Cinnamic aldehyde is an organic compound of aldehydes. It is a thick yellow liquid and is found in many plants such as cinnamon. The naturally occurring Cinnamic aldehyde in nature is trans-structured, and this molecule is a phenylaldehyde attached to a phenyl group, and thus can be considered as an acrolein derivative. The Cinnamic aldehyde color is generated due to the π→π* transition, and the presence of the conjugated structure allows the absorption spectrum of Cinnamic aldehyde to enter the visible light band.
Cinnamic aldehyde is commonly referred to as Cinnamic aldehyde and naturally occurs in essential oils such as cinnamon oil, cinnamon oil, musk oil, hyacinth oil, and rose oil of Sri Lanka. There is cis- and trans-isomer of cinnamic aldehyde, and the commercial Cinnamic aldehyde, either natural or synthetic aldehyde, is trans-body.
In the anode cell, 25% sulfuric acid (60 mL) and 13 g Ce(NO3)3.2H2O were added, and magnetic stirring was used to dissolve the antimony salts. Add a proper amount of 25% sulfuric acid to the cathode chamber, turn on the DC power supply for electrolysis, control the current relative density of 0.2A/20cm2, electrolysis 8.2h. The anolyte was transferred into a 250 mL three-necked flask, 1.349 cinnamyl alcohol was added, and the reaction was stirred at 5 to 10°C. When the solution turned yellow, it was the end of the reaction. The reaction solution was extracted with diethyl ether (15 mL×3 times), and the extracted reaction solution was used to regenerate Ce4+. The ether extract was dried over anhydrous sodium sulfate, filtered, and the ether was distilled off. Chromatographic analysis showed a Cinnamic aldehyde yield of 90%.