OKSIDASI SENYAWA 1-(2,5-dihidroksifenil)-3-piridin-2-il-propenon MENGUNAKAN KATALIS I2 DALAM DMSO DENGAN BANTUAN MICROWAVE
Abstract
The 6-hydroxy-2-(pyridin-2-yl)-4H-chromen-4-one is a modified
compound of 1-(2,5-dihydroxyphenyl) -3-pyridine-2-yl propenone in an oxidative
manner. The 6-hydroxy-2- (pyridin-2-yl)-4H-chromen-4-one compounds include
flavone compounds. Flavones are flavonoids that are widely distributed in plants.
This flavon also has activity as antiinflamsi, antikanker, antivirus and others. The
purpose of this study was to find a 6-hydroxy-2- (pyridin-2 il) -4H-chroman-4-one
compound which can be synthesized from the oxidation of 1- (2,5 dihydricsifenol)
-3-pyridine-2-yl-propenone) using a catalyst I2 in DMSO with the help of
microwave radiation.
The method performed in this synthesis is the oxidation of the 1- (2,5-
dihydroxyphenyl) -3-pyridine-2-yl propenone compound with the I2 catalyst in
DMSO using microwave for 2-4 minutes in 140 watt power. Thin Layer
Chromatography (DLC) -Densitometry analysis to test the most optimal reaction
conditions method to produce new compound products. LCMS analysis is used to
determine the molecular weight of new compounds that are formed.
Results of crude product analysis using KLT-densitometric test obtained
optimal reaction conditions with an area of 14413.4 and Rf 0.81. Optimal reaction
conditions formed on the raw material mass 124.5 mg, mass I2 128 mg, and
DMSO 3 drops in microwave time 2 minutes with 140 watts of power. The LCMS
analysis at 0.47 minute retention obtained molecular weight of 239.90 m / z
with a 100% concentration allegedly corresponding to the molecular weight of
239 6-hydroxy-2-(pyridin-2-il)-4H-chromen-4-one compound of the molecular
formula C14H9O3N.