A kind of preparation method of α-azide aryl ketone derivative
A technology for azide aryl ketone and derivatives, which is applied in the field of preparation of α-azide aryl ketone derivatives, can solve the problems of reporting alkene azide/oxidation reaction methods and the like, and achieves the effects of simple operation and easy purification
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Embodiment 1
[0032]
[0033] To a Schlenk bottle was added the olefin of formula 1a (41.6 mg, 0.4 mmol), azidotrimethylsilane (TMSN 3 , 138.0 mg, 1.2 mmol), di-tert-butyl peroxide (DTBP, 116.8 mg, 0.8 mmol), and then added solvent water (H 2 0, 2mL), then the reactor was stirred and reacted under an oxygen atmosphere, 25 ° C, the reaction progress was monitored by TLC until the raw materials disappeared (the reaction time was 36 hours), after the reaction was completed, the reaction solution was extracted three times with ethyl acetate, The organic phase was dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure to remove the solvent, and the residue was separated by column chromatography (eluting solvent: ethyl acetate / n-hexane) to obtain the target product I-1. (26% yield); 1 H NMR (500MHz, CDCl 3 )δ: 7.92-7.90(m, 2H), 7.63(t, J=7.0Hz, 1H), 7.50(t, J=7.5Hz, 2H), 4.57(s, 2H); 13 C NMR (125MHz, CDCl 3 )δ: 193.2, 134.4, 134.2, 129.0, 127.9, 54.9.
Embodiment 2
[0035] silver carbonate (Ag 2 CO 3 , 219.1 mg, 0.8 mmol) instead of di-tert-butyl peroxide, and other conditions were the same as in Example 1, and the yield of the target product I-1 was 63%.
Embodiment 3
[0037] With the oxidizing agent iodobenzene acetate (PhI(OAc) 2 , 257.4 mg, 0.8 mmol) instead of di-tert-butyl peroxide, and other conditions were the same as in Example 1, and the yield of the target product I-1 was 47%.
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