CN106083665A - 一种采用芳基磺酰基苯甲醛腙对环丙烷化合物开环的方法 - Google Patents
一种采用芳基磺酰基苯甲醛腙对环丙烷化合物开环的方法 Download PDFInfo
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- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzenecarboxaldehyde Natural products O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 125000004391 aryl sulfonyl group Chemical group 0.000 title claims abstract description 42
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 title claims abstract description 41
- -1 cyclopropane compound Chemical class 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000006243 chemical reaction Methods 0.000 claims abstract description 55
- 238000007142 ring opening reaction Methods 0.000 claims abstract description 28
- LVZWSLJZHVFIQJ-UHFFFAOYSA-N Cyclopropane Chemical compound C1CC1 LVZWSLJZHVFIQJ-UHFFFAOYSA-N 0.000 claims abstract description 27
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 21
- 239000011968 lewis acid catalyst Substances 0.000 claims abstract description 14
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002253 acid Substances 0.000 claims abstract description 10
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- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 claims description 2
- NAPHXISIYHAKAH-UHFFFAOYSA-N lanthanum;trifluoromethanesulfonic acid Chemical compound [La].OS(=O)(=O)C(F)(F)F NAPHXISIYHAKAH-UHFFFAOYSA-N 0.000 claims description 2
- PDXOPNHXAAQJJO-UHFFFAOYSA-N nickel;trifluoromethanesulfonic acid Chemical compound [Ni].OS(=O)(=O)C(F)(F)F PDXOPNHXAAQJJO-UHFFFAOYSA-N 0.000 claims description 2
- QUJLPICXDXFRSN-UHFFFAOYSA-N scandium;trifluoromethanesulfonic acid Chemical compound [Sc].OS(=O)(=O)C(F)(F)F QUJLPICXDXFRSN-UHFFFAOYSA-N 0.000 claims description 2
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 7
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- 230000015572 biosynthetic process Effects 0.000 description 5
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- 125000001424 substituent group Chemical group 0.000 description 4
- 0 CCOC(C(CC(c1ccccc1)S(c1ccc(*)cc1)(=O)=O)C(OCC)=O)=O Chemical compound CCOC(C(CC(c1ccccc1)S(c1ccc(*)cc1)(=O)=O)C(OCC)=O)=O 0.000 description 3
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- CWKMIEALBOKDCD-UHFFFAOYSA-N 2-(benzenesulfonyl)benzaldehyde Chemical compound O=CC1=CC=CC=C1S(=O)(=O)C1=CC=CC=C1 CWKMIEALBOKDCD-UHFFFAOYSA-N 0.000 description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 2
- ZLQXWORWTXPPFX-UHFFFAOYSA-N [N+](=O)([O-])C1=CC(=C(C=O)C=C1)S(=O)(=O)C1=CC=CC=C1 Chemical compound [N+](=O)([O-])C1=CC(=C(C=O)C=C1)S(=O)(=O)C1=CC=CC=C1 ZLQXWORWTXPPFX-UHFFFAOYSA-N 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
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- 230000008901 benefit Effects 0.000 description 2
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- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Substances ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 229930014626 natural product Natural products 0.000 description 2
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 2
- 239000007848 Bronsted acid Substances 0.000 description 1
- HLANHXNIQMEMED-UHFFFAOYSA-N CCc1cccc(C(CC(O)O)C=[O]=C)c1 Chemical compound CCc1cccc(C(CC(O)O)C=[O]=C)c1 HLANHXNIQMEMED-UHFFFAOYSA-N 0.000 description 1
- KMTDMTZBNYGUNX-UHFFFAOYSA-N Cc1ccc(CO)cc1 Chemical compound Cc1ccc(CO)cc1 KMTDMTZBNYGUNX-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910021592 Copper(II) chloride Inorganic materials 0.000 description 1
- 241001597008 Nomeidae Species 0.000 description 1
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- 239000005864 Sulphur Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- OBHWOLDGXCOBAK-UHFFFAOYSA-N [F].CS(O)(=O)=O Chemical compound [F].CS(O)(=O)=O OBHWOLDGXCOBAK-UHFFFAOYSA-N 0.000 description 1
- YLEIFZAVNWDOBM-ZTNXSLBXSA-N ac1l9hc7 Chemical compound C([C@H]12)C[C@@H](C([C@@H](O)CC3)(C)C)[C@@]43C[C@@]14CC[C@@]1(C)[C@@]2(C)C[C@@H]2O[C@]3(O)[C@H](O)C(C)(C)O[C@@H]3[C@@H](C)[C@H]12 YLEIFZAVNWDOBM-ZTNXSLBXSA-N 0.000 description 1
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 1
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- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
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- YVECGMZCTULTIS-PBXRRBTRSA-N glucal Chemical group OC[C@H]1OC=C[C@@H](O)[C@@H]1O YVECGMZCTULTIS-PBXRRBTRSA-N 0.000 description 1
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- IDBOAVAEGRJRIZ-UHFFFAOYSA-N methylidenehydrazine Chemical compound NN=C IDBOAVAEGRJRIZ-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C315/00—Preparation of sulfones; Preparation of sulfoxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
- B01J31/28—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of the platinum group metals, iron group metals or copper
- B01J31/30—Halides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2231/00—Catalytic reactions performed with catalysts classified in B01J31/00
- B01J2231/40—Substitution reactions at carbon centres, e.g. C-C or C-X, i.e. carbon-hetero atom, cross-coupling, C-H activation or ring-opening reactions
- B01J2231/48—Ring-opening reactions
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- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
本发明公开了一种采用芳基磺酰基苯甲醛腙对环丙烷化合物发生开环反应的方法,是以1,1‑双酯‑2‑芳基环丙烷化合物为起始原料,使用芳基磺酰基苯甲醛腙做亲核试剂;在三氟甲磺酸金属类和卤代金属类双路易斯酸催化剂作用下,于苯类溶剂中发生环丙烷与腙的开环反应,反应温度为25~50℃,得到芳香脂肪多官能团化砜类产物。本发明反应过程操作简单,而且合成方法具有广泛的普适性,对于不同结构的双酯环丙烷和芳基磺酰基苯甲醛腙均可获得较高的收率。
Description
技术领域
本发明涉及一种采用芳基磺酰基苯甲醛腙对环丙烷化合物开环的方法,属于有机合成技术领域。
背景技术
环张力的有效利用对复杂分子的构建具有相当大的优势,其中环丙烷作为重要的有机合成砌块在合成中的应用非常广泛。近年来,环丙烷作为合成天然产物以及药物的重要原料已成为科学家们所争相研究的对象,它虽然具有较大的环张力,但是在一般情况下仍然很难造成C-C键的断裂,在各种具有不同取代基的环丙烷中,吸供电基团同时存在的环丙烷化合物因为能利用推-拉效应从而诱发形成高极化的C-C键,降低活化屏障,进而提高三元环的反应活性,而被众多化学家们所青睐。
在吸供电环丙烷的基本反应中,环丙烷的开环反应很是普遍,从而不难想象出1,3-双官能团衍生物通过开环反应是较易得到的。开环反应通常在路易斯酸催化下进行,含有杂原子的亲核试剂或富电子芳烃捕获环丙烷的正电荷,而负电荷旁边的受体取代基通常由质子中和,所得的产物已经在合成生物活性分子中得到广泛应用。然而在众多与环丙烷反应的开环试剂中,使用硫元素对环丙烷的开还反应报道甚少,至今并无磺酰基的硫原子对环丙烷开环反应从而制备砜类化合物的文献阐述。在硫开环反应的报道中,Pagenkopf等人于2003年(Yu,M.,Pagenkopf,B.L.Acetal formation by solvolysis ofglucal-derived donor-acceptor cyclopropanes[J].Tetrahedron,2003,59(16):2765–2771.)报道了硫原子的开环反应,此反应运用TiCl4和质子酸TfOH双路易斯酸催化特定的天然产物己烯糖的D-A环丙烷衍生物发生氧开环或硫开环反应,反应式如下:
此方法虽然实现了硫原子和氧原子对环丙烷的杂原子开环反应,然而该反应也仅仅是针对芳香硫醇的硫开还反应。
综上所述,虽然环丙烷化合物在路易斯酸催化下发生开环反应的研究取得了一定进展,然而关于芳基磺酰基保护的苯甲醛腙作为亲核试剂与环丙烷的开环反应却鲜有报道。因此,寻找简单经济、温和的反应条件来完成芳基磺酰基苯甲醛腙与环丙烷化合物的合成反应,以使反应能达到更易于操作、更经济高效、更温和、产物收率更高的目标是绝对值得人们去进一步探究的。
发明内容
本发明旨在提供一种采用芳基磺酰基苯甲醛腙对环丙烷化合物开环的方法,该方法易于操作、反应经济高效、温和、产物收率高。
本发明提供了一种芳基磺酰基苯甲醛腙对环丙烷化合物发生开环反应的方法,是以1,1-双酯-2-芳基环丙烷化合物作起始原料,使用芳基磺酰基苯甲醛腙做亲核试剂;在三氟甲磺酸金属类和卤代金属类双路易斯酸催化剂作用下,于苯类溶剂中发生环丙烷与腙的开环反应,得到芳香脂肪多官能团化砜类产物。
上述方法中,所述的1,1-双酯-2-芳基环丙烷化合物具有以下结构通式:
式中,X代表H、甲基、甲氧基、硝基或卤素中的一种。
上述方法中,所述的芳基磺酰基苯甲醛腙化合物具有以下结构通式:
式中,Z代表H、甲基、甲氧基、卤素、硝基中的一种。
本发明提供的芳基磺酰基苯甲醛腙与环丙烷化合物发生的开环反应,所述的原始底物芳基磺酰基苯甲醛腙与1,1-双酯-2-芳基环丙烷化合物的反应式如下所示:
上述方法中,所述三氟甲磺酸金属类路易斯酸包括三氟甲磺酸铟、三氟甲磺酸镧、三氟甲磺酸铁、三氟甲磺酸钪或三氟甲磺酸镍中的一种。所述卤代金属类路易斯酸包括氯化锡、氯化锌、氯化铁、氯化镓或氯化铜中的一种。
上述方法中,所述的路易斯酸催化剂的用量分别为:三氟甲磺酸金属类路易斯酸催化剂用量为0~15mol%/mmol芳基磺酰基苯甲醛腙化合物;卤代金属类路易斯酸催化剂用量为0~30mol%/mmol苯磺酰腙化合物。优选地,三氟甲磺酸金属类路易斯酸催化剂用量为1~10mol%/mmol苯磺酰腙化合物;卤代金属类路易斯酸催化剂用量为5~25mol%/mmol苯磺酰腙化合物。
上述方法中,反应是在苯类溶剂体系中进行的,苯类溶剂的用量为2.5~10mL/mmol苯磺酰腙化合物.
上述方法中,所述苯磺酰腙与环丙烷化合物的摩尔比为1:1~1:4,优选的摩尔比为1:2~1:3.5。
上述方法中,本发明的合成反应是在25~50℃下进行的,优选的反应温度为25~40℃。
本发明中,基于上述反应条件的优化,考察苯类溶剂中残留水分对反应的影响时,选用添加剂的用量作为考察对象,在合成反应过程中的用量为0~50mg/mmol芳基磺酰基苯甲醛腙化合物;优选的的用量为20~40mg/mmol芳基磺酰基苯甲醛腙化合物。实验结果说明微量的水分将会使反应收率有所降低,所以在反应过程中使用
本发明是以起始原料芳基磺酰基苯甲醛腙作为亲核试剂,双边取代的环丙烷化合物作为亲电基团,该环丙烷上的取代基能够降低环丙烷的开环屏障,从而达到活化环丙烷的效果,使得反应更易发生。腙的磺酰基能很好地作为亲核试剂对环丙烷进行开环,形成多种碳硫键的砜类产物。
本发明的有益效果:
本发明提供了一种以芳基磺酰基苯甲醛腙为亲核试剂,在三氟甲磺酸金属类和卤代金属类双催化剂条件下于苯类溶剂体系中,采用芳基磺酰基苯甲醛腙对双酯环丙烷化合物进行开环的方法,该方法具有以下优点:
1)操作简单,反应条件温和;
2)该反应使用双金属催化剂不仅能较好地实现反应的转化,而且还能降低单独使用较昂贵三氟甲磺酸金属类催化剂的用量,反应成本大大降低;
3)本发明开环方法具有广泛的普适性,对不同结构的双酯环丙烷和芳基磺酰基苯甲醛腙反应均可以获得较高的收率;
4)反应所得砜类产物具有较高的应用价值,因此,作为一种新的双酯环丙烷化合物与芳基磺酰基苯甲醛腙合成芳基脂肪砜的方法,本发明具有很强的实际应用价值。
具体实施方式
本发明通过以下实施例进行进一步的说明,但不能将以下实施例理解为是对本发明保护范围的限制。在不脱离本发明所述的技术范围内,任何对于本发明非本质的改进和变化,都应该包含在本发明的技术范围内。
下面给出了不同取代基的芳基双酯环丙烷化合物与芳基磺酰基保护的苯甲醛腙所进行的合成反应实施例。
实施例1:
在反应试管中加入对甲基苯磺酰基苯甲醛腙1a 0.1mmol,结构式如2a所示的环丙烷0.35mmol,1.5mg Sc(OTf)3,1.4mg ZnCl2,20mg甲苯0.5mL,加热至30℃下搅拌反应16h,经萃取、洗涤和干燥得粗产品。粗产品经硅胶层析柱纯化得到单一构型的开环产物,结构式如表1中3a所示,采用核磁共振和高分辨质谱对产物进行表征证实了产物的结构。
表1对甲苯磺酰腙1a与环丙烷2a的反应
3a The product was obtained(petroleum ether/ethyl acetate=10:1(v/v))as a colorless liquid;1H NMR(400MHz,CDCl3):δ7.44(d,J=8.3Hz,2H),7.33-7.23(m,3H),7.20(d,J=8.0Hz,2H),7.13-7.10(m,2H),4.26(dd,J=4.5,11.1Hz,1H),4.18-4.04(m,4H),3.27(dd,J=5.4,9.8Hz,1H),2.98-2.90(m,1H),2.70-2.62(m,1H),2.39(s,3H),1.22(td,J=1.5,7.1Hz,6H)ppm;13C NMR(100MHz,CDCl3):δ168.5,168.2,144.7,134.1,131.2,130.0,129.4,129.1,129.1,128.7,68.7,61.7,61.6,49.1,27.2,21.6,14.0,13.9ppm;HRMS(ESI):Calcd for C22H26O6S+Na 441.1347,found 441.1348。
实施例2:
在反应试管中加入对甲基苯磺酰基苯甲醛腙1a 0.1mmol,结构式如2b所示的环丙烷0.30mmol,1.1mg In(OTf)3,3.1mg SnCl4,20mg甲苯0.7mL,加热至30℃下搅拌反应10h,经萃取、洗涤和干燥得粗产品。粗产品经硅胶层析柱纯化得到单一构型的开环产物,结构式如表2中3b所示,采用核磁共振和高分辨质谱对产物进行表征证实了产物的结构。
表2对甲苯磺酰腙1a与环丙烷2b的反应
3b The product was obtained(petroleum ether/ethyl acetate=10:1(v/v))as a colorless liquid;1H NMR(600MHz,CDCl3):δ7.45(d,J=8.2Hz,2H),7.42(dd,J=1.7,7.6Hz,2H),7.24(td,J=1.3,7.2Hz,1H),7.20(t,J=8.1Hz,3H),7.05-7.02(m,1H),6.90(d,J=7.2Hz,1H),4.67(dd,J=4.4,11.0Hz,1H),4.18-4.12(m,1H),4.12-4.04(m,3H),3.24(q,J=5.3Hz,1H),2.97-2.91(m,1H),2.70-2.64(m,1H),2.40(s,3H),1.93(s,3H),1.21(td,J=2.3,7.1Hz,6H)ppm;13C NMR(150MHz,CDCl3):δ171.4,171.3,147.6,141.8,137.5,133.5,132.5,132.2,132.0,131.8,131.1,129.4,66.0,64.6,64.5,52.0,30.7,29.8,24.5,24.5,16.9,16.8ppm;HRMS(ESI):Calcd for C23H28O6S+H 433.1679,found433.1680。
实施例3:
在反应试管中加入对甲基苯磺酰基苯甲醛腙1a 0.2mmol,结构式如2c所示的环丙烷0.35mmol,5.0mg Sc(OTf)3,5.2mg GaCl3,20mg甲苯1.0mL,加热至40℃下搅拌反应14h,经萃取、洗涤和干燥得粗产品。粗产品经硅胶层析柱纯化得到单一构型的开环产物,结构式如表3中3c所示,采用核磁共振和高分辨质谱对产物进行表征证实了产物的结构。
表3对甲苯磺酰腙1a与环丙烷2c的反应
3c The product was obtained(petroleum ether/ethyl acetate=10:1(v/v))as a colorless liquid;1H NMR(600MHz,CDCl3):δ7.46(d,J=8.3Hz,2H),7.21(d,J=8.0Hz,2H),7.15-7.10(m,2H),6.93(s,1H),6.90(d,J=7.2Hz,1H),4.21(dd,J=4.4,11.2Hz,1H),4.17-4.10(m,4H),3.26(q,J=7.2Hz,1H),2.91-2.86(m,1H),2.66-2.61(m,1H),2.40(s,3H),2.27(s,3H),1.20(t,J=7.1Hz,6H)ppm;13C NMR(150MHz,CDCl3):δ171.4,171.1,147.5,141.2,137.1,133.9,133.5,132.8,132.2,132.0,131.4,129.9,71.6,64.6,64.5,52.0,30.2,29.8,24.5,24.2,16.9,16.8ppm;HRMS(ESI):Calcd for C23H28O6S+H433.1679,found 433.1685。
实施例4:
在反应试管中加入对甲基苯磺酰基苯甲醛腙1a 0.3mmol,结构式如2d所示的环丙烷0.45mmol,5.3mg Ni(OTf)2,4.8mg FeCl3,20mg氯苯1.2mL,加热至40℃下搅拌反应10h,经萃取、洗涤和干燥得粗产品。粗产品经硅胶层析柱纯化得到单一构型的开环产物,结构式如表4中3d所示,采用核磁共振和高分辨质谱对产物进行表征证实了产物的结构。
表4对甲苯磺酰腙1a与环丙烷2d的反应
3d The product was obtained(petroleum ether/ethyl acetate=10:1(v/v))as a colorless liquid;1H NMR(600MHz,CDCl3):δ7.47(d,J=8.2Hz,2H),7.21(d,J=8.0Hz,2H),7.08(d,J=7.9Hz,2H),7.01(d,J=7.9Hz,2H),4.22(dd,J=4.4,11.3Hz,1H),4.16-4.05(m,4H),3.23(dd,J=5.1,10.1Hz,1H),2.91-2.85(m,1H),2.65-2.49(m,1H),2.40(s,3H),2.32(s,3H),1.20(t,J=7.1Hz,6H)ppm;13C NMR(150MHz,CDCl3):δ171.4,171.1,147.4,142.0,137.2,132.7,132.3,132.0,1301.9,131.1,71.3,64.6,64.4,30.2,29.8,24.5,24.1,16.9,16.8ppm;HRMS(ESI):Calcd for C23H28O6S+H 433.1679,found433.1691。
实施例5:
在反应试管中加入对甲基苯磺酰基苯甲醛腙1a 0.2mmol,结构式如2e所示的环丙烷0.35mmol,5.8mg La(OTf)3,6.8mg CuCl2,30mg甲苯0.8mL,加热至60℃下搅拌反应24h,经萃取、洗涤和干燥得粗产品。粗产品经硅胶层析柱纯化得到单一构型的开环产物,结构式如表5中3e所示,采用核磁共振和高分辨质谱对产物进行表征证实了产物的结构。
表5对甲苯磺酰腙1a与环丙烷2e的反应
3e The product was obtained(petroleum ether/ethyl acetate=10:1(v/v))as a colorless liquid;1H NMR(400MHz,CDCl3):δ7.66(dd,J=1.4,7.9Hz,1H),7.49(d,J=1.0,8.2Hz,2H),7.36(td,J=1.5,7.3Hz,1H),7.28(td,J=1.2,8.0Hz,1H),7.23(d,J=1.6Hz,1H),7.21(d,J=8.4Hz,2H),5.04(dd,J=4.4,11.1Hz,1H),4.23-4.01(m,4H),3.22(dd,J=5.4,9.8Hz,1H),3.06-2.98(m,1H),2.71-2.63(m,1H),2.40(s,3H),1.23(td,J=5.3,7.2Hz,6H)ppm;13C NMR(100MHz,CDCl3):δ168.3,168.0,144.9,136.3,134.4,130.3,129.9,129.6,129.5,129.3,129.0,127.4,62.9,61.9,61.8,49.0,27.5,26.9,21.7,14.0,13.9ppm;HRMS(ESI):Calcd for C22H25ClO6S+H 453.1133,found453.1133。
实施例6:
在反应试管中加入对甲基苯磺酰基苯甲醛腙1a 0.1mmol,结构式如2f所示的环丙烷0.2mmol,2.3mg La(OTf)3,2.8mg GaCl3,20mg对二甲苯0.6mL,加热至30℃下搅拌反应10h然后在60℃下再继续反应10h,经萃取、洗涤和干燥得粗产品。粗产品经硅胶层析柱纯化得到单一构型的开环产物,结构式如表6中3f所示,采用核磁共振和高分辨质谱对产物进行表征证实了产物的结构。
表6对甲苯磺酰腙1a与环丙烷2f的反应
3f The product was obtained(petroleum ether/ethyl acetate=10:1(v/v))as a colorless liquid;1H NMR(400MHz,CDCl3):δ7.48(d,J=8.3Hz,2H),7.31(dq,J=1.0,8.0Hz,1H),7.25-7.19(m,3H),7.09(s,1H),7.05(d,J=7.7Hz,1H),4.24(dd,J=4.6,10.9Hz,1H),4.18-4.06(m,4H),3.27(dd,J=5.5,9.6Hz,1H),2.94-2.86(m,1H),2.65-2.56(m,1H),2.41(s,3H),1.23(td,J=0.7,7.1Hz,6H)ppm;13C NMR(100MHz,CDCl3):δ168.3,168.1,145.1,134.5,133.7,133.4,130.0,129.9,129.6,129.4,129.1,128.1,68.1,61.9,61.8,49.0,27.2,26.9,21.7,14.0,14.0ppm;HRMS(ESI):Calcd for C22H25ClO6S+Na475.0953,found 475.0963。
实施例7:
在反应试管中加入对甲基苯磺酰基苯甲醛腙1a 0.4mmol,结构式如2g所示的环丙烷0.56mmol,6.1mg Fe(OTf)3,6.4mg GaCl3,20mg间二甲苯1.5mL,加热至30℃下搅拌反应12h,经萃取、洗涤和干燥得粗产品。粗产品经硅胶层析柱纯化得到单一构型的开环产物,结构式如表7中3g所示,采用核磁共振和高分辨质谱对产物进行表征证实了产物的结构。
表7对甲苯磺酰腙1a与环丙烷2g的反应
3g The product was obtained(petroleum ether/ethyl acetate=10:1(v/v))as a colorless liquid;1H NMR(400MHz,CDCl3):δ7.47(d,J=8.0Hz,2H),7.28-7.22(m,4H),7.09(d,J=8.4Hz,2H),7.09(s,1H),4.26(dd,J=4.5,11.0Hz,1H),4.18-4.05(m,4H),3.24(dd,J=5.4,9.8Hz,1H),2.95-2.7(m,1H),2.64-2.56(m,1H),2.41(s,3H),1.23(td,J=0.9,7.1Hz,6H)ppm;13C NMR(100MHz,CDCl3):δ168.4,168.1,145.0,135.3,133.8,131.3,129.8,129.6,129.0,128.9,67.9,61.9,61.8,49.0,27.2,26.9,21.7,14.0,14.0ppm;HRMS(ESI):Calcd for C22H25ClO6S+Na475.0953,found475.0939。
实施例8:
在反应试管中加入结构式如1b所示的对硝基苯磺酰基苯甲醛腙0.2mmol,环丙烷化合物2a 0.40mmol,2.8mgNi(OTf)2,6.2mg SnCl4,20mg邻二甲苯1.2mL,加热至60℃下搅拌反应10h,经萃取、洗涤和干燥得粗产品。粗产品经硅胶层析柱纯化得到单一构型的开环产物,结构式如表8中3k所示,采用核磁共振和高分辨质谱对产物进行表征证实了产物的结构。
表8对硝基苯磺酰基苯甲醛腙1b与环丙烷2a的反应
3k The product was obtained(petroleum ether/ethyl acetate:10:1(v/v))as a colorless liquid;1H NMR(400MHz,CDCl3):δ8.22(d,J=8.2Hz,2H),7.74(d,J=8.2Hz,2H),7.34(t,J=7.4Hz,1H),7.30-7.25(m,2H),7.13(d,J=7.4Hz,2H),4.39(dd,J=4.3,10.9Hz,1H),4.19-4.07(m,4H),3.29(dd,J=5.2,9.7Hz,1H),3.04-2.96(m,1H),2.75-2.66(m,1H),1.21(t,J=7.1Hz,6H)ppm;13C NMR(100MHz,CDCl3):δ168.2,168.1,150.7,143.0,130.4,130.3,129.9,129.8,129.1,123.8,68.8,61.9,61.8,48.8,26.9,26.8,14.0,13.9ppm。
实施例9:
在反应试管中加入结构式如1c所示的苯磺酰基苯甲醛腙0.4mmol,环丙烷化合物2a 0.60mmol,13.6mg In(OTf)3,10.4mg FeCl3,30mg甲苯1.6mL,加热至35℃下搅拌反应10h,经萃取、洗涤和干燥得粗产品。粗产品经硅胶层析柱纯化得到单一构型的开环产物,结构式如表9中3l所示,采用核磁共振和高分辨质谱对产物进行表征证实了产物的结构。
表9苯磺酰基苯甲醛腙1c与环丙烷2a的反应
3l The product was obtained(petroleum ether/ethyl acetate=10:1(v/v))as a colorless liquid;1H NMR(400MHz,CDCl3):δ7.57-7.54(m,3H),7.39(t,J=7.8Hz,2H),7.33-7.22(m,3H),7.12(d,J=7.2Hz,2H),4.29(dd,J=4.4,11.0Hz,1H),4.20-4.04(m,4H),3.28(dd,J=5.4,9.8Hz,1H),3.00-2.92(m,1H),2.73-2.64(m,1H),1.20(t,J=7.1Hz,6H)ppm;13C NMR(100MHz,CDCl3):δ168.4,168.2,137.1,133.7,131.1,130.0,129.2,129.0,128.7,128.7,68.7,61.8,61.7,49.1,27.1,14.0,13.9ppm。
Claims (10)
1.一种采用芳基磺酰基苯甲醛腙对环丙烷化合物发生开环反应的方法,是以1,1-双酯-2-芳基环丙烷化合物为起始原料,使用芳基磺酰基苯甲醛腙做亲核试剂;其特征在于:该方法是在三氟甲磺酸金属类和卤代金属类双路易斯酸催化剂作用下,于苯类溶剂中发生环丙烷与腙的开环反应,反应温度为25~50℃,得到芳香脂肪多官能团化砜类产物,反应时间在10~24小时之间。
2.根据权利要求1所述的采用芳基磺酰基苯甲醛腙对环丙烷化合物发生开环反应的方法,其特征在于:所述的1,1-双酯-2-芳基环丙烷化合物具有以下结构通式:
式中,X代表H、甲基、甲氧基、硝基或卤素中的一种。
3.根据权利要求1所述的采用芳基磺酰基苯甲醛腙对环丙烷化合物发生开环反应的方法,其特征在于:所述的芳基磺酰基苯甲醛腙化合物具有以下结构通式:
式中,Z代表H、甲基、甲氧基、卤素、硝基中的一种。
4.根据权利要求1所述的采用芳基磺酰基苯甲醛腙对环丙烷化合物发生开环反应的方法,其特征在于:所述三氟甲磺酸金属类路易斯酸包括三氟甲磺酸铟、三氟甲磺酸镧、三氟甲磺酸铁、三氟甲磺酸钪或三氟甲磺酸镍中的一种;所述卤代金属类路易斯酸包括氯化锡、氯化锌、氯化铁、氯化镓或氯化铜中的一种。
5.根据权利要求1所述的采用芳基磺酰基苯甲醛腙对环丙烷化合物发生开环反应的方法,其特征在于:所述的路易斯酸催化剂的用量分别为:三氟甲磺酸金属类路易斯酸催化剂用量为0~15mol%/mmol芳基磺酰基苯甲醛腙化合物;卤代金属类路易斯酸催化剂用量为0~30mol%/mmol芳基磺酰基苯甲醛腙化合物。
6.根据权利要求5所述的采用芳基磺酰基苯甲醛腙对环丙烷化合物发生开环反应的方法,其特征在于:所述的路易斯酸催化剂的用量分别为:三氟甲磺酸金属类路易斯酸催化剂用量为1~10mol%/mmol芳基磺酰基苯甲醛腙化合物;卤代金属类路易斯酸催化剂用量为5~25mol%/mmol芳基磺酰基苯甲醛腙化合物。
7.根据权利要求1所述的采用芳基磺酰基苯甲醛腙对环丙烷化合物发生开环反应的方法,其特征在于:苯类溶剂的用量为2.5~10mL/mmol芳基磺酰基苯甲醛腙化合物。
8.根据权利要求1所述的采用芳基磺酰基苯甲醛腙对环丙烷化合物发生开环反应的方法,其特征在于:所述芳基磺酰基苯甲醛腙与环丙烷化合物的摩尔比为1:1~1:4。
9.根据权利要求8所述的采用芳基磺酰基苯甲醛腙对环丙烷化合物发生开环反应的方法,其特征在于:所述芳基磺酰基苯甲醛腙与环丙烷化合物的摩尔比为1:2~1:3.5。
10.根据权利要求1所述的采用芳基磺酰基苯甲醛腙对环丙烷化合物发生开环反应的方法,其特征在于:所述开环反应的反应温度为25~40℃。
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