1Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University, Indonesia
2Chemistry Department, Faculty of Mathematics and Natural Sciences, Gadjah Mada University, Indonesia
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@article{JKSA18896, author = {Ismiyarto Ismiyarto and Sabirin Matsjeh}, title = {Sintesis Senyawa Flavonoid dengan Menggunakan Bahan Dasar Senyawa Turunan Benzaldehida}, journal = {Jurnal Kimia Sains dan Aplikasi}, volume = {2}, number = {1}, year = {1999}, keywords = {Claisen-Schmidt; siklisasi; 3’,4’-dimetoksiflavanon}, abstract = {Sintesa 3,4-dimetoksi flavanon dengan menggunakan bahan dasar veratraldehida dan orto hidroksiasetofenon melibatkan dua tahap reaksi, yaitu reaksi Claisen-Schmidt dan siklisasi (adisi nukleofilik keton tak jenuh α, β). Pada reaksi Claisen-Schmidt, veratraldehida dan orto-hidroksiasetofenon bereaksi dalam suasana alkali menghasilkan 2’-hidroksi-3,4-dimetoksikalkon. Pada reaksi siklisasi, senyawa 2’-hidroksi-3,4-dimetoksikalkon mengalami siklisasi dalam kondisi alkali menghasilkan 3,4- dimetoksiflavanon. Analisis struktur senyawa flavanoid dilakukan dengan menggunakan spektrometer IR, UV-Vis dan 1 H-NMR. Senyawa 2’-hidroksi-3,4-dimetoksikalkon yang dihasilkan berwama kuning dengan titik lebur 57°C dan rendemen 74,3%, sedangkan senyawa 3,4-dimetoksiflavanon yang dihasilkan berwama kuning pucat dengan titik lebur 80°C dan rendemen 72,0%.}, issn = {2597-9914}, pages = {23--27} doi = {10.14710/jksa.2.1.23-27}, url = {https://ejournal.undip.ac.id/index.php/ksa/article/view/18896} }
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