摘要：The curcumin and its derivates are obtained by condensing the carbonyl components. In this condensation vanillin and substitute benzaldehids used in synthesis react as carbonyl components and acetyl acetone react as metylene component through its two metylenic lateral groupings. The problem that appears consists in the fact that acetyl acetone contains also a median metylene grouping the reactivity of which is bigger than that of the lateral ones. Because of this, during the synthesis it is necessary to block the median metylene grouping following that at the end of the synthesis this one is liberated. The present work aims to synthesise and analyze the curcumin and some of its derivatives using the experimental data regarding the spectrums H-RMN and the electronic spectrums of these components. It was used as primary matter the vanillin for the synthesis of curcumine and of the substituted benzadehids such as : 4 nitro-benzaldehide, N'-dimetilamino-benzaldehide and 4-hidroxi-benzaldehide, for the synthesis of the derivatives of curcumine
关键词：derivates of curcumin; chemical synthesis; spectral analysis
