PENGARUH VARIASI RASIO MOL 4-METOKSIBENZALDEHIDA DAN SIKLOHEKSANON PADA SINTESIS 2-(4’-METOKSIBENZILIDEN)SIKLOHEKSANON menggunakan metode MICROWAVE ASSISTED ORGANIC SYNTHESIS

Abstract

Tujuan penelitian ini adalah menentukan pengaruh variasi rasio mol dan rasio mol yang menghasilkan rendemen maksimal. Sintesis senyawa 2-(4’-metoksibenziliden)sikloheksanon dilakukan melalui reaksi kondensasi Claissen Schmidt dengan katalis NaOH. Variasi rasio mol 4-metoksibenzaldehida:sikloheksanon yang digunakan adalah 1:1, 1:2, 1:4, 1:6, dan 1:8. Sintesis 2-(4’-metoksibenziliden)sikloheksanon menggunakan metode MAOS dibutuhkan waktu 120 detik. Senyawa hasil sintesis diidentifikasi menggunakan KLT, KLT scan, spektroskopi IR dan 1H NMR. Hasil penelitian menunjukkan bahwa variasi rasio mol 4-metoksibenzaldehida:sikloheksanon berpengaruh pada sintesis 2-(4’-metoksibenziliden)-sikloheksanon. Hal tersebut ditunjukkan dari perbedaan rendemen yang dihasilkan. Variasi rasio mol 4-metoksibenzaldehida:sikloheksanon 1:1, 1:2, 1:4, 1:6, dan 1:8 menghasilkan rendemen 2-(4’-metoksibenziliden)sikloheksanon secara berurutan 0%; 59,272%; 64,122%; 46,782%; dan 45,555%. Rasio mol 4-metoksibenzaldehida: sikloheksanon yang memberikan rendemen maksimal adalah 1:4.(THE EFFECT of 4-METHOXYBENZALDEHYDe AND CYCLOHEXANONE MOLE RATIO VARIATION ON THE SYNTHESIS of 2-(4’-METHOXYBENZYLIDENE)CYCLOHEXANONE USING MICROWAVE ASSISTED ORGANIC SYNTHESIS METHODS)This research aims to determine the effect of mole ratio variation and mole ratio which produce maximum yield. Synthesis of 2-(4’-methoxybenzylidene)cyclohexanone was done through Claissen Schmidt condensation with NaOH as catalyst. Variation of 4-methoxybenzaldehyde:cyclohexanone mole ratio were 1:1, 1:2, 1:4, 1:6, and 1:8. 2-(4’-methoxybenzylidene)cyclohexanone could be synthezied using MAOS methods for 120 seconds. Synthesis product was identified by TLC, TLC scan, spectroscopy IR, and spectroscopy 1H NMR. The result of this research showed that the variation of 4-methoxybenzaldehyde:cyclohexanone mole ratio had an effect on the synthesis of 2-(4’-methoxybenzylidene)cyclohexanone. It was proven by the different of yields which have been produced. Variation of  4-methoxybenzaldehyde:cyclohexanone mole ratio 1:1, 1:2, 1:4, 1:6, and 1:8 produced 2-(4’-methoxybenzylidene)cyclohexanone 0%; 59.272%; 64.122%; 46.782%; and 45.555% in yields respectively. The mole ratio of 4-methoxy-benzaldehyde:cyclohexanone which gives the maximum yield is 1:4.