CN106117115B - 一种n-取代咔唑的合成方法 - Google Patents
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- -1 N- substituted carbazole Chemical class 0.000 title claims abstract description 25
- 238000010189 synthetic method Methods 0.000 title claims description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims abstract description 41
- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 10
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 9
- 239000012074 organic phase Substances 0.000 claims abstract description 9
- 238000010791 quenching Methods 0.000 claims abstract description 9
- 230000000171 quenching effect Effects 0.000 claims abstract description 9
- 239000003446 ligand Substances 0.000 claims abstract description 8
- 239000002904 solvent Substances 0.000 claims abstract description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 8
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 8
- 229910052801 chlorine Inorganic materials 0.000 claims description 8
- 239000000460 chlorine Substances 0.000 claims description 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Natural products CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 7
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 6
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 6
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 5
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 5
- 229910052731 fluorine Inorganic materials 0.000 claims description 5
- 239000011737 fluorine Substances 0.000 claims description 5
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 5
- AUHZEENZYGFFBQ-UHFFFAOYSA-N mesitylene Substances CC1=CC(C)=CC(C)=C1 AUHZEENZYGFFBQ-UHFFFAOYSA-N 0.000 claims description 4
- 125000001827 mesitylenyl group Chemical group [H]C1=C(C(*)=C(C([H])=C1C([H])([H])[H])C([H])([H])[H])C([H])([H])[H] 0.000 claims description 4
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 3
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052794 bromium Inorganic materials 0.000 claims description 3
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical group II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 125000003944 tolyl group Chemical group 0.000 claims description 2
- 238000005292 vacuum distillation Methods 0.000 claims description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 claims 2
- UJOBWOGCFQCDNV-UHFFFAOYSA-N Carbazole Natural products C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 claims 1
- 125000000609 carbazolyl group Chemical class C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 claims 1
- 238000004809 thin layer chromatography Methods 0.000 abstract description 7
- 229910052723 transition metal Inorganic materials 0.000 abstract description 5
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- 125000001309 chloro group Chemical class Cl* 0.000 abstract 1
- 238000009776 industrial production Methods 0.000 abstract 1
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- 238000001308 synthesis method Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 description 6
- 238000011049 filling Methods 0.000 description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- KVKFRMCSXWQSNT-UHFFFAOYSA-N n,n'-dimethylethane-1,2-diamine Chemical compound CNCCNC KVKFRMCSXWQSNT-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 2
- 229910021575 Iron(II) bromide Inorganic materials 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000003810 ethyl acetate extraction Methods 0.000 description 2
- 229940046149 ferrous bromide Drugs 0.000 description 2
- GYCHYNMREWYSKH-UHFFFAOYSA-L iron(ii) bromide Chemical compound [Fe+2].[Br-].[Br-] GYCHYNMREWYSKH-UHFFFAOYSA-L 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- QKCKTWNZAFSJHB-UHFFFAOYSA-N 1-fluoro-9-methylcarbazole Chemical compound FC1=CC=CC=2C3=CC=CC=C3N(C1=2)C QKCKTWNZAFSJHB-UHFFFAOYSA-N 0.000 description 1
- KEONHFKRLYKNJD-UHFFFAOYSA-N 2-iodo-N-methyl-N-phenylaniline Chemical class C=1C=CC=C(I)C=1N(C)C1=CC=CC=C1 KEONHFKRLYKNJD-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- SDFLTYHTFPTIGX-UHFFFAOYSA-N 9-methylcarbazole Chemical compound C1=CC=C2N(C)C3=CC=CC=C3C2=C1 SDFLTYHTFPTIGX-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010054949 Metaplasia Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000003851 azoles Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- XYIBRDXRRQCHLP-UHFFFAOYSA-N ethyl acetoacetate Chemical compound CCOC(=O)CC(C)=O XYIBRDXRRQCHLP-UHFFFAOYSA-N 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 239000002085 irritant Substances 0.000 description 1
- 231100000021 irritant Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 125000002924 primary amino group Chemical class [H]N([H])* 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D209/56—Ring systems containing three or more rings
- C07D209/80—[b, c]- or [b, d]-condensed
- C07D209/82—Carbazoles; Hydrogenated carbazoles
- C07D209/86—Carbazoles; Hydrogenated carbazoles with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the ring system
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D209/56—Ring systems containing three or more rings
- C07D209/80—[b, c]- or [b, d]-condensed
- C07D209/82—Carbazoles; Hydrogenated carbazoles
- C07D209/88—Carbazoles; Hydrogenated carbazoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the ring system
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Indole Compounds (AREA)
Abstract
本发明涉及化学合成方法,旨在提供一种N‑取代咔唑的合成方法。该方法是:将卤代N‑取代二苯胺与配体加入同一溶剂中溶解后,将所得溶液滴加至叔丁醇钾中,在30~160℃下搅拌反应6~12小时;加入饱和氯化钠淬灭反应后,用乙酸乙酯萃取三次,合并有机相;无水硫酸钠干燥后过滤、减压蒸馏,除去乙酸乙酯,再以薄层色谱分离得到N‑取代咔唑。本发明克服了现有技术必须使用过渡金属的不足,反应条件绿色温和,适于工业化生产。
Description
技术领域
本发明涉及一种化学合成方法,具体是一种高价值化学片段—咔唑类化合物的合成方法。
背景技术
N-取代咔唑是一种重要的化学模块,它广泛存在于天然产物,医药和光电材料中。
Yanzhong Li等(TETRAHEDRON 2009,65,8961-8968)报导了二碘联苯与伯胺在碘化亚铜和DMEDA的催化作用下,生成N-取代咔唑的合成方法,如下式:
但该方法使用了过渡金属铜及昂贵的配体DMEDA,增加了生产成本;且DMEDA易挥发有刺激性气味,不利于大规模生产。
Ying等(CHEMICAL COMMUNICATIONS 2014,50,9049-9052)报导了2-胺基联苯在钯碳催化下,氧气作为氧化剂,进行分子内C-N键偶联生成N-取代咔唑的合成方法。该方法使用较高的温度,且需要加热37小时,在工业中难以实现。
Katkevics等(Chemistry of Heterocyclic Compounds 2013,49)描述了N-甲基碘代二苯胺在溴化亚铁和红菲啰啉催化下,合成N-甲基咔唑的方法。但该方法中使用的红菲啰啉和溴化亚铁价格昂贵,不利于大规模生产。
以上方法都需要过渡金属的参与,而即使痕量的过渡金属残余都会对药物及光电材料产生不利的影响。
发明内容
本发明要解决的技术问题是,克服现有技术中的不足,提供一种N-取代咔唑的合成方法。
为解决技术问题,本发明的解决方案是:
提供一种N-取代咔唑的合成方法,包括以下步骤:
将卤代N-取代二苯胺与配体加入同一溶剂中溶解后,将所得溶液滴加至叔丁醇钾中,在30℃~160℃下搅拌反应6~12小时;加入饱和氯化钠淬灭反应后,用乙酸乙酯萃取三次,合并有机相;无水硫酸钠干燥后过滤、减压蒸馏,除去乙酸乙酯,再以薄层色谱分离得到N-取代咔唑;
其中,卤代N-取代二苯胺与叔丁醇钾、配体的摩尔比为1∶2~5∶0.2~0.6;
所述N-取代二苯胺具有如下结构式:
式中,R1、R2为甲基、甲氧基、叔丁基、乙基、氟或氯;R’为脂肪烷基;X为碘、溴或氯。
本发明中,所述配体是1,10-菲啰啉、正丁醇、乙二醇、1,3-丙二醇或异丙醇中的任意一种。
本发明中,所述溶剂为甲苯、均三甲苯、二甲亚砜或二氧六环。
本发明中,所述N-取代咔唑具有如下结构式:
式中,R1、R2为甲基、甲氧基、叔丁基、乙基、氟或氯;R’为脂肪烷基。
本发明的的合成路线如下:
式中,R1、R2为甲基、甲氧基、叔丁基、乙基、氟或氯;R’为脂肪烷基;X为碘、溴或氯。
与现有技术相比,本发明的有益效果在于:
本发明克服了现有技术必须使用过渡金属的不足,反应条件绿色温和,适于工业化生产。
具体实施方式
下述方法是为了更好的说明本发明内容。但本发明不限于下述反应。
实施例1
将(0.224g,2mmol)叔丁醇钾放置于干燥的烧瓶中,将(0.309g,1mmol)2-碘-N-甲基-N-苯基苯胺和(25mg,0.4mmol)乙二醇溶解于5mL的二甲亚砜中。将上述溶液滴加进盛有叔丁醇钾的干燥烧瓶中,30℃下搅拌6小时。用饱和氯化钠淬灭反应,乙酸乙酯萃取三次,合并有机相,用无水硫酸钠干燥,过滤,减压蒸馏,除去乙酸乙酯。薄层色谱分离得到N-甲基咔唑,产率为83.6%。
实施例2
将(0.336g,3mmol)叔丁醇钾放置于干燥的烧瓶中,将(0.339g,1mmol)2-碘-N-甲基-N-(4-甲氧基苯基)苯胺和(15mg,0.2mmol)1,3-丙二醇溶解于5mL的甲苯中。将上述溶液滴加进盛有叔丁醇钾的干燥烧瓶中,50℃下搅拌12小时。用饱和氯化钠淬灭反应,乙酸乙酯萃取三次,合并有机相,用无水硫酸钠干燥,过滤,减压蒸馏,除去乙酸乙酯。薄层色谱分离得到3-甲氧基-9-甲基咔唑,产率为76.5%。
实施例3
将(0.560g,5mmol)叔丁醇钾放置于干燥的烧瓶中,将(0.305g,1mmol)2-溴-N,4-二甲基-N-(4-甲氧基苯基)苯胺和(44mg,0.6mmol)正丁醇溶解于5mL的二氧六环中。将上述溶液滴加进盛有叔丁醇钾的干燥烧瓶中,100℃下搅拌8小时。用饱和氯化钠淬灭反应,乙酸乙酯萃取三次,合并有机相,用无水硫酸钠干燥,过滤,减压蒸馏,除去乙酸乙酯。薄层色谱分离得到3-甲氧基-6,9-二甲基咔唑,产率为63.8%。
实施例4
将(0.560g,5mmol)叔丁醇钾放置于干燥的烧瓶中,将(0.306g,1mmol)2-溴-N-乙基-N-(4-甲氧基苯基)苯胺和(59mg,0.3mmol)乙二醇溶解于5mL的均三甲苯中。将上述溶液滴加进盛有叔丁醇钾的干燥烧瓶中,130℃下搅拌10小时。用饱和氯化钠淬灭反应,乙酸乙酯萃取三次,合并有机相,用无水硫酸钠干燥,过滤,减压蒸馏,除去乙酸乙酯。薄层色谱分离得到3-甲氧基-9-乙基咔唑,产率为56.3%。
实施例5
将(0.448g,4mmol)叔丁醇钾放置于干燥的烧瓶中,将(0.276g,1mmol)2-氯-N-丁基-N-(4-甲氧基苯基)苯胺和(59mg,0.3mmol)1,10-菲啰啉溶解于5mL的均三甲苯中。将上述溶液滴加进盛有叔丁醇钾的干燥烧瓶中,160℃下搅拌8小时。用饱和氯化钠淬灭反应,乙酸乙酯萃取三次,合并有机相,用无水硫酸钠干燥,过滤,减压蒸馏,除去乙酸乙酯。薄层色谱分离得到3-甲氧基-9-丁基咔唑,产率为43.7%。
实施例6
将(0.336g,3mmol)叔丁醇钾放置于干燥的烧瓶中,将(0.327g,1mmol)2-碘-N-甲基-N-(4-氟苯基)苯胺和(36mg,0.6mmol)异丙醇溶解于5mL的二甲亚砜中。将上述溶液滴加进盛有叔丁醇钾的干燥烧瓶中,60℃下搅拌12小时。用饱和氯化钠淬灭反应,乙酸乙酯萃取三次,合并有机相,用无水硫酸钠干燥,过滤,减压蒸馏,除去乙酸乙酯。薄层色谱分离得到3-氟-9-甲基咔唑,产率为67.2%。
Claims (2)
1.一种N-取代咔唑的合成方法,其特征在于,包括以下步骤:
将卤代N-取代二苯胺与配体加入同一溶剂中溶解后,将所得溶液滴加至叔丁醇钾中,在30℃~160℃下搅拌反应6~12小时;加入饱和氯化钠淬灭反应后,用乙酸乙酯萃取三次,合并有机相;无水硫酸钠干燥后过滤、减压蒸馏,除去乙酸乙酯,再以薄层色谱分离得到N-取代咔唑;
其中,卤代N-取代二苯胺与叔丁醇钾、配体的摩尔比为1∶2~5∶0.2~0.6;所述配体是正丁醇、乙二醇、1,3-丙二醇或异丙醇中的任意一种;
所述N-取代二苯胺具有如下结构式:
式中,R1、R2为甲基、甲氧基、叔丁基、乙基、氟或氯;R’为脂肪烷基;X为碘、溴或氯;
所述N-取代咔唑具有如下结构式:
式中,R1、R2为甲基、甲氧基、叔丁基、乙基、氟或氯;R’为脂肪烷基。
2.根据权利要求1所述的方法,其特征在于,所述溶剂为甲苯、均三甲苯、二甲亚砜或二氧六环。
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