[CH:25][O:27]1Komponenten
3
Versuchsvorschrift
250 g of vacuum gas oil were initially taken with 2.5 g of dodecylbenzenesulfonic acid at 250° C. in a stirred flask and nitrogen was passed in. 3-Methoxymethyl2,4-dioxaspiro[5.5]undecane was pumped in at a rate of 20 ml/h and the reaction products were distilled off simultaneously. The crude distillate was then worked up by distillation and gave, in addition to methanol, 83 g of 2,5-dioxaspiro[6.5]dodec-3-ene of boiling point 117° C./30 mbar and 268 g of unconsumed starting material; this corresponded to a conversion with respect to 3-methoxymethyl-2,4-dioxaspiro[5.5]undecane of 31% and a selectivity of 82%.
Aufarbeitung
- distillationthe reaction products were distilled off simultaneously
- distillationThe crude distillate was then worked up by distillation
Quellen und Nachweise
- ORD-Eintrag
- ord-fe652716ff5348a7bdf4f4901113746e
- Quelldatensatz
- uspto-grants-1991_03
- Patentnummer
- US05003089
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