Pengaruh Etilena Glikol dan KOH Dalam Pembentukan 2-Metoksi-4-Propilfenol Pada Reaksi Isomerisasi Eugenol
ABSTRAC: TFormation reaction
mechanism of 2-methoxy-4-propylphenol on
eugenol isomerization that involved protic hydrogen originated from ethylene
glycol as a solvent has been done. To check this reaction mechanism, the effect
of amounts of ethylene glycol as a solvent and KOH as a reagent on the quantity
of 2-methoxy-4-propylphenol as a product has been carried out. The reaction
product was analyzed by GC and GC-MS. Quantity of 2-methoxy-4-propylphenol as a
product increased if ratio of quantity of ethylene glycol as solvent to
quantity of KOH as reagent became larger. The result showed that formation
process of 2-methoxy-4-propylphenol involved the protic hydrogen of solvent. The
existence of cis-isoeugenol as an initiator compound in forming
2-methoxy-4-propylphenol indicated that the reaction mechanism followed the
steps (1) cis-isoeugenolic ion gave Cb with negative charge at prophenyl group
through resonance (2) a negative charge Cb then attacked a protic H atom in the
solvent, and (3) hydride ion will attack Cb to form 2-methoxy-4-propylphenolic
ion .
Penulis: Muchalal
Kode Jurnal: jpkimiadd050024
