Advanced rotaxane and synthesis method thereof
A synthetic method and rotaxane technology, applied in the field of synthesis of organic compounds, can solve the problems of slow reaction and low yield, and achieve the effect of fast reaction rate and suitable reaction conditions
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[0018] The synthetic route is as follows:
[0019]
[0020] Dibenzo-24-crown-8 (250 mg, 0.56 mmol) and N-(anthracen-9-ylmethyl)-3-(4-cyanophenoxy)propan-1-ammonium hexafluorophosphate (285 mg, 0.56 mmol) was dissolved in 10 ml of dichloromethane and stirred at room temperature for 3 hours. Add trifluoromethanesulfonic acid (85 mg, 0.56 mmol) to the above reaction solution, stir overnight at room temperature, quench the reaction solution with ice water, extract with dichloromethane (2×50 ml), wash with water, and separate the organic layer , dried over anhydrous sodium sulfate, and spin off the solvent under reduced pressure to obtain a branched rotaxane (465 mg), with a yield of 87%. 1 H NMR (400MHz, CD 3 D) δ: 1 H NMR (400 MHz, CDCl 3, 295K): δ 8.64 (d, J = 8.8 Hz, 6H), 8.48 (s, 3H), 8.27-8.23 (m, 6H), 7.97 (d, J = 8.4 Hz, 6H), 7.90 (d, J = 8.0 Hz, 6H), 7.65-7.41 (m, 24H), 6.91-6.85 (m,12H), 6.75-6.71 (m, 6H), 6.60 (d, J = 8.8 Hz, 6H), 6.48-6.46 (m, 6H), 5.5...
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