ABSTRAKSenyawa turunan pirimidin telah berhasil disintesis dengan mereaksikan benzaldehida,etil asetoasetat, dan urea melalui reaksi kondensasi Biginelli. Produk yang terbentukdikarakterisasi menggunakan alat FTIR, UV-Vis, dan GC-MS. Pada sintesis senyawaini digunakan nanokatalis CuFe2O4 yang berhasil disintesis dengan metode kopresipitasidan dikonfirmasi dengan FTIR, XRD, TEM dan PSA. Berdasarkan optimasi (senyawa1) dengan nama IUPAC 5-(ethoxy carbonyl)-4-(phenyl)-6-methyl-3,4-dihydropyrimidin2(1-)onediperoleh kondisi optimum dengan waktu 4 jam reaksi, suhu 70°C, dan 7,5%berat katalis dengan yield sebesar 71,57%, untuk (senyawa 2) 5-(ethoxy carbonyl)-4-(phenyl)-6-methyl-3,4-dihydropyrimidin-2(1H)thione diperoleh kondisi optimum selamawaktu 4 jam reaksi, suhu 50°C, dan 7,5% berat katalis dihasilkan yield sebesar 76,84%sedangkan untuk (senyawa 3) pada waktu 4 jam reaksi, suhu 70°C, dan 7,5% beratkatalis dengan yield sebesar 73,69% belum berhasil membentuk senyawa5-(ethoxy carbonyl)-4-(phenyl)-6-methyl-3,4-dihydropyrimidin-2(1H)imine dari reaktanbenzaldehida, etil asetoasetat dan guanidin.

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ABSTRACTPyrimidine derivatives have been synthesized by reacting benzaldehyde, ethylacetoacetate, urea through Biginelli condensation reaction using CuFe2O4 nanocatalyst .Characterization of the three of product were performed by using FTIR, UV-Vis andGC-MS. In the synthesis of these compounds using CuFe2O4 nanocatalyst weresuccessfully synthesized by coprecipitation method and characterized by FTIR, XRD,PSA, TEM. Optimum conditions for producing (compound 1) 5-(ethoxy carbonyl)-4-(phenyl)-6-methyl-3,4-dihydropyrimidin-2(1H)one were 4 hours reaction, temperature70° C and 7.5% weight catalyst with yield 71.57% , (compound 2) 5-(ethoxy carbonyl)-4-(phenyl)-6-methyl-3,4-dihydropyrimidin-2(1H)thione was at 4 hours reaction, 50° Cand 7.5% weight catalyst with yield 76.84% and compound 3 were 4 hours reaction,temperature 70° C and 7.5% weight catalyst with yield 73.69% has not succeeded informing a 5-(ethoxy carbonyl)-4-(phenyl)-6-methyl-3,4-dihydropyrimidin-2(1H)imine.