Marked cyclofenil derivative and referential compound and midbody thereof, and preparation method and application
A technology for compounds and derivatives, which is applied in the field of labeling drug derivatives and their reference compounds and intermediates, and can solve problems such as unsatisfactory imaging results
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Embodiment 1
[0064] Synthesis of embodiment 1 bromocyclofenil (cyclofenil) compound (compound I, X=Br, m=3, n=2):
[0065]
[0066] Add compound V (n=2) (500mg, 1.79mmol) into the three-necked flask, anhydrous K 2 CO 3 (1.20g, 8.8mmol), evacuate and pass N 2 Replacement, back and forth three times. Inject 30ml of acetone into it, control the temperature at 46°C, and stir for 0.5h. Then 1,4-dibromobutane (400mg, 1.86mmol) was slowly added dropwise thereto, and reacted for 8h under the same temperature conditions. The resulting pink cloudy solution. Filter and wash with saturated NaCl, extract with dichloromethane (3×20 mL), dry over anhydrous sodium sulfate, filter, and spin to dry the solvent. With V (petroleum ether): V (ethyl acetate) = 10:1 as the eluent, 185.2 mg of light yellow viscous product I was rapidly obtained through the flash column, with a yield of 25%.
[0067] Its identification data are as follows:
[0068] IR(KBr) v: 3264.47, 2921.43, 2843.59, 1609.53, 1503.29, ...
Embodiment 2
[0070] The synthesis of embodiment 2Cyclofenil-dipicolylamine (compound II, m=3, n=2)
[0071]
[0072] Add compound I (X=Br, m=3, n=2) (145mg, 0.35mmol) in a three-necked flask, anhydrous K 2 CO 3 (150 mg, 1.09 mmol). Vacuum through N 2 Replacement, back and forth three times, inject 20ml of acetone into it, and react at 44°C for 0.5h. Then compound VI 2,2'-dipicolylamine (120mg, 0.603mmol) was added thereto, and reacted for 18h. Extract with dichloromethane (3×20 mL), dry over anhydrous sodium sulfate, filter, and spin to dry the solvent. Elute through a flash column with V (dichloromethane): V (methanol) = 50: 1 or separate on a plate with V (dichloromethane): V (methanol) = 10: 1. Obtained 82.1mg of colorless viscous liquid, yield 44%;
[0073] Its identification data are as follows:
[0074] IR(KBr) v: 2921.23, 2843.59, 2108.92, 1605.45, 1501.29, 1429.74, 1237.68, 1160.05, 833.14, 763.80, 575.71cm -1 ;
[0075] 1 H NMR (CDCl 3 , 400MHz) δ: 8.50(d, J=4.8Hz, 2...
Embodiment 3
[0077] Embodiment 3 Cyclofennel dippicolylamine Re(CO) 3 Synthesis of Complex (Compound III, m=3, n=2)
[0078] 1. Rhenium tricarbonyl ([N(Et) 4 ] 2 [Re(CO) 3 Br 3 ], tetraethyl bromide ammonium tricarbonyl rhenium complex) synthesis (referring to the above literature)
[0079] Under the condition of nitrogen protection, weigh 0.2527g (0.6mmol) tetraethylamine bromide (Swiss Fluka company product) and 0.2076g (0.5mmol) bromopentacarbonyl rhenium (Swiss Fluka company product), add solvent diethylamine Glycol dimethyl ether 50.0mL was first slowly heated to 80°C under the condition of magnetic stirring, and the solid was completely dissolved after 10 minutes of reaction, and then heated to 120°C for 8 hours of reaction. At this time, a light yellow solid was formed in the solution. Filter while hot, wash with cold diglyme and anhydrous diethyl ether several times, and dry in a desiccator. After drying, the yellow powder was washed with absolute ethanol, filtered, and vacuu...
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