28 (s,1H), 7. 14-7. 07 (m, 4H), 7. 04 (d, / = 8. 4Hz, 1H), 3. 96 (s, 3H), 3. 95 (s, 3H).13CNMR(100MHz,CDC13)δ152.80, 152. 54, 150. 33, 150.07, 146.47, 146. 36, 130. 59, 130.55, 129.87, 129.83, 120.93, 120.86, 117.75, 117.68, 113.23, 109.98, 55. 30, 55. 27. 四、2, 3, 5-三(甲氧基苯基)硒吩7a-f的合成路線:
2, 3, 5-三(甲氧基苯基)硒吩8a-d的合成 將25mL的雙口瓶、磁子在110 °C下烘烤15min后,趁熱裝置,無水無氧操作,在通Ar下,稱取化合物12 (636. 2mg, 1.73mmol)溶于10mL無水甲苯和除氧去離子水的混 合溶劑(V:V=1:1)中,加入Na2C03 (366.7mg, 3· 46mmol)、Pd(PPh3)4(1· 595g,1. 38 mmol)和相應(yīng)的苯硼酸(4equiv.),120 °C下回流反應(yīng)24小時,冷卻至室溫;用乙酸乙 酯(3X20mL)萃取,有機(jī)相用飽和NaCl(20mL)洗滌,無水Na2S04干燥,旋干濾液,柱層 析分離,得到了甲氧基苯基取代的硒吩。
[0016] 2, 3, 5-三(4-甲氧基苯基)硒吩8a 化合物7a由4-甲氧基苯硼酸通過Suzuki偶聯(lián)反應(yīng)制備的。產(chǎn)率為41%,黃色的固 體,mp107-109。C;^NMR(400MHz,CDC13)J7.50-7.47 (d,2H),7.41 (s,1H), 7.24-7.17 (m, 4H), 6.91-6.86 (m, 2H), 6.83-6.79 (m, 2H), 6.78-6.74 (m, 2H), 3.80 (s,3H),3.78 (s,3H),3.76 (s,3H).13CNMR(100MHz,CDC13)J159.39, 158.86, 158.55, 147.37, 142.08, 139.86, 130.46, 130.37, 129.23, 129.04, 128.50, 127.26, 114.42, 113.96, 113.86, 55.38, 55.26, 55.24. 2, 3, 5-三(3-甲基-4-甲氧基苯基)硒吩8b 化合物8b由3-甲基-4-甲氧基苯硼酸通過Suzuki偶聯(lián)反應(yīng)制備的。產(chǎn)率為53%, 黃色的固體,mp 111-113 ° C). 4 NMR (400 MHz, CDC13) J 7.40 (s,1H), 7.35 (d, /= 8.0 Hz, 2H), 7.13 (d, / = 8.8 Hz, 2H),7.09-7.01 (m, 2H),6.80-6.76 (d, 1H), 6.68 (d, /=8.4 Hz, 2H), 3.83 (s, 3H), 3.80 (s, 3H), 3.78 (s, 3H),2.24 (s, 3H), 2.18 (s, 3H), 2.14 (s, 3H). 13C NMR (100 MHz, CDC13) J 157.55,156.96, 156.63, 147.21, 142.00, 139.75, 131.59, 131.39, 130.20, 128.85, 128.70, 128.48, 128.42, 127.69, 127.60, 127.07, 126.47, 126.29, 124.53, 110.21, 109.73, 109.72, 55.45, 55.31, 16.35, 16.29, 16.24. 2, 3, 5-三(3, 5-二甲基-4-甲氧基苯基)硒吩8c 化合物8c由3, 5-二甲基-4-甲氧基苯硼酸通過Suzuki偶聯(lián)反應(yīng)制備的。產(chǎn)率為46%, 黃色的固體,mp 102-104 ° C). 4 NMR(400 MHz, CDC13)J7.42 (s,1H), 7.22 (s, 2H), 6.94 (d, /= 8.8 Hz, 4H), 3.73 (s, 3H), 3.72 (s, 3H), 3.70 (s, 3H), 2.31 (s,6H),2.21 (s,6H),2.18 (s,6H).13CNMR(100MHz,CDC13)J156.84,156.33, 156.00, 147.25, 142.80, 140.09, 133.45, 131.98, 131.90, 131.36, 130.63, 130. 47, 129. 62, 129. 03, 126. 50, 59. 78, 59. 74, 16. 22, 16. 09, 16. 07. 2, 3, 5-三(3-氯-4-甲氧基苯基)硒吩8d 化合物8d由3-氯-4-甲氧基苯硼酸通過Suzuki偶聯(lián)反應(yīng)制備的。產(chǎn)率為38%,黃色的 固體,mp71-73 ° 0?NMR(400MHz,CDC13)J7.57 (d,/= 8.0Hz, 1H),7.40-7.36 (m, 2H), 7.35 (d, /=8.0 Hz, 1H), 7.31 (d, / = 8.4Hz, 1H), 7.08-7.03 (m, 2H), 6.91 (d, /=8.8 Hz, 2H), 6.84-6.76 (m, 2H), 3.92 (s, 3H), 3.89 (s, 3H), 3.88 (s, 3H).13CNMR(100MHz,CDC13)δ154.71, 154.37, 154.07, 146.64, 141.66, 139.11, 130.75, 130.61, 130.59, 129.61, 129.22, 128.61, 128.56, 127.56, 125.48, 123.00, 122.44, 122.31, 112.33, 111.94, 111.92, 56.27, 56.16, 56.15. 五、羥基苯基硒吩類化合物的制備 Ar保護(hù)下,通過A、B、C和D路線合成得到的2, 5-二(甲氧基苯基)硒吩5a-j、3, 4-二 (4-甲氧基苯基)硒吩6a-d、3-溴-2, 5-二(甲氧基苯基)硒吩7a-f和2, 3, 5-三(甲氧 基苯基)硒吩8a_d用三溴化硼脫甲基得到了羥基產(chǎn)物9a-j、10a-d、lla_f和12a_d,反應(yīng) 式如下面所示:
其中, R0為 4-OMe或 5-0Me; 札為4-0H或5-0H;
R3為H、2-Me、3-Me、3, 5-diMe、2, 6-diMe、2-F、3-F、4-F、2-C1 或 3-C1。
[0017] 實施例1 :2, 5-二(4-羥基苯基)硒吩(9a)的制備
Ar保護(hù)下,稱取2, 5-二(甲氧基苯基)硒吩(326. 7mg,0· 95mmol)溶解在10mL無水二氯甲烷中,-20 °C下以0. 2毫升/秒的速度加入三溴化硼(240. 1mg,2. 86mmol), 繼續(xù)反應(yīng)12小時后,加入1mL水淬滅反應(yīng),用乙酸乙酯(3X25mL)萃取,有機(jī)相用飽 和NaHC03 (20mL)洗滌,無水Na2S04干燥,減壓脫除溶劑得到粗產(chǎn)物,用二氯甲烷(3X 15mL)洗滌得到了 215.6mg藍(lán)色固體,產(chǎn)率為 72%,mp137-139°C. 4NMR(400MHz, Acetone-4) ^7.46 (d, / = 8.8Hz, 4H), 7.36 (s, 2H), 6.89-6.85 (m, 4H).13CNMR (100MHz,Acetone-4)i? 158. 22, 149.14, 129.01, 127.89, 125.60, 116.70.HRMS (MALDI/DHB)calcdforC16H1302Se(M+H+) 316. 0053,found316. 0057. 實施例2 :2, 5-二(2-甲基-4-羥基苯基)硒吩(9b)的制備
制備方法如實施例1,產(chǎn)物為黃色固體,產(chǎn)率為86%,mp176-178 °C. 4NMR(400MHz, Acetone-4) δ 8.48 (s, 2Η), 7.25 (d, / = 8.4Hz, 2H), 7.13-7.10 (s, 2H), 6.79 (d, /= 8.8 Hz, 2H), 6.73 (d, / = 8.4 Hz, 2H), 2.40 (d, /= 8. 4Hz, 6H).13C NMR (100MHz,Acetone-4)5 157.95, 149.73, 137.59, 132.39, 129.06, 128.40, 118.33,113.92,21.61.HRMS(MALDI/DHB)calcdforClsH1702Se(M+H+) 344.0444,found344. 0448. 實施例3 :2, 5-二(3-甲基-4-羥基苯基)硒吩(9c)的制備
制備方法如實施例1,產(chǎn)物為藍(lán)色固體,產(chǎn)率為88%,mp194-196 °C. 4NMR(400MHz, Acetone-4) δ 8.46 (s, 2Η), 7.37 (d, / = 8.0Hz, 2H), 7.33 (s, 2H), 7.27 (d, /= 8.8Hz, 2H), 6.85 (d, / = 8.4Hz, 2H), 2.24 (s, 6H).13CNMR(100MHz,Acetone-4)5 156.19, 149.19, 129.12, 129.05, 125.77, 125.43, 125.20, 116.00, 16. 27.HRMS(MALDI/DHB)calcdforC18H1702Se(M+H+) 344. 0444,found344. 0448. 實施例4 :2, 5-二(3, 5-二甲基-4-羥基苯基)硒吩(9d)的制備
制備方法如實施例1,產(chǎn)物為藍(lán)色粉末,產(chǎn)率為86%,268-270 °C. 4NMR(400MHz,Acetone-4)δ 7.50 (s, 2Η), 7.34 (s, 2Η), 7.22 (s, 4Η), 2.27 (s, 12H).13CNMR (101MHz,Acetone-4)J154. 14,149. 24,129. 00,126. 74,125. 39,125. 36,16. 67. HRMS(MALDI/DHB)calcdforC20H2102Se(M+H+) 372. 0757,found372. 0761. 實施例5 :2, 5-二(2, 6-二甲基-4-羥基苯基)硒吩(9e)的制備
制備方法如實施例1,產(chǎn)物為黃色粉末,產(chǎn)率為85%,mp213-215 °C). 4NMR(400 MHz,Acetone-4)5 8.31 (s, 2H), 6.90 (s, 2H), 6.63 (s, 4H), 2.18 (s, 12H).13C NMR(100MHz,Acetone-4)5 157.87, 149.82, 139.52, 129.88, 127.91, 115.07, 21. 16.HRMS(MALDI/DHB)calcdforC20H2102Se(M+H+) 372. 0754,found372. 0761. 實施例6 :2, 5-二(2-氟-4-羥基苯基)硒吩(9f)的制備
制備方法如實施例1,產(chǎn)物為藍(lán)色粉末,產(chǎn)率為78%,mp206-208 °C. 4NMR(400MHz,Acetone-4)δ 9.18 (s, 2H), 7.63 (d, / = 8.9Hz, 2H), 7.59 (d, / = 8.4 Hz, 2H), 6.77 (d, / = 8.8Hz, 2H), 6.73 (d, / = 8.8Hz, 2H).13CNMR(100MHz, Acetone-4)5 159.26, 129.84, 129.78, 127.37, 127.73, 113.24, 104.21, 103.96. HRMS(MALDI/DHB)calcdforC16Hn02F2Se(M+H+) 351. 9942found351. 9946. 實施例7 :2, 5-二(2-氯-4-羥基苯基)硒吩(9g)的制備
制備方法如實施例1,產(chǎn)物為藍(lán)色粉末,產(chǎn)率74%,mp160 - 162 °C). 4NMR(400MHz,Acetone-4) ^9.21 (s, 2H), 7.52 (d, / = 8.8Hz, 2H), 7.44 (s, 2H), 7.03 (d,/= 8.8Hz, 2H),6.90 (d,/= 8.4Hz, 2H).13CNMR(100MHz,Acetone-4) δ155.03, 153.51, 153.01, 149.92, 131.55, 129.93, 129.42, 128.54, 127.62, 126.83, 126.53, 126.13, 118.09, 117.64, 117.25.HRMS(MALDI/DHB)calcdfor C16HnF202Se(M+H+) 384.9351found384.9355. 實施例8 :2, 5-二(3-氯-4-羥基苯基)硒吩(9h)的制備
制備方法如實施例1,產(chǎn)物為藍(lán)色粉末,產(chǎn)率為73%,mp168-170 °C).蟲NMR(400MHz,CD30D)δ7. 46 (d, / = 8. 4Hz, 1H), 7. 40 (d, / = 8. 8Hz, 1H), 7. 30 (d,J= 8.4Hz, 1H), 7.26 (d, / = 8.0Hz, 1H), 7.23 (t, /=8.0Hz, 1H), 7.21 (s, 2H), 6. 87 (d, / = 8. 4Hz, 1H), 6. 79 (t, / = 8. 4Hz, 2H).13CNMR(100MHz,CD30D)δ 158.63, 147.03, 132.73, 132.66, 129.62, 127.03, 117.84, 115.89.HRMS(MALDI/ DHB)calcdfo