Preparation method of 10 'H-spiro [fluorene-9, 9'-phenanthrene]-10 '-ketone
A technology of fluorenone and triethyl phosphite, which is applied in the field of organic synthesis, can solve the problems of not being able to meet industrialized large-scale production, environmental protection, low reaction efficiency, and uneconomical preparation process, and achieve less emissions, reduced emissions, The effect of simple operation of the reaction
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[0038] Example 1
[0039] Preparation of 10'H-spiro[fluorene-9,9'-phenanthrene]-10'-one
[0040] 1) Add 200 g of triethyl phosphite to a 1L four-necked flask equipped with a stirrer, a reflux condenser and a thermometer, and start stirring. Under low-speed stirring, 100 g of fluorenone was added into the reaction flask. After the system was evenly stirred, the temperature was raised to reflux, and the reaction was kept for 24 hours. During the reaction process, the material gradually dissolves, and the color of the solution gradually deepens;
[0041] 2) After the reaction is completed, the heating is stopped, and the reaction is cooled to 100 ℃ by itself. When the temperature dropped to room temperature, a large amount of white crystals separated out in the reaction bottle and were collected by suction filtration;
[0042] 3) Transfer the solid to another 1L four-necked flask equipped with a stirrer, a reflux condenser and a thermometer, add anhydrous ethanol twice the weig...
Example Embodiment
[0044] Example 2
[0045] Preparation of 10'H-spiro[fluorene-9,9'-phenanthrene]-10'-one
[0046] 1) Add 250 g of triethyl phosphite to a 1L four-necked flask equipped with a stirrer, a reflux condenser and a thermometer, and start stirring. Under low-speed stirring, 100 g of fluorenone was added into the reaction flask. After the system was evenly stirred, the temperature was raised to reflux, and the reaction was kept for 24 hours. During the reaction process, the material gradually dissolves, and the color of the solution gradually deepens;
[0047] 2) After the reaction is completed, the heating is stopped, and the reaction is cooled to 100 ℃ by itself. When the temperature dropped to room temperature, a large amount of white crystals separated out in the reaction bottle and were collected by suction filtration;
[0048] 3) Transfer the solid to another 1L four-necked flask equipped with a stirrer, a reflux condenser and a thermometer, add anhydrous ethanol twice the we...
Example Embodiment
[0050] Example 3
[0051] Preparation of 10'H-spiro[fluorene-9,9'-phenanthrene]-10'-one
[0052] 1) Add 300 g of triethyl phosphite to a 1L four-necked flask equipped with a stirrer, a reflux condenser and a thermometer, and start stirring. Under low-speed stirring, 100 g of fluorenone was added into the reaction flask. After the system was evenly stirred, the temperature was raised to reflux, and the reaction was kept for 24 hours. During the reaction process, the material gradually dissolves, and the color of the solution gradually deepens;
[0053] 2) After the reaction is completed, the heating is stopped, and the reaction is cooled to 100 ℃ by itself. When the temperature dropped to room temperature, a large amount of white crystals separated out in the reaction bottle and were collected by suction filtration;
[0054] 3) Transfer the solid to another 1L four-necked flask equipped with a stirrer, a reflux condenser and a thermometer, add anhydrous ethanol twice the we...
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