CN112175006A - 一种吡啶二苯基膦衍生物的制备方法 - Google Patents
一种吡啶二苯基膦衍生物的制备方法 Download PDFInfo
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- OXGVFLHWGRTWCA-UHFFFAOYSA-N diphenylphosphane;pyridine Chemical class C1=CC=NC=C1.C=1C=CC=CC=1PC1=CC=CC=C1 OXGVFLHWGRTWCA-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title abstract description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 20
- GPAYUJZHTULNBE-UHFFFAOYSA-N diphenylphosphine Chemical compound C=1C=CC=CC=1PC1=CC=CC=C1 GPAYUJZHTULNBE-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000002904 solvent Substances 0.000 claims abstract description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- 150000003222 pyridines Chemical class 0.000 claims abstract description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 38
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 6
- FEYDZHNIIMENOB-UHFFFAOYSA-N 2,6-dibromopyridine Chemical compound BrC1=CC=CC(Br)=N1 FEYDZHNIIMENOB-UHFFFAOYSA-N 0.000 claims description 5
- IMRWILPUOVGIMU-UHFFFAOYSA-N 2-bromopyridine Chemical compound BrC1=CC=CC=N1 IMRWILPUOVGIMU-UHFFFAOYSA-N 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 3
- UYZOWFBHUSJQPJ-UHFFFAOYSA-N 2,6-dibromo-4-(trifluoromethyl)pyridine Chemical compound FC(F)(F)C1=CC(Br)=NC(Br)=C1 UYZOWFBHUSJQPJ-UHFFFAOYSA-N 0.000 claims description 2
- VMKXRAUUPMNAOQ-UHFFFAOYSA-N 2,6-dibromo-4-fluoropyridine Chemical compound BrC1=NC(=CC(=C1)F)Br VMKXRAUUPMNAOQ-UHFFFAOYSA-N 0.000 claims description 2
- FBLLPCQLOGKHAL-UHFFFAOYSA-N 2,6-dibromo-4-methoxypyridine Chemical compound COC1=CC(Br)=NC(Br)=C1 FBLLPCQLOGKHAL-UHFFFAOYSA-N 0.000 claims description 2
- OHBIPNNTWKNAGC-UHFFFAOYSA-N 2,6-dibromo-4-methylpyridine Chemical compound CC1=CC(Br)=NC(Br)=C1 OHBIPNNTWKNAGC-UHFFFAOYSA-N 0.000 claims description 2
- LMFFGAUQSWOBOS-UHFFFAOYSA-N 2,6-dibromo-4-phenylpyridine Chemical compound BrC1=NC(Br)=CC(C=2C=CC=CC=2)=C1 LMFFGAUQSWOBOS-UHFFFAOYSA-N 0.000 claims description 2
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- 239000007810 chemical reaction solvent Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims 1
- 238000003786 synthesis reaction Methods 0.000 abstract description 9
- 239000003054 catalyst Substances 0.000 abstract description 7
- 229910000510 noble metal Inorganic materials 0.000 abstract description 2
- 238000011031 large-scale manufacturing process Methods 0.000 abstract 1
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 24
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 21
- 239000000047 product Substances 0.000 description 17
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 12
- 238000004440 column chromatography Methods 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 8
- 239000003480 eluent Substances 0.000 description 8
- 238000004809 thin layer chromatography Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000012043 crude product Substances 0.000 description 7
- 239000012074 organic phase Substances 0.000 description 7
- 238000002390 rotary evaporation Methods 0.000 description 7
- -1 catalysis Substances 0.000 description 5
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- QKJAZPHKNWSXDF-UHFFFAOYSA-N 2-bromoquinoline Chemical compound C1=CC=CC2=NC(Br)=CC=C21 QKJAZPHKNWSXDF-UHFFFAOYSA-N 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052723 transition metal Inorganic materials 0.000 description 3
- 150000003624 transition metals Chemical class 0.000 description 3
- AWBDARKONATUHX-UHFFFAOYSA-N 2-bromo-4-methoxypyridine Chemical compound COC1=CC=NC(Br)=C1 AWBDARKONATUHX-UHFFFAOYSA-N 0.000 description 2
- ZIDIKYIZXMYHAW-UHFFFAOYSA-N 2-bromo-6-fluoropyridine Chemical compound FC1=CC=CC(Br)=N1 ZIDIKYIZXMYHAW-UHFFFAOYSA-N 0.000 description 2
- XIYPPJVLAAXYAB-UHFFFAOYSA-N 2-bromo-6-phenylpyridine Chemical compound BrC1=CC=CC(C=2C=CC=CC=2)=N1 XIYPPJVLAAXYAB-UHFFFAOYSA-N 0.000 description 2
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- UHOVQNZJYSORNB-MZWXYZOWSA-N benzene-d6 Chemical compound [2H]C1=C([2H])C([2H])=C([2H])C([2H])=C1[2H] UHOVQNZJYSORNB-MZWXYZOWSA-N 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- NHKJPPKXDNZFBJ-UHFFFAOYSA-N phenyllithium Chemical compound [Li]C1=CC=CC=C1 NHKJPPKXDNZFBJ-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 description 2
- BMYQNHCCMHXCBE-UHFFFAOYSA-N (4-methoxypyridin-2-yl)-diphenylphosphane Chemical compound COC1=CC=NC(P(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BMYQNHCCMHXCBE-UHFFFAOYSA-N 0.000 description 1
- PKLZMHUUPARTDZ-UHFFFAOYSA-N (4-methylpyridin-2-yl)-diphenylphosphane Chemical compound CC1=CC=NC(P(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 PKLZMHUUPARTDZ-UHFFFAOYSA-N 0.000 description 1
- UNCDYUGALDQNLL-UHFFFAOYSA-N (6-diphenylphosphanylpyridin-2-yl)-diphenylphosphane Chemical compound C1=CC=CC=C1P(C=1N=C(C=CC=1)P(C=1C=CC=CC=1)C=1C=CC=CC=1)C1=CC=CC=C1 UNCDYUGALDQNLL-UHFFFAOYSA-N 0.000 description 1
- WJOVTBUNFQDWRK-UHFFFAOYSA-N (6-fluoropyridin-2-yl)-diphenylphosphane Chemical compound FC1=CC=CC(P(C=2C=CC=CC=2)C=2C=CC=CC=2)=N1 WJOVTBUNFQDWRK-UHFFFAOYSA-N 0.000 description 1
- LSZMVESSGLHDJE-UHFFFAOYSA-N 2-bromo-4-methylpyridine Chemical compound CC1=CC=NC(Br)=C1 LSZMVESSGLHDJE-UHFFFAOYSA-N 0.000 description 1
- DNWSVXHWEWBVSJ-UHFFFAOYSA-N 2-diphenylphosphorylpyridine Chemical compound C=1C=CC=CC=1P(C=1N=CC=CC=1)(=O)C1=CC=CC=C1 DNWSVXHWEWBVSJ-UHFFFAOYSA-N 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- XZWFALQAPDAOON-UHFFFAOYSA-N diphenyl(quinolin-2-yl)phosphane Chemical compound C1=CC=CC=C1P(C=1N=C2C=CC=CC2=CC=1)C1=CC=CC=C1 XZWFALQAPDAOON-UHFFFAOYSA-N 0.000 description 1
- HTFATWMNNPRCRJ-UHFFFAOYSA-N diphenyl-(6-phenylpyridin-2-yl)phosphane Chemical compound C1=CC=CC=C1P(C=1N=C(C=CC=1)C=1C=CC=CC=1)C1=CC=CC=C1 HTFATWMNNPRCRJ-UHFFFAOYSA-N 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000013110 organic ligand Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- NBRKLOOSMBRFMH-UHFFFAOYSA-N tert-butyl chloride Chemical compound CC(C)(C)Cl NBRKLOOSMBRFMH-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
- C07F9/553—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having one nitrogen atom as the only ring hetero atom
- C07F9/576—Six-membered rings
- C07F9/58—Pyridine rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
- C07F9/553—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having one nitrogen atom as the only ring hetero atom
- C07F9/576—Six-membered rings
- C07F9/60—Quinoline or hydrogenated quinoline ring systems
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Pyridine Compounds (AREA)
Abstract
本发明涉及一种吡啶二苯基膦衍生物的制备方法,属有机合成领域。该方法在氮气保护下,将吡啶衍生物、二苯基膦、KOH加入溶剂中,100~120℃下反应,获得吡啶二苯基膦衍生物。本发明以KOH为催化剂,避免使用贵金属催化剂,降低了成本,绿色环保;而且操作安全稳定,产率高,适合规模化生产。
Description
技术领域
本发明属于有机化合物的制备技术领域,涉及一种二苯基膦衍生物的制备方法,具体涉及一种吡啶二苯基膦衍生物的制备方法。
背景技术
吡啶二苯基膦衍生物是一种重要的化工中间体材料和催化剂配体,广泛应用于医药、农药、催化、材料等领域。目前国内外报道的吡啶二苯基膦衍生物的合成方法,一般分为以下三种:
第一种方法是采用吡啶类金属试剂同二苯基膦卤代物反应制备。该方法使用了对水氧敏感且活性非常高的有机金属试剂,反应条件比较苛刻,官能团兼容性差,产生定量的金属盐副产物,不符合绿色化学的发展要求(Chin. J. Org. Chem., 2018, 38(8), 2151-2160)。
第二种方法是使用碱金属同有机磷试剂反应生成二苯基膦碱金属盐,再与卤代吡啶类化合物反应制备。该方法同样需要非常苛刻的操作条件,如果采用三苯基膦为起始原料,容易产生杂质苯基锂,其活性较高,对后续反应产生影响,需要加入氯代叔丁烷消耗反应过程中产生的苯基锂,工业上不易操作;而采用二苯基膦和丁基锂为起始原料,需要非常低的温度,且要求严格无水无氧环境 (Chem. Eur. J., 2009, 15(29), 7167-7179;Organometallics, 2020, 39(14), 2682–2694) 。
第三种方法是卤代芳烃与二苯基膦通过过渡金属催化合成制备,这种方法使用昂贵的过渡金属催化剂,或者难以得到的过渡金属配合物催化剂,这些都加大了反应成本和难度,不适宜工业化操作 (Chem. Commun., 2015, 51(35), 7540-7542; J. Organomet.Chem., 2018, 866, 50-58) 。因此,为满足工业化生产需求目前急需对吡啶二苯基膦的制备方法进行改进。
发明内容
本发明目的在于提供一种反应条件温和、适用范围广泛、产率高、成本低、符合绿色化学要求的吡啶二苯基膦衍生物制备方法。
为实现本发明目的,采用以下技术方案:
所述制备吡啶二苯基膦衍生物的方法:将吡啶衍生物、二苯基膦、KOH加入溶剂中,氮气保护下于100~120℃下反应,获得吡啶二苯基膦衍生物;按摩尔比计,吡啶衍生物∶二苯基膦∶KOH用量为1∶(1~2)∶(3~5)。
所述吡啶衍生物如下列化学结构通式所示:
其中R的选择可以是H、F、甲基、甲氧基、CF3、苯基等;
所述吡啶二苯基膦衍生物的化学结构通式如下所示:
优选的技术方案中,吡啶衍生物选自2-溴吡啶、3(或4或5或6)-氟-2-溴吡啶、3(或4或5或6)-甲基-2-溴吡啶、3(或4或5或6)-甲氧基-2-溴吡啶、3(或4或5或6)-三氟甲基-2-溴吡啶、3(或4或5或6)-苯基-2-溴吡啶、2,6-二溴吡啶、4-氟-2,6-二溴吡啶、4-甲基-2,6-二溴吡啶、4-甲氧基-2,6-二溴吡啶、4-三氟甲基-2,6-二溴吡啶、4-苯基-2,6-二溴吡啶的一种。
上述技术方案中,利用薄层色谱跟踪反应直至完全结束。
优选的技术方案中,所述溶剂为DMF或DMSO。
优选的技术方案中,反应温度为100-110℃。
优选的技术方案中,反应结束后对产物进行柱层析分离提纯处理;柱层析时以二氯甲烷为洗脱剂。
上述技术方案的反应过程可表示为:
由于上述技术方案的运用,本发明与现有技术相比具有下列优点:
1.本发明采用KOH做为催化剂,便宜易得,无需使用贵金属催化剂和其他有机配体,原料利用率高,产物收率高,达90 %以上,减少了废弃物的产生,大大降低了成本。
2.本发明公开的制备方法适用范围广,对于3位、4位、5位、6位有取代基的2-溴吡啶及4位取代的2,6-二溴吡啶都可以发生反应,将二苯基膦基团导入吡啶环。此外,该制备方法还适用于2-溴喹啉等多环苯并吡啶。
3.本发明公开的制备方法反应条件温和、反应操作和后处理过程简单,绿色环保,安全性高,适合工业化生产。
4.本发明可能的机理为:在KOH的催化作用下,吡啶环先脱去一分子HBr,生成高活性中间体吡啶炔,接着发生加成反应而引入官能团,得到目标化合物。
具体实施方式
下面结合实施例对本发明作进一步描述:
实施例一:2-二苯基膦基吡啶的合成
2-溴吡啶1.58g(10mmol),二苯基膦2.79g(15mmol)加入到20ml无氧DMF中,随后加入KOH2.24g(40mmol),在氮气保护下110℃反应。薄层色谱跟踪反应进度,至2-溴吡啶反应完全,反应结束。反应液用乙酸乙酯与水萃取,取有机相旋蒸除去溶剂,粗产物经柱层析分离(洗脱剂为二氯甲烷),得到目标产物(产率93%)。产物的分析数据如下:1 H NMR (400 MHz, CDCl3):δ 8.73 (d, J = 3.6 Hz, 1H), 7.55 (t, J = 7.6 Hz, 1H), 7.40-7.25 (m,10H), 7.16 (t, J = 5.8 Hz, 1H), 7.09 (d, J = 8.0 Hz, 1H) ppm。
实施例二:2-二苯基膦基-4-甲基吡啶的合成
2-溴-4-甲基吡啶1.72g(10mmol),二苯基膦3.72g(20mmol)加入到20ml无氧DMF中,随后加入KOH2.24g(40mmol),在氮气保护下110℃反应。薄层色谱跟踪反应进度,至2-溴-4-甲基吡啶反应完全,反应结束。反应液用乙酸乙酯与水萃取,取有机相旋蒸除去溶剂,粗产物经柱层析分离(洗脱剂为二氯甲烷),得到目标产物(产率91%)。产物的分析数据如下:1 HNMR (400 MHz , CDCl3):δ 8.55 (d, J = 4.6 Hz, 1H), 7.42-7.26 (m, 10H), 7.03(d, J = 4.1 Hz, 1H), 6.94 (s, 1H), 2.26 (s, 3H) ppm。
实施例三:2-二苯基膦基-6-氟吡啶的合成
2-溴-6-氟吡啶1.76g(10mmol),二苯基膦2.79g(15mmol)加入到20ml无氧DMSO中,随后加入KOH1.68g(30mmol),在氮气保护下105℃反应。薄层色谱跟踪反应进度,至2-溴-6-氟吡啶反应完全,反应结束。反应液用乙酸乙酯与水萃取,取有机相旋蒸除去溶剂,粗产物经柱层析分离(洗脱剂为二氯甲烷),得到目标产物(产率92%)。产物的分析数据如下:1 H NMR(400 MHz , CDCl3):δ 7.67-7.59 (m, 1H), 7.45 -7.33 (m, 10H), 6.98 -6.93 (m,1H), 6.81 -6.76 (m, 1H)ppm。
实施例四:2-二苯基膦基-4-甲氧基吡啶的合成
2-溴-4-甲氧基吡啶1.88g(10mmol),二苯基膦1.86g(10mmol)加入到20ml无氧DMF中,随后加入KOH1.68g(30mmol),在氮气保护下110℃反应。薄层色谱跟踪反应进度,至2-溴-4-甲氧基吡啶反应完全,反应结束。反应液用乙酸乙酯与水萃取,取有机相旋蒸除去溶剂,粗产物经柱层析分离(洗脱剂为二氯甲烷),得到目标产物(产率93%)。产物的分析数据如下:1 H NMR (400 MHz, CDCl3):δ 8.50-8.47 (m, 1H), 7.42-7.33 (m, 10H), 6.73-6.70(m, 1H), 6.66-6.63 (m, 1H), 3.72 (s, 3H) ppm。
实施例五:2-二苯基膦基-6-苯基吡啶的合成
2-溴-6-苯基吡啶2.34g(10mmol),二苯基膦2.79g(15mmol)加入到20ml无氧DMF中,随后加入KOH2.24g(40mmol),在氮气保护下100℃反应。薄层色谱跟踪反应进度,至2-溴-6-苯基吡啶反应完全,反应结束。反应液用乙酸乙酯与水萃取,取有机相旋蒸除去溶剂,粗产物经柱层析分离(洗脱剂为二氯甲烷),得到目标产物(产率90%)。产物的分析数据如下:1 HNMR (400 MHz, C6D6):δ 8.03-7.99 (m, 2H), 7.59-7.51 (m, 4H), 7.21-7.04 (m,10H), 7.00-6.96 (m, 2H) ppm。
实施例六:2,6-二(二苯基膦基)吡啶的合成
2,6-二溴吡啶2.08g(10mmol),二苯基膦3.72g(20mmol)加入到20ml无氧DMF中,随后加入KOH2.24g(40mmol),在氮气保护下110℃反应。薄层色谱跟踪反应进度,至2,6-二溴吡啶反应完全,反应结束。反应液用乙酸乙酯与水萃取,取有机相旋蒸除去溶剂,粗产物经柱层析分离(洗脱剂为二氯甲烷),得到目标产物(产率91%)。产物的分析数据如下:1 H NMR(400 MHz , CDCl3):δ 7.72 -7.68 (m, 1H), 7.48-7.41 (m, 14H), 7.11-7.20 (m, 8H)ppm。
实施例七:2-二苯基膦基喹啉的合成
2-溴喹啉2.08g(10mmol),二苯基膦3.72g(20mmol)加入到20ml无氧DMF中,随后加入KOH2.8g(50mmol),在氮气保护下110℃反应。薄层色谱跟踪反应进度,至2-溴喹啉反应完全,反应结束。反应液用乙酸乙酯与水萃取,取有机相旋蒸除去溶剂,粗产物经柱层析分离(洗脱剂为二氯甲烷),得到目标产物(产率92%)。产物的分析数据如下:1 H NMR (400 MHz, CDCl3):δ 8.11 (d, J = 8.8 Hz, 1H), 7.85 (d, J = 8.4 Hz, 1H), 7.62 (d, J =8.4 Hz, 1H), 7.57 (t, J = 7.8 Hz, 1H), 7.52-7.40 (m, 4H), 7.38 (t, J = 7.6Hz, 1H), 7.30-7.21 (m, 6H), 7.15 (d, J = 8.4 Hz, 1H)ppm。
Claims (3)
2.根据权利要求1所述制备吡啶二苯基膦衍生物的方法,其特征在于:所述吡啶衍生物选自2-溴吡啶、3(或4或5或6)-氟-2-溴吡啶、3(或4或5或6)-甲基-2-溴吡啶、3(或4或5或6)-甲氧基-2-溴吡啶、3(或4或5或6)-三氟甲基-2-溴吡啶、3(或4或5或6)-苯基-2-溴吡啶、2,6-二溴吡啶、4-氟-2,6-二溴吡啶、4-甲基-2,6-二溴吡啶、4-甲氧基-2,6-二溴吡啶、4-三氟甲基-2,6-二溴吡啶、4-苯基-2,6-二溴吡啶的一种。
3.根据权利要求1或2所述制备吡啶二苯基膦衍生物的方法,其特征在于:按摩尔比计,吡啶衍生物∶二苯基膦∶KOH用量为1∶(1~2)∶(3~5)。
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