CN111253208A - 一种1-碘代炔烃的制备方法 - Google Patents
一种1-碘代炔烃的制备方法 Download PDFInfo
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- CSRZQMIRAZTJOY-UHFFFAOYSA-N trimethylsilyl iodide Chemical compound C[Si](C)(C)I CSRZQMIRAZTJOY-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/10—Preparation of halogenated hydrocarbons by replacement by halogens of hydrogen atoms
- C07C17/14—Preparation of halogenated hydrocarbons by replacement by halogens of hydrogen atoms in the side-chain of aromatic compounds
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
- C07C253/30—Preparation of carboxylic acid nitriles by reactions not involving the formation of cyano groups
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/01—Preparation of ethers
- C07C41/18—Preparation of ethers by reactions not forming ether-oxygen bonds
- C07C41/22—Preparation of ethers by reactions not forming ether-oxygen bonds by introduction of halogens; by substitution of halogen atoms by other halogen atoms
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- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/24—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D213/26—Radicals substituted by halogen atoms or nitro radicals
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- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
- C07D333/06—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to the ring carbon atoms
- C07D333/12—Radicals substituted by halogen atoms or nitro or nitroso radicals
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Abstract
本发明公开了一种1‑碘代炔烃的制备方法,包括以下步骤:在三氧化二铝和分子筛的存在下,将端基炔类化合物与N‑碘代丁二酰亚胺于溶剂中反应,制得1‑碘代炔烃化合物,反应式如下:
Description
技术领域
本发明涉及有机合成领域,特别涉及一种1-碘代炔烃的制备方法。
背景技术
碘代化合物合成广泛存在与时间有机合成技术中间体、活性天然产物、药物、农药以及材料分子中。由于1-碘代炔烃的独特化学结构(碳碳三键和碳碘键),1-碘代炔烃既可以作为亲核试剂也可以作为亲电试剂,是一类重要的有机合成子,被广泛用于偶联反应和杂环合成反应。对于1-碘代炔烃的合成方法,最为普遍的策略是对末端炔烃的直接卤代。关于1-碘代炔烃的合成报道主要有:强碱/碘单质、高价碘鎓盐/碘代丁二酰亚胺体系、金属试剂、离子液体、电极氧化法、碘化钾或三甲基碘硅烷/醋酸碘苯体系。然而这些方法存在的一些缺点比如运用昂贵的金属催化剂、苛刻的反应条件、反应不易操作、对环境污染较大、需要使用氧化剂等,不能用于炔基碘类化合物的常规制备。
发明内容
针对现有技术的不足,本发明的目的是在于提供了一种1-碘代炔烃的制备方法。使用廉价易得的N-碘代丁二酰亚胺和三氧化二铝来实现端炔的碘代,合成1-碘代炔烃。该方法具有试剂环保、操作简单、后处理简单、条件温和、底物适用范围广、有工业应用前景等优点。
为了实现上述的目的,本发明采用以下技术措施:
以端炔化合物为原料,以N-碘代丁二酰亚胺作为卤化试剂,三氧化二铝作为催化剂,分子筛作为干燥剂,在溶剂中反应,合成一系列1-碘代炔烃,反应式如下:
式中,所述端炔化合物选自R为链状烷烃基团、环状烷烃基团、烯烃基团、酯基、取代苯基和杂环芳烃基团中任意一种;
所述分子筛为3A、4A或者5A分子筛中的一种,形状为粉末;
所述溶剂时选自乙腈、N,N-二甲基甲酰胺(DMF)、二甲基亚砜(DMSO)中的一种或几种。
一种1-碘代炔烃的制备方法,其步骤是:
将端基炔类化合物、三氧化二铝、分子筛和N-碘代丁二酰亚胺于溶剂中混匀,在25-80℃条件下反应至薄层析硅胶板显示反应底物消失,加入饱和硫代硫酸钠溶液淬灭反应,乙酸乙酯萃取,减压除去溶剂,柱层析得到1-碘代炔烃类化合物。
所述制备步骤中,端基炔类化合物与N-碘代丁二酰亚胺的摩尔比为1:1-1.3。
端基炔类化合物与三氧化二铝的摩尔比为1:0.5-2.0;端基炔类化合物与分子筛的重量比为1:0.3-0.5。反应环境不需要隔绝空气。反应温度为25-80℃,温度越高反应时间越短,反应收率也越高,80℃下反应只需要1h;25℃下反应则需要至少5h。
本发明的有益效果体现在:一种1-碘代炔烃的制备方法,以端炔为原料,以N-碘代丁二酰亚胺为卤代试剂,以三氧化二铝作为催化剂。与已有技术相比,本发明方法具有目标产物的收率较高,催化剂三氧化二铝廉价易得,底物范围广,且试剂便宜易得,无需惰性气体保护,后处理简单等优点,适于进行常规制备。同时本方法对于为液体的端基炔烃可以采用无溶剂条件制备1-碘代端基炔烃,对于固态的端基炔烃只需要使用少量的溶剂溶解原料端基炔烃即可。
具体实施方式
下面对本发明的实施例作详细说明:本实施例在以本发明技术方案为前提下进行实施,给出了详细地实施方式和过程,但本发明的保护范围不限于下述的实施例。下面结合实施例对本发明作进一步说明:
实施例1:1-(碘乙炔基)苯的合成
将1-乙炔基苯(2.0 mmol, 204.2 mg)、乙腈(10 mL)、三氧化二铝(2.6 mmol, 265.0mg)、4A分子筛(200 mg)和N-碘代丁二酰亚胺(2.2mmol, 495.0 mg)依次加入到25 mL反应瓶中,然后升温至80℃反应1h,反应结束后,萃取,过滤,减压除去有机溶剂,使用石油醚作为洗脱剂,硅胶柱层析分离,得到446.9 mg无色油状物,收率为98%。1H NMR (CDCl3, 400MHz): δ (ppm) 7.47-7.44 (m, 2H), 7.34-7.32 (m, 3H); 13C NMR(CDCl3, 101 MHz): δ(ppm) 132.43, 128.91, 128.35, 123.47, 94.26, 6.44。
实施例2:3-(碘乙炔基)噻吩的合成
将3-乙炔基噻吩(2.0 mmol, 216.2 mg)、乙腈(10 mL)、三氧化二铝(2.6mmol, 265.0mg)、4A分子筛(200 mg)和N-碘代丁二酰亚胺(2.2 mmol, 495.0 mg)依次加入到25 mL反应瓶中,然后升温至80℃反应1.5 h,反应结束后,萃取,过滤,减压除去有机溶剂,使用石油醚作为洗脱剂,硅胶柱层析分离,得到426 .5 mg浅黄色油状物,收率为91%。1H NMR (CDCl3,400 MHz): δ (ppm) 7.48 (dd, J = 2.8, 1.2 Hz, 1H), 7.26 (dd, J = 5.0, 2.8 Hz,1H), 7.11 (dd, J = 5.0, 1.2 Hz, 1H); 13C NMR(CDCl3, 101 MHz): δ (ppm) 130.44,130.11, 125.30, 122.60, 89.29, 6.05。
实施例3:(4-碘-3-丁炔-1-基)苯的合成
将3-丁炔-1-基苯(2.0 mmol, 260.4 mg)、乙腈(10 mL)、三氧化二铝(2.6 mmol,265.0 mg)、4A分子筛(200 mg)和N-碘代丁二酰亚胺(2.2 mmol, 495.0 mg)依次加入到25mL反应瓶中,然后升温至80℃反应1h,反应结束后,萃取,过滤,减压除去有机溶剂,使用石油醚作为洗脱剂,硅胶柱层析分离,得到450.7 mg无色油状物,收率为88%。1H NMR (CDCl3,400 MHz): δ (ppm) 7.31-7.27 (m, 2H), 7.23-7.18 (m, 3H), 2.83 (t, J = 7.6 Hz,2H), 2.63 (t, J = 7.4 Hz, 2H); 13C NMR(CDCl3, 101 MHz): δ (ppm) 140.31,128.53, 128.49, 126.49, 93.98, 35.00, 23.12, -5.72。
实施例4:1-(碘乙炔基)-4-甲氧基苯的合成
将4-乙炔基苯甲醚(2.0 mmol, 264.3 mg)、乙腈(10 mL)、三氧化二铝(2.6 mmol,265.0 mg)、4A分子筛(200 mg)和N-碘代丁二酰亚胺(2.2 mmol, 495.0 mg)依次加入到25mL反应瓶中,然后升温至80℃反应1h,反应结束后,萃取,过滤,减压除去有机溶剂,使用石油醚作为洗脱剂,硅胶柱层析分离,得到474.8 mg浅黄色固体,收率为92%。1H NMR (CDCl3,400 MHz): δ (ppm) 7.37 (d, J = 8.8 Hz, 2H), 6.83 (d, J = 8.8 Hz, 2H), 3.81(s, 3H); 13C NMR(CDCl3, 101 MHz): δ (ppm) 160.02, 133.87, 115.62, 113.93,94.08, 55.40, 4.11。
实施例5:3-(碘乙炔基)吡啶的合成
将3-乙炔基吡啶(2.0 mmol, 206.2 mg)、乙腈(10 mL)、三氧化二铝(2.6 mmol, 265.0mg)、4A分子筛(200 mg)和N-碘代丁二酰亚胺(2.2 mmol, 495.0 mg)依次加入到25 mL反应瓶中,然后升温至80℃反应1h,反应结束后,萃取,过滤,减压除去有机溶剂,使用石油醚作为洗脱剂,硅胶柱层析分离,得到425.9 mg浅黄色固体,收率为93%。1H NMR (CDCl3, 400MHz): δ (ppm) 8.67 (dd, J = 2.0, 1.2 Hz, 1H), 8.53 (dd, J = 4.8, 1.6 Hz, 1H),7.71 (dt, J = 8.0, 2.0 Hz, 1H), 7.27-7.23 (m, 1H); 13C NMR(CDCl3, 101 MHz): δ(ppm) 153.06, 148.96, 139.35, 123.05, 120.72, 90.76, 11.93。
实施例6:4-(碘乙炔基)-1-三氟甲基苯的合成
将4-(乙炔基)-1-三氟甲基苯(2.0 mmol, 340.3 mg)、乙腈(10 mL)、三氧化二铝(2.6mmol, 265.0 mg)、4A分子筛(200 mg)和N-碘代丁二酰亚胺(2.2 mmol, 495.0 mg)依次加入到25 mL反应瓶中,然后升温至80℃反应1 h,反应结束后,萃取,过滤,减压除去有机溶剂,使用石油醚作为洗脱剂,硅胶柱层析分离,得到556.5 mg白色固体,收率为94%。1H NMR(CDCl3, 400 MHz): δ (ppm) 7.59-7.52 (m, 4H); 13C NMR(CDCl3, 101 MHz): δ (ppm)132.75, 130.62 (q, J = 32.8 Hz), 127.18, 125.34 (q, J = 3.8 Hz), 123.94 (q, J= 273.3 Hz.), 92.96, 10.31。
实施例7:4-(碘乙炔基)-1-氰基苯的合成
将4-(乙炔基)-1-氰基-苯(2.0 mmol, 254.3 mg)、乙腈(10 mL)、三氧化二铝(2.6mmol, 265.0 mg)、4A分子筛(200 mg)和N-碘代丁二酰亚胺(2.2 mmol, 495.0 mg)依次加入到25 mL反应瓶中,然后升温至80℃反应1 h,反应结束后,萃取,过滤,减压除去有机溶剂,使用石油醚作为洗脱剂,硅胶柱层析分离,得到495.4 mg白色固体,收率为98%。1H NMR(CDCl3, 400 MHz): δ (ppm) 7.60 (d, J = 8.8 Hz, 2H), 7.50 (d, J = 8.8 Hz, 2H);13C NMR(CDCl3, 101 MHz): δ (ppm) 132.99, 132.07, 128.18, 118.38, 112.24,92.67, 13.20。
实施例8:1-(碘乙炔基)苯的合成
将1-乙炔基苯(2.0 mmol, 204.2 mg)、乙腈(10mL)、三氧化二铝(2.6 mmol, 265.0mg)、4A分子筛(200 mg)和N-碘代丁二酰亚胺(2.0 mmol, 450.0 mg)依次加入到25 mL反应瓶中,然后升温至80℃反应1 h,反应结束后,萃取,过滤,减压除去有机溶剂,使用石油醚作为洗脱剂,硅胶柱层析分离,1-(碘乙炔基)苯的收率为81%。
实施例9:1-(碘乙炔基)苯的合成
将1-乙炔基苯(2.0 mmol, 204.2 mg)、乙腈(10 mL)、三氧化二铝(2.6 mmol, 265.0mg)、4A分子筛(200 mg)和N-碘代丁二酰亚胺(2.2mmol, 495.0 mg)依次加入到25 mL反应瓶中,然后升温至25℃反应6h,反应结束后,萃取,过滤,减压除去有机溶剂,使用石油醚作为洗脱剂,硅胶柱层析分离,1-(碘乙炔基)苯的收率为42%。
实施例10:1-(碘乙炔基)苯的合成
将1-乙炔基苯(10.0 mmol, 1.021 g)、乙腈(50 mL)、三氧化二铝(13 mmol, 1.325g)、4A分子筛(1.0 g)和N-碘代丁二酰亚胺(11 mmol, 2.475 g)依次加入到100 mL反应瓶中,然后升温至80℃反应1h,反应结束后,萃取,过滤,减压除去有机溶剂,使用石油醚作为洗脱剂,硅胶柱层析分离,得到1-(碘乙炔基)苯2.1891g,收率为96%。
实施例11:1-(碘乙炔基)苯的合成
将1-乙炔基苯(10.0 mmol, 1.021 g)、乙腈(3 mL)、三氧化二铝(13 mmol, 1.325 g)和N-碘代丁二酰亚胺(11 mmol, 2.475 g)依次加入到10 mL反应瓶中,然后升温至80℃反应1h,反应结束后,过滤,减压除去有机溶剂,使用石油醚作为洗脱剂,硅胶柱层析分离,1-(碘乙炔基)苯的收率为98%。
Claims (7)
2.根据权利要求1所述的一种1-碘代炔烃的制备方法,其特征在于,将端基炔类化合物、三氧化二铝、分子筛和N-碘代丁二酰亚胺于溶剂中混匀,在温度25-80℃条件下反应至薄层析硅胶板显示反应底物消失,加入饱和硫代硫酸钠溶液淬灭反应,乙酸乙酯萃取,减压除去溶剂,柱层析得到所述1-碘代炔烃类。
3.根据权利要求1所述的一种1-碘代炔烃的制备方法,其特征在于,所述端基炔类化合物与N-碘代丁二酰亚胺的摩尔比为1:1-1.3。
4.根据权利要求1所述的一种1-碘代炔烃的制备方法,其特征在于,所述端基炔类化合物与三氧化二铝的摩尔比为1:0.5-1.5。
5.根据权利要求1所述的一种1-碘代炔烃的制备方法,其特征在于,所述端基炔类化合物与分子筛的重量比为1:0.3-0.5。
6.根据权利要求1所述的一种1-碘代炔烃的制备方法,其特征在于,所述端基炔类化合物与N-碘代丁二酰亚胺在反应过程中不需要隔绝空气。
7.根据权利要求1所述的一种1-碘代炔烃的制备方法,其特征在于,所述端基炔类化合物与N-碘代丁二酰亚胺在反应过程中反应温度为25-80℃,反应时间为1-5h。
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CN112209804A (zh) * | 2020-05-07 | 2021-01-12 | 广东石油化工学院 | 1-碘代炔化合物的合成方法 |
CN112209804B (zh) * | 2020-05-07 | 2022-09-20 | 广东石油化工学院 | 1-碘代炔化合物的合成方法 |
CN112778076A (zh) * | 2020-12-29 | 2021-05-11 | 华北电力大学 | 一种室温下非均相Ag催化剂催化制备1-卤代炔烃的方法 |
CN112778076B (zh) * | 2020-12-29 | 2022-05-24 | 华北电力大学 | 一种室温下非均相Ag催化剂催化制备1-卤代炔烃的方法 |
CN114085122A (zh) * | 2021-11-30 | 2022-02-25 | 河南工业大学 | 一种合成1-碘代炔烃类化合物的方法 |
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