and 16 g of 3 u00e5 molecular sieves that are uop type 3 u00e5 beads purchased from the fluka company were introduced into a reacting chamber and stirred for 5 minutes to form a solution 0 09 moles of 3 chloro 2 alkyl propylene was dissolved in methyl ethyl ketone and added to the solution within 10 minutes into the reacting chamber where air inside the reaction chamber was nitrogen then the solution was heated to 80 u00b0 c for 5 hours and monitored using hplc until reaction was complete and further heated to 180 u00b0 c and held on for 3 hours to allow the claisen rearrangement before being left to cool to 80 u00b0 c the solution was was filtered using activated carbon a filtrate was recrystallized using 40 ml of isopropanol then filter paper was used to filter a white recrystallized filtrate being 8 9 g of 1 methallyl 2 2 u2032 hydroxyl 5 u2032 methylphenyl benzotriazole remained on the filter paper yield 72 purity 99 1 melting point 95 u00b0 c 10 g of 2 2 hydroxy 5 methylphenyl benzotriazole 0 044 moles 4 5 g of the triethylamine 0 044 moles 16 1 g of n n dimethylaniline 0 13 moles and 16 g of 4 u00e5 molecular sieves that are uop type 4 u00e5 beads purchased from the fluka company were introduced into the reacting chamber and mixed to form a solution 0 09 moles of 3 chloro 2 alkyl propylene was dissolved in methyl ethyl ketone and added to the solution within 10 minutes into the reacting chamber where air in the reacting chamber was nitrogen then the solution was heated to 80 u00b0 c for 5 hours and a reaction completion.