TANAYA JATI DHARMA DEWI, 050911192 (2013) PENGARUH SUBSTITUEN METOKSI PADA 4-METOKSIBENZALDEHIDA TERHADAP PERSENTASE HASIL SINTESIS 1-FENIL-3-(4- METOKSIFENIL)-2-PROPEN-1-ON DENGAN KATALIS NaOH. Skripsi thesis, UNIVERSITAS AIRLANGGA.

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Abstract

The aim of this research is to determine the Influence of methoxy substituent of 4-methoxybenzaldehyde on synthesis of 1-phenyl-3-(4- methoxyphenyl)-2-propen-one. It can be observed by comparing yields of products 1,3-dipheny-2-propen-1on and 1-phenyl-3-(4-methoxyphenyl)-2- propen-one. The methoxy substituent makes carbonyl (C=O) on 4-methoxybenzaldehide more reactive than benzaldehyde. This synthesis use Claisen-Schimdt condensation with catalyst NaOH. The products was synthesized at room temperature for 60 minutes. Synthesis of 1,3-dipheny-2-propen-1on was obtained 66.37 % yields yellow crystal (melting point 53°C-54°C). Synthesis of 1-phenyl-3-(4- methoxyphenyl)-2-propen-one 85.24% yields yellow crystal (melting point 73°-74°C). So it can be conclude that methoxy substituent on 4-methoxybenzaldehyde makes carbonyl carbon (C=O) on 4-methoxybenzaldehide more reactive than benzaldehyde which gave influence on the yields of products.

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