Sintesis Senyawa Mentil Vanilat dari Vanilin dan Aplikasinya sebagai Parfum

Abstract

Synthesis of menthyl vanilate compound has been carried out and its application as
perfume. The synthesis was carried out through oxidation of vanillin using Tollens reagent
followed by esterification of vanillic acid with menthol. The result of oxidation process were
analyzed for melting point and characterized using FTIR. Esterification of vanillic acid using
menthol was carried out by addition of SOCL2 reagent. The synthesized compound was
characterized using FTIR and Proton Nuclear Magnetic Resonance (1H-NMR) and followed
by organoleptic test. Melting point of vanillic acid is 212oC. Identification of vanillic acid
with FTIR is shown that the absorption of C-H aldehyde at wave numbers 2850 and 2750 cm -
1 is absence indicating that the aldehyde group of vanillin has been oxidized completely.
Esterification of Vanillic acid using menthol with the addition of SOCl2 produces an
irreversible reaction and obtained a brown liquid which is mentil vanilat ester compound.
Synthesis of menthyl vanilate compound was obtained with yield 48.05%. Identification of
menthyl vanillate with FTIR showed the absorption of C-O (from Ester) at wave numbers
1219 and 1180 cm-1. Identification with 1H NMR showed the peak at chemical shift 0.74-
2.16 ppm which is absorption of proton from the substituted menthyl group. Based on the
result of identification using FTIR and 1H NMR spectrophotometers can be concluded that
menthyl vanillate compound has been successfully synthesized. The result of organoleptic test
showed that 95% of respondents agree that the compound is fragrant, 100% respondents agree
that the the aroma of compound is sharp, and 75% of respondents like the product of the
synthesized compound to be perfume.