CN109422605B - 一种硝基烯烃合成菲类化合物的方法 - Google Patents
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- C—CHEMISTRY; METALLURGY
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
- C07C1/32—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from compounds containing hetero-atoms other than or in addition to oxygen or halogen
- C07C1/321—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from compounds containing hetero-atoms other than or in addition to oxygen or halogen the hetero-atom being a non-metal atom
- C07C1/323—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from compounds containing hetero-atoms other than or in addition to oxygen or halogen the hetero-atom being a non-metal atom the hetero-atom being a nitrogen atom
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Abstract
本发明提供了一种合成菲类化合物的方法。所述合成方法是式(Ⅰ)所示的2‑苯基硝基烯烃类化合物或式(Ⅱ)所示的2‑噻吩基硝基烯烃为起始物,在碱性物质、银催化剂、氧化剂、溶剂的作用下,于60℃~100℃下反应4~12小时,反应液经分离纯化制备得到相应的式(Ⅲ)或式(Ⅳ)所示的菲类化合物;本发明的合成方法具有对环境危害小,反应条件温和,操作简便等特点。
Description
技术领域
本发明涉及一种有机化合物的合成方法,具体地说涉及与一种合成菲类化合物的制备方法。
背景技术
菲是一类非常重要的稠环化合物,这类化合物经氧化制菲醌、经氧化得到的联苯酸可用于制聚酯树脂、醇酸树脂;菲氧化可以得到苯酐、环已酮、苯酚;在造纸上,菲可作纸浆防雾剂;在医药上,菲可合成生物碱;在染料工业上,菲可制取2-氨基菲醌,苯绕蒽酮,硫化还原染料等;菲在高温高压下加氢可得到氢菲,是高级喷气式飞机的燃料。
在工业上,菲一般都是从石油中直接精馏得到,这不仅仅无法做到绿色环保,而且没办法保证可持续的发展。同时在精馏的过程中又要消耗大量的能源,所以寻找一条简单快捷的合成菲类化合物的方法是非常重要的。在之前的方法主要有:(1)通过二苯乙烯在碘化钾的催化下合成菲(见Journal of Organic Chemistry,2016,7799-7806); (2)通过2-苯基苯乙炔在钌催化剂的作用下合成菲类化合物(见 Chemistry-A European Journal,2015,7245-7255);(3)通过2,2'-双(溴甲基)-1,1'-联苯在DMSO溶剂中高温反应合成菲类化合物(见 Tetrahedron Letters,2012,4692-4696;)。之前的方法都需要高温,或者需要贵金属和配体同时参与反应才能合成菲类化合物。所以寻找一条合成菲类化合物的有效的途径是十分有必要的。
发明内容
针对现有技术的不足,本发明为,提供了一种通用,简便,高效的合成菲类化合物的方法。
本发明的技术方案是:
一种合成式(Ⅲ)或式(Ⅳ)所示的菲类化合物的方法,其所述方法为:以式(Ⅰ)所示取代2-苯基硝基烯烃类化合物或式(Ⅱ)所示的2-噻吩基硝基烯烃为起始物,在碱性物质、银催化剂、氧化剂、溶剂的作用下,于60℃~100℃下反应4~12小时,反应液经分离纯化制备得到相应的式(Ⅲ)或式(Ⅳ)所示的菲类化合物;
式(Ⅰ)或式(Ⅲ)中,R为H、氯、甲氧基或苯基。
式(Ⅰ)制备式(Ⅲ)化合物的反应式如下:
式(Ⅱ)制备式(Ⅳ)化合物的反应式如下:
进一步,本发明所述的银催化剂为硝酸银、亚硝酸银、氧化银中的一种或多种。
更进一步,所述银催化剂的物质的量为所述起始物物质的量的 10%~30%,最优选为20%。
本发明所述的氧化剂为二醋酸碘苯、叔丁基过氧化氢、过硫酸钾中的一种或多种。
进一步,所述氧化剂的物质的量为所述起始物物质的量的100%~ 300%,最优选为200%。
本发明所述的碱性物质为三氟甲磺酸钠、碳酸钠、氢氧化钠、叔丁醇钠的一种。
进一步,所述碱性物质的物质的量为所述起始物物质的量的 100%-300%,最优选为200%。
本发明所述的溶剂为乙腈、四氢呋喃、二氯甲烷中的一种或多种,最佳为乙腈。
进一步,所述溶剂的体积以所述起始物的物质的量计为 1~2mL/mmol。
本发明所述反应的反应温度为60℃~100℃,最佳反应温度为80℃。
本发明所述反应的反应时间为4~12小时,最佳反应时间为6小时。
本发明所述的所述分离纯化为:反应液中加入柱层析硅胶,并通过减压蒸馏除去溶剂,再通过柱色谱分离,以石油醚与乙酸乙酯体积比为100:1的混合液作为洗脱剂洗脱,收集含目标产物的洗脱液,蒸除溶剂得到目标产物。
进一步,所述柱层析硅胶为100~200目,其用量以所述起始物物质的量计为0.5g/mmol。
优选地,本发明所述式(Ⅲ)化合物为下列化合物之一:
具体地,本发明所述方法推荐为:将2-苯基硝基烯烃0.3mmol、三氟甲磺酸钠0.6mmol、硝酸银0.06mmol、过硫酸钾0.6mmol 和重蒸乙腈3mL加入到15mL反应管中,将混合液置于80℃下反应6小时。反应结束后,冷却至室温,转移至单口圆底烧瓶25mL 中,加100-200目硅胶旋干过柱得菲。
与现有技术相比,本发明的有益效果是:
(1)安全环保,不产生废气废水;
(2)底物适应性好,各种取代基都可以实现芳构化;
(3)反应条件温和;
(4)此发明相比工业上从石油中提取菲的过程,更加节能,不需要通过精馏分离。
具体实施方式
下面结合具体实施例对本发明作进一步详细说明,但本发明的保护范围不限于此:
实施例1
将0.3mmol 2-苯基硝基烯烃、0.6mmol三氟甲磺酸钠、0.6m mol过硫酸钾和0.06mmol硝酸银加入到15mL厚壁耐压反应管中,再加入3mL乙腈作溶剂。接着,于80℃下磁力搅拌6小时。冷却至室温后,在反应液中加入两药匙柱层析硅胶(100-200目),并通过减压蒸馏除去溶剂,再通过柱色谱分离得到产物纯品(以石油醚/乙酸乙酯=100:1作为洗脱剂)。该物质为白色固体,产率88%。
表征数据:1H NMR(500MHz,CDCl3):δ8.69(d,J=8.0Hz, 2H),7.90-7.80(d,J=8.0Hz,2H),7.74(s,2H),7.67-7.63(t,J=16.0Hz,2H),7.61-7.57(t,J=16.0Hz,2H).13CNMR(125MH z,CDCl3)δ132.08,130.33,128.61,128.06,126.95,126.60,122.6 9.
实施例2
将0.3mmol 2-苯基硝基烯烃、0.6mmol三氟甲磺酸钠、0.6m mol二醋酸碘苯和0.06mmol硝酸银加入到15mL厚壁耐压反应管中,再加入3mL乙腈作溶剂。接着,于80℃下磁力搅拌6小时。冷却至室温后,在反应液中加入两药匙柱层析硅胶(100-200目),并通过减压蒸馏除去溶剂,再通过柱色谱分离得到产物纯品(以石油醚/乙酸乙酯=100:1作为洗脱剂)。该物质为白色固体,产率70%。
表征数据:1H NMR(500MHz,CDCl3):δ8.69(d,J=8.0Hz, 2H),7.90-7.80(d,J=8.0Hz,2H),7.74(s,2H),7.67-7.63(t,J= 16.0Hz,2H),7.61-7.57(t,J=16.0Hz,2H).13CNMR(125MH z,CDCl3)δ132.08,130.33,128.61,128.06,126.95,126.60,122.6 9.
实施例3
将0.3mmol 2-苯基硝基烯烃、0.6mmol碳酸钠、0.6mmol过硫酸钾和0.09mmol硝酸银加入到15mL厚壁耐压反应管中,再加入3mL乙腈作溶剂。接着,于80℃下磁力搅拌6小时。冷却至室温后,在反应液中加入两药匙柱层析硅胶(100-200目),并通过减压蒸馏除去溶剂,再通过柱色谱分离得到产物纯品(以石油醚/乙酸乙酯=100:1作为洗脱剂)。该物质为白色固体,产率47%。
表征数据:1H NMR(500MHz,CDCl3):δ8.69(d,J=8.0Hz, 2H),7.90-7.80(d,J=8.0Hz,2H),7.74(s,2H),7.67-7.63(t,J= 16.0Hz,2H),7.61-7.57(t,J=16.0Hz,2H).13CNMR(125MH z,CDCl3)δ132.08,130.33,128.61,128.06,126.95,126.60,122.6 9.
实施例4
将0.3mmol 2-(3-苯基)苯基硝基烯烃、0.6mmol三氟甲磺酸钠、0.6mmol过硫酸钾和0.06mmol硝酸银加入到15mL厚壁耐压反应管中,再加入3mL乙腈作溶剂。接着,于80℃下磁力搅拌6 小时。冷却至室温后,在反应液中加入两药匙柱层析硅胶(100-200 目),并通过减压蒸馏除去溶剂,再通过柱色谱分离得到产物纯品(以石油醚/乙酸乙酯=100:1作为洗脱剂)。该物质为白色固体,产率76%。
表征数据:1H NMR(500MHz,CDCl3)δ8.93(d,J=1.0Hz, 1H),8.81(d,J=8.0Hz,1H),8.00(d,J=8.0Hz,1H),7.94(dd, J1=7.8,J2=0.9Hz,1H),7.88(dd,J1=8.2,J2=1.7Hz,1H),7.84-7. 81(m,2H),7.78(t,J=12.0Hz,2H),7.72-7.69(m,1H),7.67-7.6 3(m,1H),7.57(t,J=7.6Hz,2H),7.46(t,J=7.4Hz,1H).13C NMR(100MHz,CDCl3):δ141.61,139.46,132.38,131.26,130.60, 130.47,129.10,128.99,128.75,127.69,127.48,127.09,126.77,12 6.68,126.64,126.08,122.75,121.20
实施例5
将0.3mmol2-(3-苯基)苯基硝基烯烃、0.6mmol三氟甲磺酸钠、0.6mmol过硫酸钾和0.06mmol亚硝酸银加入到15mL厚壁耐压反应管中,再加入3mL乙腈作溶剂。接着,于80℃下磁力搅拌 6小时。冷却至室温后,在反应液中加入两药匙柱层析硅胶(100-20 0目),并通过减压蒸馏除去溶剂,再通过柱色谱分离得到产物纯品 (以石油醚/乙酸乙酯=100:1作为洗脱剂)。该物质为白色固体,产率 40%。
表征数据:1H NMR(500MHz,CDCl3)δ8.93(d,J=1.0Hz, 1H),8.81(d,J=8.0Hz,1H),8.00(d,J=8.0Hz,1H),7.94(dd, J1=7.8,J2=0.9Hz,1H),7.88(dd,J1=8.2,J2=1.7Hz,1H),7.84-7. 81(m,2H),7.78(t,J=12.0Hz,2H),7.72-7.69(m,1H),7.67-7.6 3(m,1H),7.57(t,J=7.6Hz,2H),7.46(t,J=7.4Hz,1H).13C NMR(100MHz,CDCl3):δ141.61,139.46,132.38,131.26,130.60, 130.47,129.10,128.99,128.75,127.69,127.48,127.09,126.77,12 6.68,126.64,126.08,122.75,121.20.
实施例6
将0.3mmol 2-(3-苯基)苯基硝基烯烃、0.6mmol三氟甲磺酸钠、0.9mmol过硫酸钾和0.06mmol硝酸银加入到15mL厚壁耐压反应管中,再加入3mL乙腈作溶剂。接着,于80℃下磁力搅拌6 小时。冷却至室温后,在反应液中加入两药匙柱层析硅胶(100-200 目),并通过减压蒸馏除去溶剂,再通过柱色谱分离得到产物纯品(以石油醚/乙酸乙酯=100:1作为洗脱剂)。该物质为白色固体,产率63%。
表征数据:1H NMR(500MHz,CDCl3)δ8.93(d,J=1.0Hz, 1H),8.81(d,J=8.0Hz,1H),8.00(d,J=8.0Hz,1H),7.94(dd, J1=7.8,J2=0.9Hz,1H),7.88(dd,J1=8.2,J2=1.7Hz,1H),7.84-7. 81(m,2H),7.78(t,J=12.0Hz,2H),7.72-7.69(m,1H),7.67-7.6 3(m,1H),7.57(t,J=7.6Hz,2H),7.46(t,J=7.4Hz,1H).13C NMR(100MHz,CDCl3):δ141.61,139.46,132.38,131.26,130.60, 130.47,129.10,128.99,128.75,127.69,127.48,127.09,126.77,12 6.68,126.64,126.08,122.75,121.20.
实施例7
将0.3mmol 2-(3-氯)苯基硝基烯烃、0.6mmol三氟甲磺酸钠、 0.6mmol过硫酸钾和0.06mmol硝酸银加入到15mL厚壁耐压反应管中,再加入3mL乙腈作溶剂。接着,于80℃下磁力搅拌6 小时。冷却至室温后,在反应液中加入两药匙柱层析硅胶(100-200 目),并通过减压蒸馏除去溶剂,再通过柱色谱分离得到产物纯品(以石油醚/乙酸乙酯=100:1作为洗脱剂)。该物质为白色固体,产率60%。
表征数据:1H NMR(500MHz,CDCl3):δ8.64(s,1H),8.59(d, J=8.0Hz,1H),7.89(d,J=8.0Hz,1H),7.81(d,J=8.0Hz,1 H),7.72-7.64(m,4H),7.54(d,J=8.0Hz,1H).13CNMR(125M Hz,CDCl3):δ132.60,132.27,131.43,130.32,129.95,129.35,128. 66,127.26,127.23,127.11,126.90,126.24,122.73,122.42.
实施例8
将0.3mmol 2-(3-氯)苯基硝基烯烃、0.9mmol三氟甲磺酸钠、 0.6mmol过硫酸钾和0.06mmol硝酸银加入到15mL厚壁耐压反应管中,再加入3mL乙腈作溶剂。接着,于80℃下磁力搅拌6 小时。冷却至室温后,在反应液中加入两药匙柱层析硅胶(100-200 目),并通过减压蒸馏除去溶剂,再通过柱色谱分离得到产物纯品(以石油醚/乙酸乙酯=100:1作为洗脱剂)。该物质为白色固体,产率47%。
表征数据:1H NMR(500MHz,CDCl3):δ8.64(s,1H),8.59(d, J=8.0Hz,1H),7.89(d,J=8.0Hz,1H),7.81(d,J=8.0Hz,1 H),7.72-7.64(m,4H),7.54(d,J=8.0Hz,1H).13CNMR(125M Hz,CDCl3):δ132.60,132.27,131.43,130.32,129.95,129.35,128. 66,127.26,127.23,127.11,126.90,126.24,122.73,122.42.
实施例9
将0.3mmol 2-(3-氯)苯基硝基烯烃、0.6mmol三氟甲磺酸钠、 0.6mmol过硫酸钾和0.03mmol硝酸银加入到15mL厚壁耐压反应管中,再加入3mL二氯甲烷作溶剂。接着,于80℃下磁力搅拌 6小时。冷却至室温后,在反应液中加入两药匙柱层析硅胶(100-20 0目),并通过减压蒸馏除去溶剂,再通过柱色谱分离得到产物纯品 (以石油醚/乙酸乙酯=100:1作为洗脱剂)。该物质为白色固体,产率 44%。
表征数据:1H NMR(500MHz,CDCl3):δ8.64(s,1H),8.59(d, J=8.0Hz,1H),7.89(d,J=8.0Hz,1H),7.81(d,J=8.0Hz,1 H),7.72-7.64(m,4H),7.54(d,J=8.0Hz,1H).13CNMR(125M Hz,CDCl3):δ132.60,132.27,131.43,130.32,129.95,129.35,128. 66,127.26,127.23,127.11,126.90,126.24,122.73,122.42.
实施例10
将0.3mmol 2-(2-甲氧基)苯基硝基烯烃、0.6mmol三氟甲磺酸钠、0.6mmol过硫酸钾和0.06mmol硝酸银加入到15mL厚壁耐压反应管中,再加入3mL乙腈作溶剂。接着,于80℃下磁力搅拌6小时。冷却至室温后,在反应液中加入两药匙柱层析硅胶(100-20 0目),并通过减压蒸馏除去溶剂,再通过柱色谱分离得到产物纯品 (以石油醚/乙酸乙酯=100:1作为洗脱剂)。该物质为白色固体,产率 92%。
表征数据:1H NMR(500MHz,CDCl3)δ9.71(d,J=8.6Hz, 1H),7.92(dd,J1=7.8,J2=1.3Hz,1H),7.75(q,J=8.8Hz,2 H),7.71-7.65(m,1H),7.65-7.59(m,1H),7.57-7.53(m,2H),7.21-7. 15(m,1H),4.15(s,3H).13C NMR(125MHz,CDCl3):δ158.90, 134.69,132.79,130.40,128.68,128.32,128.04,127.16,126.56,12 6.45,125.92,121.59,120.82,108.33,55.75.
实施例11
将0.3mmol 2-(2-甲氧基)苯基硝基烯烃、0.6mmol氢氧化钠、 0.6mmol过硫酸钾和0.06mmol硝酸银加入到15mL厚壁耐压反应管中,再加入3mL乙腈作溶剂。接着,于80℃下磁力搅拌12 小时。冷却至室温后,在反应液中加入两药匙柱层析硅胶(100-200 目),并通过减压蒸馏除去溶剂,再通过柱色谱分离得到产物纯品(以石油醚/乙酸乙酯=100:1作为洗脱剂)。该物质为白色固体,产率80%。表征数据:1H NMR(500MHz,CDCl3)δ9.71(d,J=8.6Hz,1H),7.92 (dd,J1=7.8,J2=1.3Hz,1H),7.75(q,J=8.8Hz,2H),7.71-7.65(m,1H),7.65-7.59(m,1H),7.57-7.53(m,2H),7.21-7.15(m,1H),4.15(s,3H).13C NMR(125MHz,CDCl3):δ158.90,134.69,132.79,130.40,128.68, 128.32,128.04,127.16,126.56,126.45,125.92,121.59,120.82,108.33, 55.75.
实施例12
将0.3mmol 2-(2-甲氧基)苯基硝基烯烃、0.6mmol三氟甲磺酸钠、0.6mmol过氧化叔丁醇和0.06mmol硝酸银加入到15mL 厚壁耐压反应管中,再加入3mL乙腈作溶剂。接着,于100℃下磁力搅拌6小时。冷却至室温后,在反应液中加入两药匙柱层析硅胶(1 00-200目),并通过减压蒸馏除去溶剂,再通过柱色谱分离得到产物纯品(以石油醚/乙酸乙酯=100:1作为洗脱剂)。该物质为白色固体,产率67%。
表征数据:1H NMR(500MHz,CDCl3)δ9.71(d,J=8.6Hz, 1H),7.92(dd,J1=7.8,J2=1.3Hz,1H),7.75(q,J=8.8Hz,2 H),7.71-7.65(m,1H),7.65-7.59(m,1H),7.57-7.53(m,2H),7.21-7. 15(m,1H),4.15(s,3H).13C NMR(125MHz,CDCl3):δ158.90, 134.69,132.79,130.40,128.68,128.32,128.04,127.16,126.56,12 6.45,125.92,121.59,120.82,108.33,55.75.
实施例13
将0.3mmol 2-噻吩基硝基烯烃、0.6mmol三氟甲磺酸钠、0.6 mmol过硫酸钾和0.06mmol硝酸银加入到15mL厚壁耐压反应管中,再加入3mL乙腈作溶剂。接着,于80℃下磁力搅拌4小时。冷却至室温后,在反应液中加入两药匙柱层析硅胶(100-200目),并通过减压蒸馏除去溶剂,再通过柱色谱分离得到产物纯品(以石油醚/乙酸乙酯=100:1作为洗脱剂)。该物质为白色固体,产率52%。
表征数据:1H NMR(500MHz,CDCl3):δ8.13(d,J=8.0H z,1H),7.91(d,J=8.0Hz,1H),7.81(d,J=8.6Hz,1H),7.71(d, J=8.6Hz,1H),7.59-7.53(m,1H),7.52-7.46(m,2H),7.44(d,J =5.3Hz,1H).13C NMR(125MHz,CDCl3):δ137.42,130.83,1 29.10,128.86,126.65,125.63,125.34,125.14,125.11,123.69,122. 08.
实施例14
将0.3mmol 2-噻吩基硝基烯烃、0.6mmol三氟甲磺酸钠、0.6 mmol过硫酸钾和0.06mmol氧化银加入到15mL厚壁耐压反应管中,再加入3mL乙腈作溶剂。接着,于60℃下磁力搅拌6小时。冷却至室温后,在反应液中加入两药匙柱层析硅胶(100-200目),并通过减压蒸馏除去溶剂,再通过柱色谱分离得到产物纯品(以石油醚/乙酸乙酯=100:1作为洗脱剂)。该物质为白色固体,产率44%。
表征数据:1H NMR(500MHz,CDCl3):δ8.13(d,J=8.0H z,1H),7.91(d,J=8.0Hz,1H),7.81(d,J=8.6Hz,1H),7.71(d, J=8.6Hz,1H),7.59-7.53(m,1H),7.52-7.46(m,2H),7.44(d,J =5.3Hz,1H).13C NMR(125MHz,CDCl3):δ137.42,130.83,1 29.10,128.86,126.65,125.63,125.34,125.14,125.11,123.69,122. 08.
实施例15
将0.3mmol 2-噻吩基硝基烯烃、0.6mmol叔丁醇钠、0.6mmol 过硫酸钾和0.06mmol硝酸银加入到15mL厚壁耐压反应管中,再加入3mL四氢呋喃作溶剂。接着,于80℃下磁力搅拌6小时。冷却至室温后,在反应液中加入两药匙柱层析硅胶(100-200目),并通过减压蒸馏除去溶剂,再通过柱色谱分离得到产物纯品(以石油醚/乙酸乙酯=100:1作为洗脱剂)。该物质为白色固体,产率26%。
表征数据:1H NMR(500MHz,CDCl3):δ8.13(d,J=8.0H z,1H),7.91(d,J=8.0Hz,1H),7.81(d,J=8.6Hz,1H),7.71(d, J=8.6Hz,1H),7.59-7.53(m,1H),7.52-7.46(m,2H),7.44(d,J =5.3Hz,1H).13C NMR(125MHz,CDCl3):δ137.42,130.83,1 29.10,128.86,126.65,125.63,125.34,125.14,125.11,123.69,122. 08.
实施例16
将0.3mmol 2-苯基硝基烯烃、0.3mmol三氟甲磺酸钠、0.6m mol过硫酸钾和0.06mmol硝酸银加入到15mL厚壁耐压反应管中,再加入3mL乙腈作溶剂。接着,于80℃下磁力搅拌6小时。冷却至室温后,在反应液中加入两药匙柱层析硅胶(100-200目),并通过减压蒸馏除去溶剂,再通过柱色谱分离得到产物纯品(以石油醚/乙酸乙酯=100:1作为洗脱剂)。该物质为白色固体,产率73%。表征数据:1H NMR(500MHz,CDCl3):δ8.69(d,J=8.0Hz,2H), 7.90-7.80(d,J=8.0Hz,2H),7.74(s,2H),7.67-7.63(t,J=16.0Hz,2H), 7.61-7.57(t,J=16.0Hz,2H).13C NMR(125MHz,CDCl3)δ132.08, 130.33,128.61,128.06,126.95,126.60,122.69.
实施例17
将0.3mmol 2-(2-甲氧基)苯基硝基烯烃、0.6mmol三氟甲磺酸钠、0.3mmol过硫酸钾和0.06mmol硝酸银加入到15mL厚壁耐压反应管中,再加入3mL乙腈作溶剂。接着,于80℃下磁力搅拌 6小时。冷却至室温后,在反应液中加入两药匙柱层析硅胶(100-20 0目),并通过减压蒸馏除去溶剂,再通过柱色谱分离得到产物纯品 (以石油醚/乙酸乙酯=100:1作为洗脱剂)。该物质为白色固体,产率 78%。
表征数据:1H NMR(500MHz,CDCl3)δ9.71(d,J=8.6Hz, 1H),7.92(dd,J1=7.8,J2=1.3Hz,1H),7.75(q,J=8.8Hz,2 H),7.71-7.65(m,1H),7.65-7.59(m,1H),7.57-7.53(m,2H),7.21-7. 15(m,1H),4.15(s,3H).13C NMR(125MHz,CDCl3):δ158.90, 134.69,132.79,130.40,128.68,128.32,128.04,127.16,126.56,12 6.45,125.92,121.59,120.82,108.33,55.75.。
Claims (8)
2.如权利要求1所述的方法,其特征在于:所述银催化剂的物质的量为所述起始物物质的量的10%~30%。
3.如权利要求1所述的方法,其特征在于:所述氧化剂的物质的量为所述起始物物质的量的100%~300%。
4.如权利要求1所述的方法,其特征在于:所述碱性物质为三氟甲磺酸钠、碳酸钠、氢氧化钠、叔丁醇钠的一种。
5.如权利要求1所述的方法,其特征在于:所述碱性物质的物质的量为所述起始物物质的量的100%-300%。
6.如权利要求1所述的方法,其特征在于:所述溶剂为乙腈、四氢呋喃、二氯甲烷中的一种或多种。
7.如权利要求1所述的方法,其特征在于:所述溶剂的体积以所述起始物的物质的量计为1~2mL/mmol。
8.如权利要求1所述的方法,其特征在于所述分离纯化为:反应液中加入柱层析硅胶,并通过减压蒸馏除去溶剂,再通过柱色谱分离,以石油醚与乙酸乙酯体积比为100:1的混合液作为洗脱剂洗脱,收集含目标产物的洗脱液,蒸除溶剂得到目标产物。
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