A kind of method that solvent participates in reaction synthesis 4-acetyl-1,2,3-triazole compound
A triazole compound and acetyl group technology, which is applied in the field of organic and pharmaceutical synthesis, can solve the problems of harsh reaction conditions, difficult synthesis, high reaction temperature, etc., and achieve the effects of mild reaction conditions, wide substrate range and high reaction efficiency
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Embodiment 1
[0020] Synthesis of (N-benzyl-1,2,3-triazole-4-substituted)(phenyl)methanone:
[0021] The reaction formula is:
[0022]
[0023] The specific steps are: add 0.33mmol acetophenone, 0.50mmol benzyl azide, 0.09mmol Cu(NO 3 ) 2 , 1 mmol K 2 S 2 o 8 , 0.09mmol TMEDA, 3mL DMA, after magnetic stirring at 110°C for 5 hours, the reaction solution was extracted with ethyl acetate, the organic layer was washed with saturated brine, dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure to obtain crude The product, the crude product was purified by column separation and purification with ethyl acetate / petroleum ether=1:5 (V / V) as the eluent to obtain the desired product, which was a white solid with a yield of 83%.
[0024] The proton nuclear magnetic spectrogram result of gained product is: 1 H NMR (600MHz, CDCl 3 )δ8.46–8.39(m,1H),8.17(s,1H),7.61(m,J=10.8,3.9Hz,1H),7.51(t,J=7.8Hz,1H),7.40(d,J =6.9Hz,1H),7.33(d,J=7.5Hz,1H),5.60(s,1H).
Embodiment 2
[0026] (N-benzyl-1,2,3-triazole-4-substituted) (4-methoxyphenyl) ketone synthesis, the reaction formula is:
[0027]
[0028] The specific steps are: add 0.33mmol 4-methoxyacetophenone, 0.50mmol benzyl azide, 0.09mmol Cu(NO 3 ) 2 , 1 mmol K 2 S 2 o 8 , 0.09mmol TMEDA, 3mL DMA, after magnetic stirring at 110°C for 5 hours, the reaction solution was extracted with ethyl acetate, the organic layer was washed with saturated brine, dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure to obtain crude The product, the crude product was purified by column separation and purification with ethyl acetate / petroleum ether=1:5 (V / V) as the eluent to obtain the desired product, which was a white solid with a yield of 85%.
[0029] The proton nuclear magnetic spectrogram result of the product of gained is: 1 H NMR (600MHz, CDCl 3 )δ8.34(d, J=8.1Hz, 2H), 8.16(s, 1H), 7.33(m, 7H), 5.59(s, 2H), 3.41(s, 3H).
Embodiment 3
[0031] (N-benzyl-1,2,3-triazole-4-substituted) (4-fluorophenyl) ketone synthesis, the reaction formula is:
[0032]
[0033] The specific steps are: add 0.33mmol 4-fluoroacetophenone, 0.50mmol benzyl azide, 0.09mmol Cu(NO 3 ) 2 , 1 mmol K 2 S 2 o 8 , 0.09mmol TMEDA, 3mL DMA, after magnetic stirring at 110°C for 5 hours, the reaction solution was extracted with ethyl acetate, the organic layer was washed with saturated brine, dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure to obtain crude The product, the crude product was purified by column separation and purification with ethyl acetate / petroleum ether=1:5 (V / V) as the eluent to obtain the desired product, which was a white solid with a yield of 87%.
[0034] The proton nuclear magnetic spectrogram result of the product of gained is: 1H NMR (600MHz, CDCl 3 )δ8.53(m,2H),8.18(s,1H),7.45–7.31(m,5H),7.21–7.14(m,2H),5.61(s,2H).
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