Method for preparing 3-sulfonyl coumarin compound
A technology of sulfonyl coumarin and compounds, which is applied in the field of preparation of 3-sulfonyl coumarin compounds, can solve problems such as bad odor and unfavorable operation and use, achieve low cost, avoid the use of sulfonyl chloride intermediates, and use raw materials easy-to-achieve effects
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[0021] Example 1
[0022] Ia
[0023] Add DABCO to the reaction tube one by one . (SO 2 ) 2 (2.0 equivalents), phenyl phenylpropiolate (0.2 mmol), aryl diazonium salt (1.2 equivalents) and 1,2-dichloroethane (2 mL), under the protection of inert gas nitrogen or argon, in Stir at 40~60°C for 0.5-1.0 hours, until TLC detects the complete reaction, the reaction solution is directly concentrated and separated by column chromatography to obtain the corresponding 3-sulfonylcoumarin compound Ia.
[0024] 1 H NMR (400 MHz, CDCl 3 )δ8.01 (d, J = 8.0 Hz, 2H), 7.57-7.61 (m, 4H), 7.50 (t, J = 8.0 Hz,2H), 7.33-7.35 (m, 2H), 7.15 (s, 1H), 7.01 (d, J = 7.6Hz, 1H), 6.90 (d, J = 8.4Hz, 1H), 2.45 (s, 3H); 13 C NMR (100 MHz, CDCl 3 ) δ159.6, 155.8, 153.9, 146.8, 140.3, 133.5, 132.7, 129.6, 129.1, 129.0, 128.5, 128.0, 127.4, 126.1, 124.5, 117.8, 116.8, 21.8; HRMS calcd for C 22 H 17 O 4 S(M + +H): 377.0842, found: 377.0830.
Example Embodiment
[0025] Example 2
[0026] Ib
[0027] Add DABCO to the reaction tube one by one . (SO 2 ) 2 (2.0 equivalents), phenyl phenylpropiolate (0.2 mmol), aryl diazonium salt (1.2 equivalents) and 1,2-dichloroethane (2 mL), under the protection of inert gas nitrogen or argon, in Stir at 40~60°C for 0.5-1.0 hours, until TLC detects the complete reaction, the reaction solution is directly concentrated and separated by column chromatography to obtain the corresponding 3-sulfonylcoumarin compound Ib.
[0028] 1 H NMR (400 MHz, CDCl 3 )δ8.02 (d, J = 7.6 Hz, 2H), 7.58-7.64 (m, 2H), 7.51 (t, J = 7.6 Hz, 2H), 7.40 (d, J = 8.0 Hz, 2H), 7.34 (d, J = 8.4 Hz, 1H), 7.18-7.26 (m, 3H), 7.09 (d, J = 8.0Hz, 1H), 2.51 (s, 3H); 13 C NMR (100 MHz, CDCl 3 ) δ 159.9, 155.5, 153.8, 140.2, 139.2, 134.5, 133.5, 129.9, 129.4, 129.0, 128.8, 128.5, 127.4, 125.8, 124.7, 120.3, 116.7, 21.5; HRMS calcd forC 22 H 17 O 4 S(M + +H): 377.0842, found: 377.0841.
Example Embodiment
[0029] Example 3
[0030] Ic
[0031] Add DABCO to the reaction tube one by one . (SO 2 ) 2 (2.0 equivalents), phenyl phenylpropiolate (0.2 mmol), aryl diazonium salt (1.2 equivalents) and 1,2-dichloroethane (2 mL), under the protection of inert gas nitrogen or argon, in Stir at 40~60°C for 0.5-1.0 hours, until TLC detects the complete reaction, the reaction solution is directly concentrated and separated by column chromatography to obtain the corresponding 3-sulfonyl coumarin compound Ic.
[0032] 1 H NMR (400 MHz, CDCl 3 )δ 8.00 (d, J = 7.6 Hz, 2H), 7.60-7.67 (m, 2H), 7.52 (t, J = 8.0 Hz, 2H), 7.30-7.37 (m, 5H), 7.23 (t, J = 8.0 Hz, 1H), 7.05(d, J = 8.0 Hz, 1H); 13 C NMR (100 MHz, CDCl 3 ) δ 163.2 (d, 1 J F = 248.3), 158.5, 155.3, 153.8, 140.0, 134.8, 133.7, 129.6 (d, 2 J F =21.5 Hz), 129.5, 129.0, 128.6, 128.2, 126.2, 124.9, 120.0, 116.9, 115.5 (d, 2 J F =22.0 Hz);HRMS calcdfor C 21 H 14 FO 4 S(M + +H): 381.0591, found: 381.0588.
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