3. Epoxidizing Stilbene (eq 4) The best way to get the proper pH for this reaction is to use a pH meter. When it comes time to do this step, the TAs can show you how to use our meter. Monitoring this reaction by tlC can be tricky since the organic layer is on the bottom. The best way to do it is to dip a pipet as deep as possible into the mixture. The liquid drawn into the pipet by capillary action can then be rinsed into a vial using pentane. The less dense organic phase will now be present on top of the aqueous phase and will be easy to obtain using your TLC spotter. Note: we are only using this extravagant dilution procedure because this is a biphasic solution in dichloromethane. Most homogeneous reaction solutions(or biphasic mixtures with less dense organic solvents) can be directly spotted onto tlC plates for analysis 0.5 M Na2HPO4, Clorox 0.10 equiv Mn(salen CH2Cla2,o°toRT3. Epoxidizing Stilbene (eq 4) • The best way to get the proper pH for this reaction is to use a pH meter. When it comes time to do this step, the TAs can show you how to use our meter. • Monitoring this reaction by TLC can be tricky since the organic layer is on the bottom. The best way to do it is to dip a pipet as deep as possible into the mixture. The liquid drawn into the pipet by capillary action can then be rinsed into a vial using pentane. The less dense organic phase will now be present on top of the aqueous phase and will be easy to obtain using your TLC spotter. Note: we are only using this extravagant dilution procedure because this is a biphasic solution in dichloromethane. Most homogeneous reaction solutions (or biphasic mixtures with less dense organic solvents) can be directly spotted onto TLC plates for analysis. O 0.5 M Na2HPO4, Clorox 0.10 equiv. Mn(salen) CH2Cl2, 0 °C to RT (4) 40