Hydrogenated cyclic band [8] arene compound and preparation method thereof
A compound and oxidation reaction technology, which is applied in the preparation of hydroxyl compounds, the preparation of organic compounds, and the production of hydrocarbons from oxygen-containing organic compounds, etc., can solve problems that need to be further studied, and achieve easy separation and purification, good practicability and application prospects. The effect of mild reaction conditions
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Embodiment 1
[0058] Embodiment 1: Preparation of compound (Ia) (R in the corresponding formula (I) 1 for CH 3 ; 2 for CH 3 ; 3 for Et)
[0059] The reaction formula is as follows:
[0060]
[0061] The specific preparation method is:
[0062] Add 0.3mmol (190mg) of the compound represented by formula (IIa) and 60mL of dichloroethane into a 100mL Shrek bottle, and slowly add 0.15mmol (0.025mL) trifluoromethanesulfonic anhydride along the wall of the bottle using a micro-sampler at room temperature , Reaction at room temperature for 6h. After the reaction was completed, water was added to quench, the aqueous phase was extracted with dichloromethane, the organic phases were combined and washed with saturated sodium chloride solution, and then dried over anhydrous sodium sulfate. The solvent was spin-dried and separated by column chromatography (silica gel 100-200 mesh, eluent: petroleum ether / dichloromethane=10 / 1) to obtain 131 mg of the compound represented by formula (VIIa), with ...
Embodiment 2
[0080] Embodiment 2: preparation compound (Ib) (R in corresponding formula (I) 1 for CH 3 ; 2 for CH 3 ; 3 for n-C 5 h 11 )
[0081] The reaction formula is as follows:
[0082]
[0083] The specific preparation method is:
[0084] Add 0.2mmol (160mg) of the compound represented by formula (IIb) and 40mL of dichloroethane into a 100mL Shrek bottle, and slowly add 0.1mmol (0.017mL) trifluoromethanesulfonic anhydride along the wall of the bottle using a micro-sampler at room temperature , Reaction at room temperature for 27h. After the reaction was completed, water was added to quench, the aqueous phase was extracted with dichloromethane, the organic phases were combined and washed with saturated sodium chloride solution, and then dried over anhydrous sodium sulfate. The solvent was spin-dried and separated by column chromatography (silica gel 100-200 mesh, eluent: petroleum ether / dichloromethane=15 / 1) to obtain 123 mg of the compound represented by formula (VIIb), w...
Embodiment 3
[0117] Embodiment 3: preparation compound (Ic) (R in corresponding formula (I) 1 for CH 3 ; 2 for CH 3 ; 3 for i-C 3 h 7 )
[0118] The reaction formula is as follows:
[0119]
[0120] The specific preparation method is:
[0121] Add 0.05mmol (34.4mg) of the compound represented by formula (IIc) and 10mL of dichloroethane to a 25mL Shrek bottle, and slowly add 0.1mmol (0.017mL) trifluoromethanesulfonate along the wall of the bottle using a micro-sampler at room temperature Anhydride, reaction at room temperature for 48h. After the reaction was completed, water was added to quench, the aqueous phase was extracted with dichloromethane, the organic phases were combined and washed with saturated sodium chloride solution, and then dried over anhydrous sodium sulfate. The solvent was spin-dried and separated by column chromatography (silica gel 100-200 mesh, eluent: petroleum ether / dichloromethane=30 / 1) to obtain 24.6 mg of the compound represented by formula (VIIc), wi...
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