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Triphenylphosphine, tert-butyl chloroacetate, and dichloromethane were added to the reaction vessel in sequence, the temperature was raised to reflux, and the reaction was carried out at reflux for 2 hours. Cool, let stand for 20 h, then filter. The filter cake was washed with ether at 10°C, and the mother liquor and washing liquid were collected separately to yield a filter cake containing (tert-butoxycarbonylmethyl)triphenylphosphonium chloride (2) (71% purity). I wonder what equipment needs to be chosen for each process? Especially when the temperature is raised to the reflux point. Thank you
This post was last edited by Fengyan Gudao on 2016-8-9 at 11:43
This post was last edited by Fengyan Gudao on 2016-8-9 at 11:41
What I don’t understand is that the condenser is supposed to be used for cooling. Is that cooling and standing time carried out in some device?
What I don’t understand is that the condenser is supposed to be used for cooling. Is that cooling and standing time carried out in some device?
A condenser is used, right? It’s for cooling the substances that are vaporized during the reaction. Cooling and allowing things to settle can be done inside the reaction vessel
Heating is generally carried out in a reaction vessel
Enameled reaction kettle, condenser. Leave it to stand for 20 hours; it’s clear that this is a pilot or pilot-scale process. Try leaving it in the workshop for 20 hours – with the mixture remaining inside the tank – and make sure to stir it from time to time to prevent any issues with discharging the material. For filtration, use a centrifuge and washing.