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Example 4
Reporting process: controlling the temperature below 30 ℃, the over potassium hydrogen sulfate solution complex salt (of Oxone) was added dropwise compound A in acetone solution
Remarks: Potassium hydrogen persulfate composite salt is easy to dissolve in water and consists of potassium hydrogen persulfate, potassium hydrogen sulfate and potassium sulfate (KHSO 5 ·0.
Example 5
Application process: the reaction of methyl acrylate and H 2 /CO mixed gas under high pressure (1000 psi) catalytic conditions of 55~65℃ to insert carbonyl groups to make aldehydes.
Remarks: Acrylate may undergo exothermic polymerization under heating, and the risk is very high under airtight conditions.
Example 6
Application process: Put the reaction flask in the aluminum bath, add AlCl 3 , and add the substrate to the reactor in batches when the temperature is raised to about 260°C
Remarks: At high temperature, you need to pay attention to the sublimation of AlCl 3 , which will condense on the top of the bottle, which may cause blockage and danger