CN110156657B - 一种4-氨基吲哚的合成方法 - Google Patents
一种4-氨基吲哚的合成方法 Download PDFInfo
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- LUNUNJFSHKSXGQ-UHFFFAOYSA-N 4-Aminoindole Chemical compound NC1=CC=CC2=C1C=CN2 LUNUNJFSHKSXGQ-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000001308 synthesis method Methods 0.000 title claims abstract description 8
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000003446 ligand Substances 0.000 claims abstract description 17
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 17
- 239000003054 catalyst Substances 0.000 claims abstract description 13
- 150000001448 anilines Chemical class 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 239000003513 alkali Substances 0.000 claims abstract description 4
- 150000001412 amines Chemical class 0.000 claims abstract description 4
- 125000003518 norbornenyl group Chemical class C12(C=CC(CC1)C2)* 0.000 claims abstract description 4
- 230000009471 action Effects 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 16
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 claims description 10
- 125000000217 alkyl group Chemical group 0.000 claims description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 239000002585 base Substances 0.000 claims description 6
- FJDQFPXHSGXQBY-UHFFFAOYSA-L caesium carbonate Chemical compound [Cs+].[Cs+].[O-]C([O-])=O FJDQFPXHSGXQBY-UHFFFAOYSA-L 0.000 claims description 6
- 229910000024 caesium carbonate Inorganic materials 0.000 claims description 6
- YJVFFLUZDVXJQI-UHFFFAOYSA-L palladium(ii) acetate Chemical compound [Pd+2].CC([O-])=O.CC([O-])=O YJVFFLUZDVXJQI-UHFFFAOYSA-L 0.000 claims description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 6
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims description 6
- 125000002252 acyl group Chemical group 0.000 claims description 5
- 229910052736 halogen Inorganic materials 0.000 claims description 5
- 150000002367 halogens Chemical class 0.000 claims description 5
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 5
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical class NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052794 bromium Inorganic materials 0.000 claims description 4
- 229910052801 chlorine Inorganic materials 0.000 claims description 4
- 230000002194 synthesizing effect Effects 0.000 claims description 4
- PAGZTSLSNQZYEV-UHFFFAOYSA-L 2,2-dimethylpropanoate;palladium(2+) Chemical compound [Pd+2].CC(C)(C)C([O-])=O.CC(C)(C)C([O-])=O PAGZTSLSNQZYEV-UHFFFAOYSA-L 0.000 claims description 3
- 125000003342 alkenyl group Chemical group 0.000 claims description 3
- 150000001345 alkine derivatives Chemical class 0.000 claims description 3
- 125000003545 alkoxy group Chemical group 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 3
- 229910052740 iodine Inorganic materials 0.000 claims description 3
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 claims description 3
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 claims description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 3
- 229910000160 potassium phosphate Inorganic materials 0.000 claims description 3
- 235000011009 potassium phosphates Nutrition 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 239000001488 sodium phosphate Substances 0.000 claims description 3
- 229910000162 sodium phosphate Inorganic materials 0.000 claims description 3
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 3
- YNHIGQDRGKUECZ-UHFFFAOYSA-N dichloropalladium;triphenylphosphanium Chemical compound Cl[Pd]Cl.C1=CC=CC=C1[PH+](C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1[PH+](C=1C=CC=CC=1)C1=CC=CC=C1 YNHIGQDRGKUECZ-UHFFFAOYSA-N 0.000 claims 1
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- XTRDKALNCIHHNI-UHFFFAOYSA-N 2,6-dinitrotoluene Chemical compound CC1=C([N+]([O-])=O)C=CC=C1[N+]([O-])=O XTRDKALNCIHHNI-UHFFFAOYSA-N 0.000 description 2
- CCTRTOOVOGWKCC-UHFFFAOYSA-N 4-phenylmethoxymorpholine Chemical compound C(ON1CCOCC1)c1ccccc1 CCTRTOOVOGWKCC-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 238000004440 column chromatography Methods 0.000 description 2
- UKVIEHSSVKSQBA-UHFFFAOYSA-N methane;palladium Chemical compound C.[Pd] UKVIEHSSVKSQBA-UHFFFAOYSA-N 0.000 description 2
- HZVOZRGWRWCICA-UHFFFAOYSA-N methanediyl Chemical compound [CH2] HZVOZRGWRWCICA-UHFFFAOYSA-N 0.000 description 2
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 2
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- GIAHBIGCKKVQIZ-UHFFFAOYSA-N 1-phenylmethoxypiperazine Chemical compound C=1C=CC=CC=1CON1CCNCC1 GIAHBIGCKKVQIZ-UHFFFAOYSA-N 0.000 description 1
- UVVVFGSFGDHACP-UHFFFAOYSA-N 1h-indole;1h-pyrrole Chemical compound C=1C=CNC=1.C1=CC=C2NC=CC2=C1 UVVVFGSFGDHACP-UHFFFAOYSA-N 0.000 description 1
- 125000006304 2-iodophenyl group Chemical group [H]C1=C([H])C(I)=C(*)C([H])=C1[H] 0.000 description 1
- PLAZTCDQAHEYBI-UHFFFAOYSA-N 2-nitrotoluene Chemical compound CC1=CC=CC=C1[N+]([O-])=O PLAZTCDQAHEYBI-UHFFFAOYSA-N 0.000 description 1
- MGSDOEMLWKEWSV-UHFFFAOYSA-N 4-(1h-indol-4-yl)-n-phenylpiperazine-1-carboxamide Chemical compound C1CN(C=2C=3C=CNC=3C=CC=2)CCN1C(=O)NC1=CC=CC=C1 MGSDOEMLWKEWSV-UHFFFAOYSA-N 0.000 description 1
- YZKSXUIOKWQABW-UHFFFAOYSA-N 4-piperazin-1-yl-1h-indole Chemical compound C1CNCCN1C1=CC=CC2=C1C=CN2 YZKSXUIOKWQABW-UHFFFAOYSA-N 0.000 description 1
- 102000003688 G-Protein-Coupled Receptors Human genes 0.000 description 1
- 108090000045 G-Protein-Coupled Receptors Proteins 0.000 description 1
- 101000929698 Homo sapiens Aspartate aminotransferase, cytoplasmic Proteins 0.000 description 1
- 101000904228 Homo sapiens Vesicle transport protein GOT1A Proteins 0.000 description 1
- 101000904204 Homo sapiens Vesicle transport protein GOT1B Proteins 0.000 description 1
- ZSXGLVDWWRXATF-UHFFFAOYSA-N N,N-dimethylformamide dimethyl acetal Chemical compound COC(OC)N(C)C ZSXGLVDWWRXATF-UHFFFAOYSA-N 0.000 description 1
- -1 N- (tert-butyl) -3-iodopyridin-2-amine Chemical compound 0.000 description 1
- 102100024010 Vesicle transport protein GOT1A Human genes 0.000 description 1
- DXGTUUQHTDOFFQ-UHFFFAOYSA-N [N].C1=CC=C2NC=CC2=C1 Chemical group [N].C1=CC=C2NC=CC2=C1 DXGTUUQHTDOFFQ-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- ABMPRVXXRMEXNQ-UHFFFAOYSA-N decan-3-amine Chemical compound CCCCCCCC(N)CC ABMPRVXXRMEXNQ-UHFFFAOYSA-N 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- RFAFYJVMLIIYNW-UHFFFAOYSA-N n-tert-butyl-2-iodoaniline Chemical compound CC(C)(C)NC1=CC=CC=C1I RFAFYJVMLIIYNW-UHFFFAOYSA-N 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
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- 229910052757 nitrogen Inorganic materials 0.000 description 1
- LYGJENNIWJXYER-UHFFFAOYSA-N nitromethane Chemical compound C[N+]([O-])=O LYGJENNIWJXYER-UHFFFAOYSA-N 0.000 description 1
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- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 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
- C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
- C07D209/04—Indoles; Hydrogenated indoles
- C07D209/08—Indoles; Hydrogenated indoles with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to carbon atoms of the hetero ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
- C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
- C07D405/04—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
- C07D471/04—Ortho-condensed systems
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Indole Compounds (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
本发明公开了一种4‑氨基吲哚的合成方法,以苯胺衍生物、胺类衍生物和降冰片烯衍生物为原料,在钯催化剂作用下,加入配体和碱,反应,制备得到4‑氨基吲哚衍生物。该方法成本低,一步构建4‑氨基吲哚;产物可以用于药物的合成;产率高;操作步骤简便;溶剂不需要进一步处理。
Description
技术领域
本发明属于医药化工技术领域,具体涉及一种4-氨基吲哚的合成方法。
背景技术
吲哚是天然产物中最常见的分子骨架,而吲哚的衍生物与生命活动密切相关。综述“药物中的环”报告说,目前销售的24种药物都有吲哚环。而4-氨基吲哚普遍具有生物活性的,可以被作为药物砌块。例如4-哌嗪基吲哚可用作G蛋白偶联受体(GPCRS);4-(1H-吲哚-4-基)-N-苯基哌嗪-1-甲酰胺是GOT1抑制剂,用于治疗胰腺导管腺癌。
由于吲哚吡咯侧的亲核活性很高,因此吲哚的2或3位置选择性C-H官能团已获得成功。近年来,利用在吲哚氮原子引入导向基团,可以吲哚在6或7位置引入官能团的方法。然而吲哚4位的直接官能团化反应还没有被发明。目前的合成方法以邻硝基甲苯为原料,经进一步硝化合成了2-甲基-1,3-二硝基苯,其产率小于10%。然后2-甲基-1,3-二硝基苯与N,N-二甲基甲酰胺二甲基缩醛(DMFDMA)进行亲核加成反应,并经历过渡金属催化还原来得到4-氨基吲哚骨架。整个过程的反应条件苛刻,并且难以合成高官能团化的4-氨基吲哚。
因此,4位官能团化的吲哚的合成一直是一个尚未解决的问题,并引起了人们的广泛关注。
发明内容
本发明的目的是为了解决上述问题,提供一种反应条件温和,收率高,成本低,后处理简单的合成各种取代4-氨基吲哚的方法。
本发明的目的通过以下技术方案来具体实现:
一种4-氨基吲哚的合成方法,以苯胺衍生物、胺类衍生物和降冰片烯衍生物为原料,在钯催化剂作用下,加入配体和碱,反应,制备得到4-氨基吲哚衍生物。
进一步的,所述方法的反应式如下:
式中:基团X为I、Br、Cl或三氟甲磺酸基;基团X’包括但不限于OBz、Cl或OTs;基团R1为烷基、烯基、硝基、酰基、卤素、烷氧基、氧酯基、炔烃或芳基,苯胺衍生物上可有一个或多个不同的R1基团;R2,R3,R4包括但不限于烷基;R5,R6,R7包括但不限于烷基、卤素、硝基或酰基。
进一步的,所述钯催化剂为醋酸钯、氯化钯、新戊酸钯、钯碳、金属钯、二三苯基膦二氯化钯或四三苯基膦钯中的一种。
进一步的,所述配体为三苯基膦类衍生物、双齿膦配体、Buchwald配体类衍生物或卡宾类配体中的一种。
进一步的,所述碱为碳酸铯、碳酸钾、碳酸钠、磷酸钾、磷酸钠或三乙胺中的一种。
进一步的,所述反应在60-150℃下进行。
进一步的,所述钯催化剂与配体的摩尔比为1:2;所述钯催化剂与苯胺衍生物的摩尔比为1:10;所述碱与苯胺衍生物的摩尔比为4:1。
本发明具有以下有益效果:
本发明提供的4-氨基吲哚的合成方法,成本低,一步构建4-氨基吲哚;产物可以用于药物的合成;产率高;操作步骤简便;溶剂不需要进一步处理。
具体实施方式
一种合成各种取代4-氨基吲哚的合成方法,可采用下列反应式:
式中:基团X为I、Br、Cl或三氟甲磺酸基OTf等;基团X’包括但不限于OBz、Cl或OTs等类似离去基团;基团R1为烷基、烯基、硝基、酰基、卤素(Br、Cl)、烷氧基、氧酯基、炔烃或芳基等分子基团,苯胺衍生物上可有一个或多个不同的R1基团;R2,R3,R4包括但不限于烷基(伯碳、仲碳、叔碳);R5,R6,R7包括但不限于烷基、卤素、硝基或酰基。
具体步骤为:
(1)将苯胺衍生物和胺类衍生物加到反应容器中,加入钯催化剂、配体和碱。排去反应容器中空气,并替换为惰性气体(如氩气,氮气等),然后加入溶剂和降冰片烯类衍生物,密封,升温至60-150℃进行反应。
(2)使用薄层色谱、气相色谱等检测反应进度,待反应原料消失。过滤,用乙酸乙酯洗涤。收集滤液,减压浓缩,并柱层析分离,得4-氨基吲哚类衍生物。
作为优选的,钯催化剂为醋酸钯、氯化钯、新戊酸钯、钯碳、金属钯、二三苯基膦二氯化钯或四三苯基膦钯中的一种。
作为优选的,配体为三苯基膦类衍生物、双齿膦配体、Buchwald配体类衍生物或卡宾类配体等常用配体中的一种。
作为优选的,碱为碳酸铯、碳酸钾、碳酸钠、磷酸钾、磷酸钠或三乙胺等常用无机有机碱中的一种。
作为优选地,钯催化剂与配体的摩尔比为1:2;钯催化剂与苯胺衍生物的摩尔比为1:10;碱与苯胺衍生物的摩尔比为4:1。
作为优选的,溶剂为乙腈、二氯甲烷、四氢呋喃、二氧六环、二甲基甲酰胺、硝基甲烷、甲苯或二氯乙烷等常用溶剂中的一种。
作为优选地,柱层析时使用的流动相为体积比10-15:1的石油醚:乙酸乙酯。
实施例1
在100ml烧瓶中,添加N-叔丁基邻碘苯胺(4mmol,1.10g)、苯甲氧基哌嗪(8mmol,2.45g)、醋酸钯(0.4mmol,89.6mg)、三苯基膦(0.8mmol,209.6mg)、碳酸铯(16mmol,5.22g)。然后在氩气氛围下加入甲苯(50ml)和降冰片二烯(14mmol,1.42mL)。用盖子密封。将所得的淡黄色悬浮液在室温下搅拌15分钟,然后置于145℃预加热的油浴中,在900~1200转/分钟搅拌36小时。反应结束后,过滤,用乙酸乙酯洗涤。收集滤液,减压浓缩。用硅胶色谱柱(石油醚/乙酸乙酯=15:1)纯化残留物,最终得到白色固体(1.17g,产率82.0%)。
产物检测数据如下:
1H NMR(400MHz,Chloroform-d)δ7.35(d,J=8.4Hz,1H),7.23(d,J=3.4Hz,1H),7.09(t,J=8.0Hz,1H),6.58(d,J=7.5Hz,1H),6.42(d,J=3.3Hz,1H),3.66(t,J=5.0Hz,4H),3.17(t,J=4.9Hz,4H),1.72(s,9H),1.50(s,9H).13C NMR(101MHz,Chloroform-d)δ154.88,145.61,135.99,123.95,123.91,121.16,108.73,106.26,98.20,79.62,55.75,51.40,29.78,28.42.
实施例2
在100ml烧瓶中,添加N-(叔丁基)-3-碘吡啶-2-胺(4mmol,1.10g)、苯甲氧基吗啉(8mmol,1.66g)、醋酸钯(0.4mmol,89.6mg)、三苯基膦(0.8mmol,209.6mg)、碳酸铯(16mmol,5.22g)。然后在氩气氛围下加入甲苯(50ml)和降冰片二烯(14mmol,1.42mL)。用盖子密封。将所得的淡黄色悬浮液在室温下搅拌15分钟,然后置于145℃预加热的油浴中,在900~1200转/分钟搅拌36小时。反应结束后,过滤,用乙酸乙酯洗涤。收集滤液,减压浓缩。用硅胶色谱柱(石油醚/乙酸乙酯=10:1)纯化残留物,最终得到白色固体(0.77g,产率75.0%)。
产物检测数据如下:
1H NMR(400MHz,Chloroform-d)δ8.15(d,J=5.4Hz,1H),7.22(d,J=3.7Hz,1H),6.41(d,J=5.4Hz,1H),6.34(d,J=3.7Hz,1H),3.93–3.88(m,4H),3.42–3.36(m,4H),1.79(s,9H).13C NMR(101MHz,Chloroform-d)δ151.19,149.27,142.94,122.77,112.83,101.56,97.01,66.85,56.34,50.02,29.30.
实施例3
在100ml烧瓶中,添加N-(2-碘苯基)-1,4-二氧硅[4.5]癸-8-胺(4mmol,1.44g)、苯甲氧基吗啉(8mmol,1.66g)、醋酸钯(0.4mmol,89.6mg)、三苯基膦(0.8mmol,209.6mg)、碳酸铯(16mmol,5.22g)。然后在氩气氛围下加入甲苯(50ml)和降冰片二烯(14mmol,1.42mL)。用盖子密封。将所得的淡黄色悬浮液在室温下搅拌15分钟,然后置于145℃预加热的油浴中,在900~1200转/分钟搅拌36小时。反应结束后,过滤,用乙酸乙酯洗涤。收集滤液,减压浓缩。用硅胶色谱柱(石油醚/乙酸乙酯=12:1)纯化残留物,最终得到白色固体(0.96g,产率70.0%)。
产物检测数据如下:
1H NMR(400MHz,Chloroform-d)δ7.20–7.05(m,3H),6.57(d,J=7.3Hz,1H),6.48(d,J=3.2Hz,1H),4.34–4.19(m,1H),3.98(s,4H),3.96–3.88(m,4H),3.29–3.15(m,4H),2.15–1.71(m,8H).13C NMR(101MHz,Chloroform-d)δ145.60,136.74,122.68,121.90,121.55,107.63,106.11,104.41,99.60,67.26,64.43,64.32,53.79,51.78,34.01,30.08.
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (3)
2.根据权利要求1所述的4-氨基吲哚的合成方法,其特征在于,所述反应在60-150℃下进行。
3.根据权利要求1所述的4-氨基吲哚的合成方法,其特征在于,所述钯催化剂与配体的摩尔比为1:2;所述钯催化剂与苯胺衍生物的摩尔比为1:10;所述碱与苯胺衍生物的摩尔比为4:1。
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