CN113620761A - 苯硅烷还原芳基仲酰胺或芳基仲酰胺衍生物合成芳基醛类化合物的制备方法 - Google Patents
苯硅烷还原芳基仲酰胺或芳基仲酰胺衍生物合成芳基醛类化合物的制备方法 Download PDFInfo
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- -1 aryl aldehyde compound Chemical class 0.000 title claims abstract description 83
- PARWUHTVGZSQPD-UHFFFAOYSA-N phenylsilane Chemical compound [SiH3]C1=CC=CC=C1 PARWUHTVGZSQPD-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 230000002194 synthesizing effect Effects 0.000 title claims abstract description 7
- IUYHWZFSGMZEOG-UHFFFAOYSA-M magnesium;propane;chloride Chemical compound [Mg+2].[Cl-].C[CH-]C IUYHWZFSGMZEOG-UHFFFAOYSA-M 0.000 claims abstract description 38
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 31
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 239000002994 raw material Substances 0.000 claims abstract description 14
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims abstract description 14
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002904 solvent Substances 0.000 claims abstract description 13
- 238000010791 quenching Methods 0.000 claims abstract description 12
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 7
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- 150000001875 compounds Chemical class 0.000 claims description 20
- 238000004440 column chromatography Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 8
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- 238000000746 purification Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 abstract description 3
- 229910000510 noble metal Inorganic materials 0.000 abstract description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 48
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 34
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical class [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 15
- 239000000243 solution Substances 0.000 description 13
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 8
- 238000005160 1H NMR spectroscopy Methods 0.000 description 8
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 8
- 239000012300 argon atmosphere Substances 0.000 description 8
- 239000000284 extract Substances 0.000 description 8
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Natural products O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 8
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- 229920006395 saturated elastomer Polymers 0.000 description 5
- 239000007858 starting material Substances 0.000 description 5
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- YIDADDWKWHICOU-UHFFFAOYSA-N 3-[3-(dimethylamino)phenyl]benzaldehyde Chemical compound CN(C)C1=CC=CC(C=2C=C(C=O)C=CC=2)=C1 YIDADDWKWHICOU-UHFFFAOYSA-N 0.000 description 2
- FQMZTQWUVIPGQS-UHFFFAOYSA-N 3-[4-(dimethylamino)phenyl]benzaldehyde Chemical compound C1=CC(N(C)C)=CC=C1C1=CC=CC(C=O)=C1 FQMZTQWUVIPGQS-UHFFFAOYSA-N 0.000 description 2
- BPCNVZGALJUWSO-UHFFFAOYSA-N 4-trimethylsilylbenzaldehyde Chemical compound C[Si](C)(C)C1=CC=C(C=O)C=C1 BPCNVZGALJUWSO-UHFFFAOYSA-N 0.000 description 2
- UWLVWAQSMOVZKN-UHFFFAOYSA-N 5-methylbenzene-1,3-dicarbaldehyde Chemical compound CC1=CC(C=O)=CC(C=O)=C1 UWLVWAQSMOVZKN-UHFFFAOYSA-N 0.000 description 2
- IZALUMVGBVKPJD-UHFFFAOYSA-N benzene-1,3-dicarbaldehyde Chemical compound O=CC1=CC=CC(C=O)=C1 IZALUMVGBVKPJD-UHFFFAOYSA-N 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 239000000543 intermediate Substances 0.000 description 2
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- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 description 2
- 150000003334 secondary amides Chemical class 0.000 description 2
- SCSOTJBZJLEVOI-UHFFFAOYSA-N 1-n,3-n-ditert-butylbenzene-1,3-dicarboxamide Chemical compound CC(C)(C)NC(=O)C1=CC=CC(C(=O)NC(C)(C)C)=C1 SCSOTJBZJLEVOI-UHFFFAOYSA-N 0.000 description 1
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- OTXINXDGSUFPNU-UHFFFAOYSA-N 4-tert-butylbenzaldehyde Chemical compound CC(C)(C)C1=CC=C(C=O)C=C1 OTXINXDGSUFPNU-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- XSZRCKNALYNAJY-UHFFFAOYSA-N N-tert-butyl-3-[3-(dimethylamino)phenyl]benzamide Chemical compound CC(C)(C)NC(C1=CC=CC(C2=CC(N(C)C)=CC=C2)=C1)=O XSZRCKNALYNAJY-UHFFFAOYSA-N 0.000 description 1
- QXRFNJSMOPPXPP-UHFFFAOYSA-N N-tert-butyl-3-[4-(dimethylamino)phenyl]benzamide Chemical compound CC(C)(C)NC(C1=CC=CC(C(C=C2)=CC=C2N(C)C)=C1)=O QXRFNJSMOPPXPP-UHFFFAOYSA-N 0.000 description 1
- MOWUBCGUMAEEAC-UHFFFAOYSA-N N-tert-butyl-4-trimethylsilylbenzamide Chemical compound CC(C)(C)NC(=O)C1=CC=C(C=C1)[Si](C)(C)C MOWUBCGUMAEEAC-UHFFFAOYSA-N 0.000 description 1
- 125000003172 aldehyde group Chemical group 0.000 description 1
- 238000010686 aldehyde synthesis reaction Methods 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
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- 238000012824 chemical production Methods 0.000 description 1
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- 239000002537 cosmetic Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 230000026030 halogenation Effects 0.000 description 1
- 238000005658 halogenation reaction Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 150000002466 imines Chemical group 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- ACNPXPWOTRBDNH-UHFFFAOYSA-N n,4-ditert-butylbenzamide Chemical compound CC(C)(C)NC(=O)C1=CC=C(C(C)(C)C)C=C1 ACNPXPWOTRBDNH-UHFFFAOYSA-N 0.000 description 1
- ZMYTVKMZSNODPU-UHFFFAOYSA-N n-tert-butyl-4-fluorobenzamide Chemical compound CC(C)(C)NC(=O)C1=CC=C(F)C=C1 ZMYTVKMZSNODPU-UHFFFAOYSA-N 0.000 description 1
- HYWWTHOGCJXTRI-UHFFFAOYSA-N n-tert-butylbenzamide Chemical compound CC(C)(C)NC(=O)C1=CC=CC=C1 HYWWTHOGCJXTRI-UHFFFAOYSA-N 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 235000013599 spices Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B41/00—Formation or introduction of functional groups containing oxygen
- C07B41/06—Formation or introduction of functional groups containing oxygen of carbonyl groups
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C221/00—Preparation of compounds containing amino groups and doubly-bound oxygen atoms bound to the same carbon skeleton
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/41—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by hydrogenolysis or reduction of carboxylic groups or functional derivatives thereof
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- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- 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
- C07D333/22—Radicals substituted by doubly bound hetero atoms, or by two hetero atoms other than halogen singly bound to the same carbon atom
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- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/0803—Compounds with Si-C or Si-Si linkages
- C07F7/081—Compounds with Si-C or Si-Si linkages comprising at least one atom selected from the elements N, O, halogen, S, Se or Te
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- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/0803—Compounds with Si-C or Si-Si linkages
- C07F7/0825—Preparations of compounds not comprising Si-Si or Si-cyano linkages
- C07F7/083—Syntheses without formation of a Si-C bond
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Abstract
本发明提供了一种苯硅烷还原芳基仲酰胺或芳基仲酰胺衍生物合成芳基醛类化合物的制备方法。本发明在惰性气氛下,以芳基仲酰胺或芳基仲酰胺衍生物为原料,以苯硅烷为还原剂、以1,4‑二氧六环或四氢呋喃或乙醚为溶剂,在异丙基氯化镁的作用下,40~70℃下反应12~48h,反应完成后淬灭,分离纯化,得到芳基醛产物。整个制备过程实现了芳基仲酰胺到芳基醛的一步转化,具有成本低、反应条件温和、反应收率高的优点,避免了高温苛刻条件和成本较高的贵金属催化剂的使用。
Description
技术领域
本发明属于芳基醛类化合物技术领域,具体涉及一种苯硅烷还原芳基仲酰胺或芳基仲酰胺衍生物合成芳基醛类化合物的制备方法。
背景技术
芳基醛类化合物是重要的合成中间体,广泛应用于药物化学、材料化学、有机合成化学等领域。例如:芳基甲醛是一类重要的化工生产原料和有机合成中间体,被广泛应用于食品、医药、化妆品、染料等行业。然而,目前工业上生产芳基甲醛的方法主要以甲基芳烃的卤化水解法为主,这种工艺不仅给环境造成了污染,而且由于使用该工艺生产的芳基甲醛含有卤化物,从而限制了它在食品、医药、香料行业中的应用;在材料学领域,芳基醛类化合物也是许多高分子聚合物的合成单体;同时,在有机合成中,醛基可以发生一系列转化从而实现新的碳-碳键及碳-杂键的构筑。
近年来,人们对芳基醛衍生物的合成投入了极大的热情,不仅对一些经典芳基醛合成反应提出了改进或扩展了应用范围,有的甚至提出了新颖的反应类型在许多药物及天然产物的合成过程中,针对不同的起始原料和反应环境选择合适的方法形成芳基醛类产物是其核心内容。然而,目前提出的新颖的合成过程中大多需要在高温苛刻的条件下进行或者使用成本较高的贵金属催化剂催化,不仅反应条件苛刻,而且合成成本较大。
鉴于此,有必要继续探索,找到一种更为合适的芳基醛类化合物的制备方法。
发明内容
本发明的目的在于解决现有方法合成芳基醛类化合物反应条件苛刻、合成成本较高的问题,提供一种苯硅烷还原芳基仲酰胺或芳基仲酰胺衍生物合成芳基醛类化合物的制备方法。
为实现上述目的,本发明所提供的技术解决方案是:
一种苯硅烷还原芳基仲酰胺或芳基仲酰胺衍生物合成芳基醛类化合物的制备方法,其特殊之处在于:
在惰性气氛下,以芳基仲酰胺或芳基仲酰胺衍生物为原料,以苯硅烷为还原剂、以1,4-二氧六环或四氢呋喃或乙醚为溶剂,在异丙基氯化镁的作用下,40~70℃下搅拌反应12~48h,加入饱和氯化铵溶液淬灭反应,分离纯化,得到芳基醛产物。其中,以四氢呋喃或乙醚为溶剂时,产物的产率较低,因此,优选1,4-二氧六环作为溶剂。异丙基氯化镁的加入以异丙基氯化镁的四氢呋喃溶液这种方式加入。
进一步地,为了提升反应收率,所述原料、还原剂和异丙基氯化镁的摩尔比为1:2~4:4~8。
进一步地,所述分离纯化采用柱层析法。
进一步地,为了再次降低成本,所述惰性气体为氩气。
进一步地,当所述原料为式I化合物时,芳基醛产物为式I'化合物;
式I和I'中,R1为2-甲氧基、2-乙氧基、2-羟基、3-氟基、3-甲氧基、3-苯氧基、3-甲基、3-甲硫基、3-苯基、3-氧三氟甲基、3-甲氧基、3-氟-5-甲氧基、3,5-二甲基、3,5-二氟基、2-甲氧基-5-氟基、2,5-二甲氧基、4-氟基、4-叔丁基、或者4-三甲基硅基。
当所述原料为式Ⅱ化合物时,芳基醛产物为式Ⅱ'化合物;
当所述原料为式Ⅲ化合物时,芳基醛产物为式Ⅲ'化合物;
当所述原料为式Ⅳ化合物时,芳基醛产物为式Ⅳ'化合物;
当所述原料为式Ⅴ化合物时,芳基醛产物为式Ⅴ'化合物;
当然,也可将上述原料中的“t-Bu”基团,替换为甲基,乙基,异丙基或苯基等。
本发明的优点:
本发明以芳基仲酰胺为底物,使用苯硅烷为还原剂,在异丙基氯化镁作用下,通过C-N键断裂来构建芳基醛。本发明在异丙基氯化镁和苯硅烷的协同作用下(异丙基氯化镁拔掉质子,让芳基仲酰胺变为亚胺结构,同时氧与镁进行配位),实现芳基仲酰胺在适当的温度和时间下得到了芳基醛类化合物,整个制备过程实现了芳基仲酰胺到芳基醛的一步转化,具有成本低、反应条件温和、反应收率高的优点,避免了高温苛刻条件和成本较高的贵金属催化剂的使用。同时,本发明也适用于不同氮取代基及芳基取代的仲酰胺类衍生物转化为芳基醛类化合物。
具体实施方式
以下结合具体实施例对本发明的内容作进一步的详细描述:
实施例1
苯甲醛
氩气氛围下,将(0.4mmol)N-叔丁基苯甲酰胺,(0.8mmol)苯硅烷加入到1,4-二氧六环(2ml)中,在常温下缓慢滴加0.8ml 2mol/L异丙基氯化镁的四氢呋喃溶液,滴加完毕后,60℃下搅拌反应48小时,加入5ml饱和氯化铵水溶液淬灭反应,用乙酸乙酯(每次10ml,3次)萃取,合并萃取液,加入无水硫酸钠干燥,以石油醚:乙酸乙酯=30:1为展开剂用柱层析法分离产物,得到苯甲醛,其产率为97%。
所得产物波普数据:1H NMR(400MHz,CDCl3)δ10.00(s,1H),7.89–7.83(m,2H),7.64–7.57(m,1H),7.51(t,J=7.5Hz,2H);13C NMR(100MHz,CDCl3)δ192.3,136.3,134.4,129.6,128.9.
实施例2
4-氟苯甲醛
氩气氛围下,将(0.4mmol)4-氟-N-叔丁基苯甲酰胺,(0.8mmol)苯硅烷加入到1,4-二氧六环(2ml)中,在常温下缓慢滴加0.8ml 2mol/L异丙基氯化镁的四氢呋喃溶液,滴加完毕后,60℃下搅拌反应48小时,加入5ml饱和氯化铵水溶液淬灭反应,用乙酸乙酯(每次10ml,3次)萃取,合并萃取液,加入无水硫酸钠干燥,以石油醚:乙酸乙酯=30:1为展开剂用柱层析法分离产物,得到4-氟苯甲醛,其产率为93%。
所得产物波普数据:1H NMR(400MHz,CDCl3)δ9.94(s,1H),7.92–7.86(m,2H),7.19(t,J=8.5Hz,2H);13C NMR(100MHz,CDCl3)δ=190.4,166.5(d,J=255Hz),133.0(d,J=2.5Hz),132.2(d,J=9.6Hz),116.3(d,J=22Hz);19F NMR(377MHz,CDCl3)δ-102.49.
实施例3
4-叔丁基苯甲醛
氩气氛围下,将(0.4mmol)4-叔丁基-N-叔丁基苯甲酰胺,(0.8mmol)苯硅烷加入到1,4-二氧六环(2ml)中,在常温下缓慢滴加0.8ml 2mol/L异丙基氯化镁的四氢呋喃溶液,滴加完毕后,60℃下搅拌反应48小时,加入5ml饱和氯化铵水溶液淬灭反应,用乙酸乙酯(每次10ml,3次)萃取,合并萃取液,加入无水硫酸钠干燥,以石油醚:乙酸乙酯=30:1为展开剂用柱层析法分离产物,得到4-氟苯甲醛,其产率为91%。
所得产物波普数据:1H NMR(500MHz,CDCl3)δ9.98(s,1H),7.81(d,J=8.4Hz,2H),7.55(d,J=8.3Hz,2H),1.35(s,9H);13C NMR(125MHz,CDCl3)δ192.0,158.4,134.1,129.7,126.0,35.3,31.0.
实施例4
4'-(二甲氨基)-[1,1'-联苯]-3-甲醛
氩气氛围下,将(0.4mmol)N-(叔丁基)-4'-(二甲氨基)-[1,1'-联苯]-3-甲酰胺,(0.8mmol)苯硅烷加入到1,4-二氧六环(2ml)中,在常温下缓慢滴加0.8ml 2mol/L异丙基氯化镁的四氢呋喃溶液,滴加完毕后,60℃下搅拌反应48小时,加入5ml饱和氯化铵水溶液淬灭反应,用乙酸乙酯(每次10ml,3次)萃取,合并萃取液,加入无水硫酸钠干燥,以石油醚:乙酸乙酯=30:1为展开剂用柱层析法分离产物,得到4'-(二甲氨基)-[1,1'-联苯]-3-甲醛,其产率为89%。
所得产物波普数据:1H NMR(500MHz,CDCl3)δ10.07(s,1H),8.07(s,1H),7.83(d,J=7.7Hz,1H),7.76(d,J=7.6Hz,1H),7.58–7.52(m,3H),6.82(d,J=8.8Hz,2H),3.02(s,6H);13C NMR(125MHz,CDCl3)δ192.6,150.4,142.1,136.9,132.0,129.3,127.7,127.3,127.2,112.7,40.4.
实施例5
3'-(二甲氨基)-[1,1'-联苯]-3-甲醛
氩气氛围下,将(0.4mmol)N-(叔丁基)-3'-(二甲氨基)-[1,1'-联苯]-3-甲酰胺,(0.8mmol)苯硅烷加入到1,4-二氧六环(2ml)中,在常温下缓慢滴加0.8ml 2mol/L异丙基氯化镁的四氢呋喃溶液,滴加完毕后,60℃下搅拌反应48小时,加入5ml饱和氯化铵水溶液淬灭反应,用乙酸乙酯(每次10ml,3次)萃取,合并萃取液,加入无水硫酸钠干燥,以石油醚:乙酸乙酯=30:1为展开剂用柱层析法分离产物,得到3'-(二甲氨基)-[1,1'-联苯]-3-甲醛,其产率为94%。
所得产物波普数据:1H NMR(400MHz,CDCl3)δ10.09(s,1H),8.11(s,1H),7.86(t,J=7.6Hz,2H),7.60(t,J=7.6Hz,1H),7.34(t,J=7.9Hz,1H),7.00–6.90(m,2H),6.79(dd,J=8.3,2.3Hz,1H),3.03(s,6H);13C NMR(125MHz,CDCl3)δ192.5,151.0,143.2,140.7,136.8,133.3,129.6,129.3,128.4,128.4,115.6,112.2,111.2,40.6.
实施例6
4-三甲基硅基苯甲醛
氩气氛围下,将(0.4mmol)4-三甲基硅基-N-叔丁基苯甲酰胺,(0.8mmol)苯硅烷加入到1,4-二氧六环(2ml)中,在常温下缓慢滴加0.8ml 2mol/L异丙基氯化镁的四氢呋喃溶液,滴加完毕后,60℃下搅拌反应48小时,加入5ml饱和氯化铵水溶液淬灭反应,用乙酸乙酯(每次10ml,3次)萃取,合并萃取液,加入无水硫酸钠干燥,以石油醚:乙酸乙酯=30:1为展开剂用柱层析法分离产物,得到4-三甲基硅基苯甲醛,其产率为90%。
所得产物波普数据:1H NMR(500MHz,CDCl3)δ10.02(s,1H),7.84(d,J=8.0Hz,2H),7.69(d,J=8.0Hz,2H),0.31(s,9H);13C NMR(125MHz,CDCl3)δ192.67,149.24,136.44,133.83,128.63,77.25,77.00,76.75,-1.38.
实施例7
5-甲基间苯二醛
氩气氛围下,将(0.4mmol)N1,N3-二叔丁基-5-甲基间苯二甲酰胺,(1.6mmol)苯硅烷加入到1,4-二氧六环(2ml)中,在常温下缓慢滴加1.6ml 2mol/L异丙基氯化镁的四氢呋喃溶液,滴加完毕后,60℃下搅拌反应48小时,加入5ml饱和氯化铵水溶液淬灭反应,用乙酸乙酯(每次10ml,3次)萃取,合并萃取液,加入无水硫酸钠干燥,以石油醚:乙酸乙酯=20:1为展开剂用柱层析法分离产物,得到5-甲基间苯二醛,其产率为85%。
所得产物波普数据:1H NMR(500MHz,CDCl3)δ10.07(d,J=1.0Hz,2H),8.17(s,1H),7.96(s,2H),2.53(s,3H);13C NMR(125MHz,CDCl3)δ191.3,140.3,137.1,135.1,128.7,21.1.
实施例8
间苯二甲醛
氩气氛围下,将(0.4mmol)N1,N3-二叔丁间苯二甲酰胺,(1.6mmol)苯硅烷加入到1,4-二氧六环(2ml)中,在常温下缓慢滴加1.6ml 2mol/L异丙基氯化镁的四氢呋喃溶液,滴加完毕后,60℃下搅拌反应48小时,加入5ml饱和氯化铵水溶液淬灭反应,用乙酸乙酯(每次10ml,3次)萃取,合并萃取液,加入无水硫酸钠干燥,以石油醚:乙酸乙酯=20:1为展开剂用柱层析法分离产物,得到间苯二醛,其产率为87%。
所得产物波普数据:1H NMR(500MHz,CDCl3)δ10.12(s,2H),8.38(s,1H),8.16(dd,J=7.6,0.9Hz,2H),7.74(t,J=7.6Hz,1H);13C NMR(125MHz,CDCl3)δ191.0,137.0,134.6,131.0,129.9.
除了实施例1-8,还可以其他氮取代基及芳基取代的仲酰胺类衍生物为原料,采用本发明的方法制备相应的芳基醛类化合物,具体是:在惰性气氛下,以苯硅烷为还原剂、以1,4-二氧六环或四氢呋喃或乙醚为溶剂,在异丙基氯化镁的作用下,40~70℃下搅拌反应12~48h,加入饱和氯化铵溶液淬灭反应,采用柱层析方法进行分离纯化,得到相应的芳基醛类化合物。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明公开的技术范围内,可轻易想到各种等效的修改或替换,这些修改或替换都应涵盖在本发明的保护范围之内。
Claims (9)
1.一种苯硅烷还原芳基仲酰胺或芳基仲酰胺衍生物合成芳基醛类化合物的制备方法,其特征在于:
在惰性气氛下,以芳基仲酰胺或芳基仲酰胺衍生物为原料,以苯硅烷为还原剂、以1,4-二氧六环或四氢呋喃或乙醚为溶剂,在异丙基氯化镁的作用下,40~70℃下反应12~48h,反应完成后淬灭,分离纯化,得到芳基醛产物。
2.根据权利要求1所述苯硅烷还原芳基仲酰胺或芳基仲酰胺衍生物合成芳基醛类化合物的制备方法,其特征在于:
所述原料、还原剂和异丙基氯化镁的摩尔比为1:2~4:4~8。
3.根据权利要求2所述苯硅烷还原芳基仲酰胺或芳基仲酰胺衍生物合成芳基醛类化合物的制备方法,其特征在于:
所述分离纯化采用柱层析法。
4.根据权利要求1-3任一所述苯硅烷还原芳基仲酰胺或芳基仲酰胺衍生物合成芳基醛类化合物的制备方法,其特征在于:
所述惰性气体为氩气。
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