CN116715666A - 一种1,2,3,4-四氢吡啶并[2,3-d]嘧啶衍生物的合成方法 - Google Patents
一种1,2,3,4-四氢吡啶并[2,3-d]嘧啶衍生物的合成方法 Download PDFInfo
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- VKXUCROJMDAHJO-UHFFFAOYSA-N 1,2,3,4-tetrahydropyrido[2,3-d]pyrimidine Chemical class C1=CN=C2NCNCC2=C1 VKXUCROJMDAHJO-UHFFFAOYSA-N 0.000 title claims description 7
- 238000001308 synthesis method Methods 0.000 title abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- RHQDFWAXVIIEBN-UHFFFAOYSA-N Trifluoroethanol Chemical compound OCC(F)(F)F RHQDFWAXVIIEBN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000011541 reaction mixture Substances 0.000 claims abstract description 7
- QJZUKDFHGGYHMC-UHFFFAOYSA-N pyridine-3-carbaldehyde Chemical class O=CC1=CC=CN=C1 QJZUKDFHGGYHMC-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229940125904 compound 1 Drugs 0.000 claims abstract description 3
- 238000003818 flash chromatography Methods 0.000 claims abstract 2
- 125000002924 primary amino group Chemical class [H]N([H])* 0.000 claims abstract 2
- 230000002194 synthesizing effect Effects 0.000 claims abstract 2
- 239000002904 solvent Substances 0.000 claims description 8
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 claims description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 6
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 claims description 4
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 claims description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 2
- 125000000304 alkynyl group Chemical group 0.000 claims description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 2
- 238000001311 chemical methods and process Methods 0.000 claims description 2
- 229910052801 chlorine Inorganic materials 0.000 claims description 2
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 2
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- JAELLLITIZHOGQ-UHFFFAOYSA-N tert-butyl propanoate Chemical compound CCC(=O)OC(C)(C)C JAELLLITIZHOGQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 2
- 229940083082 pyrimidine derivative acting on arteriolar smooth muscle Drugs 0.000 abstract 1
- 150000003230 pyrimidines Chemical class 0.000 abstract 1
- 150000003141 primary amines Chemical class 0.000 description 6
- 238000007363 ring formation reaction Methods 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 5
- 238000000655 nuclear magnetic resonance spectrum Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 150000001299 aldehydes Chemical class 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 238000004440 column chromatography Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- FANCTJAFZSYTIS-IQUVVAJASA-N (1r,3s,5z)-5-[(2e)-2-[(1r,3as,7ar)-7a-methyl-1-[(2r)-4-(phenylsulfonimidoyl)butan-2-yl]-2,3,3a,5,6,7-hexahydro-1h-inden-4-ylidene]ethylidene]-4-methylidenecyclohexane-1,3-diol Chemical compound C([C@@H](C)[C@@H]1[C@]2(CCCC(/[C@@H]2CC1)=C\C=C\1C([C@@H](O)C[C@H](O)C/1)=C)C)CS(=N)(=O)C1=CC=CC=C1 FANCTJAFZSYTIS-IQUVVAJASA-N 0.000 description 1
- QLVGHFBUSGYCCG-UHFFFAOYSA-N 2-amino-n-(1-cyano-2-phenylethyl)acetamide Chemical compound NCC(=O)NC(C#N)CC1=CC=CC=C1 QLVGHFBUSGYCCG-UHFFFAOYSA-N 0.000 description 1
- CSDSSGBPEUDDEE-UHFFFAOYSA-N 2-formylpyridine Chemical class O=CC1=CC=CC=N1 CSDSSGBPEUDDEE-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000002841 Lewis acid Substances 0.000 description 1
- 238000005917 acylation reaction Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 150000001350 alkyl halides Chemical class 0.000 description 1
- 239000003011 anion exchange membrane Substances 0.000 description 1
- -1 aryl aldehydes Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- OSVHLUXLWQLPIY-KBAYOESNSA-N butyl 2-[(6aR,9R,10aR)-1-hydroxy-9-(hydroxymethyl)-6,6-dimethyl-6a,7,8,9,10,10a-hexahydrobenzo[c]chromen-3-yl]-2-methylpropanoate Chemical compound C(CCC)OC(C(C)(C)C1=CC(=C2[C@H]3[C@H](C(OC2=C1)(C)C)CC[C@H](C3)CO)O)=O OSVHLUXLWQLPIY-KBAYOESNSA-N 0.000 description 1
- 230000006315 carbonylation Effects 0.000 description 1
- 238000005810 carbonylation reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229940125796 compound 3d Drugs 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 150000002192 fatty aldehydes Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 150000007517 lewis acids Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- XBXCNNQPRYLIDE-UHFFFAOYSA-M n-tert-butylcarbamate Chemical compound CC(C)(C)NC([O-])=O XBXCNNQPRYLIDE-UHFFFAOYSA-M 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229940124530 sulfonamide Drugs 0.000 description 1
- 150000003456 sulfonamides Chemical class 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
Classifications
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- 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
- C07D471/12—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 three hetero rings
- C07D471/14—Ortho-condensed systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Catalysts (AREA)
Abstract
本发明公开了一种1,2,3,4‑四氢吡啶并[2,3‑D]嘧啶衍生物的合成方法。所述方法为:在烘箱干燥的反应管中加入烟醛衍生物2(1.0当量,0.1mmol)、三氟乙醇(TFE)(2mL)和伯胺化合物1(2.0当量,0.20mmol)。反应混合物在室温或60℃下剧烈搅拌,并通过TLC进行监测。消耗完2后,将反应混合物真空浓缩,并对残余物进行快速柱色谱纯化,得到产物3。本发明所述的合成方法具有科学合理,合成方法简单,原子经济性好,条件温和,化学选择性高等特点。其反应方程式如下:
Description
技术领域
本发明涉及一种环保且简便的1,2,3,4-四氢吡啶并[2,3-D]嘧啶衍生物的合成方法。
背景技术
吡啶的用途十分广泛,可用于制造维生素、磺胺类药、杀虫剂及塑料等;可作为碱性溶剂使用;是脱酸剂和酰化反应的优良溶剂;也可用作聚合反应、氧化反应、丙烯腈的羰基化反应等的催化剂;还可以用作硅橡胶稳定剂,阴离子交换膜的原料等。
传统方法中,伯胺与醛类的1,5-氢质子转移/环化需要依赖有毒的卤代烷,其缺点是化学选择性低,原子经济性差;近年来,化学家采取了较为环保的方法:醇类做溶剂,路易斯酸做催化剂,但只有在强酸和高温下才能高产率得到产物;同时,有报道称在氟醇促进下的室温条件就可实现伯胺与醛类的1,5-氢质子转移/环化,但这些仅局限在普通芳基醛以及脂肪醛的层面。吡啶环是美国FDA批准的药物中最常见的含氮芳香环结构,在医药和生活中被广泛应用,因此发展一种吡啶类醛衍生物与伯胺进行1,5-氢质子转移/环化的研究方法是十分有意义的。
发明内容
发明目的:为了打破现有底物的局限性,作为对现有1,5-氢质子转移/环化研究方法的补充,本发明提供了一种无催化剂下,1,2,3,4-四氢吡啶并[2,3-D]嘧啶衍生物的合成方法。
技术方案:为实现上述目的,本发明采用的技术方案为:
一种基于无催化剂下,1,2,3,4-四氢吡啶并[2,3-D]嘧啶衍生物的合成方法,所述产物具有式I所示的结构:
R选自苯基、氯原子、溴原子、环丙基等;R1是氢原子,R2则为甲基;R1和R2也可以共同是环戊烷、环庚烷等;R3可以是丙酸乙酯、丙酸叔丁酯等某酸某酯,也可以是苯基、炔基、异丙基等;R4可以是氢原子、甲基、苯基、苄基等。其特征在于,在烘箱干燥的反应管中加入烟醛衍生物2(1.0当量,0.1mmol)、三氟乙醇(TFE)(2mL)和伯胺化合物1(2.0当量,0.20mmol)。反应混合物在室温或60℃下剧烈搅拌,并通过TLC进行监测。消耗完2后,将反应混合物真空浓缩,并对残余物进行快速柱色谱纯化,得到产物3。其化学过程见反应式II:
所述的1,2摩尔比值为2∶1。所述溶剂为2,2,2-三氟乙醇,反应温度为室温或60℃,反应时间为6-12小时。
本发明的有益效果为:本发明提供的1,2,3,4-四氢吡啶并[2,3-D]嘧啶衍生物的合成方法科学合理,拓宽了1,5-氢质子转移/环化研究方法的底物范围,其特点为溶剂使用单一,无金属催化剂;含有不同烷基的伯胺的N,N二烷基化;反应条件温和,原子利用率高。
附图说明
图1为烟醛衍生物和伯胺1,5-氢质子转移/环化化学反应式;
图2为实施例1制备的化合物3a的NMR图谱;
图3为实施例2制备的化合物3b的NMR图谱;
图4为实施例3制备的化合物3c的NMR图谱;
图5为实施例3制备的化合物3d的NMR图谱;
图6为实施例3制备的化合物3e的NMR图谱。
具体实施方式
下面结合附图和具体的实施例对本发明进一步详细说明。
下述实施例中所述试验方法,如无特殊说明,均为常规方法;所述试剂和材料,如无特殊说明,均可从商业途径获得。
实施例1
在烘箱干燥的反应管中加入2-吡咯烷基-1-烟醛2a(1.0当量,0.1mmol)、三氟乙醇(TFE)(2mL)和氨基甲酸叔丁酯1a(2.0当量,0.20mmol)。反应混合物在室温或60℃下剧烈搅拌8h。反应结束后,使用旋转蒸发仪除去溶剂得到粗产物,粗产物经硅胶柱层析分离(200-300目硅胶)(乙酸乙酯),使用旋转蒸发仪除去溶剂,得到目标产物3a,收率为55%。
谱图解析数据3a
1H NMR(400MHz,CDCl3)δ7.96(d,J=5.2Hz,1H),7.07(d,J=7.2Hz,1H),6.43(t,J=6.1Hz,1H),4.51-4.44(m,1H),3.99(d,J=14.9Hz,1H),3.87(d,J=14.9Hz,1H),3.70-3.64(m,1H),3.58-3.49(m,1H),3.27(s,2H),2.23-2.17(m,1H),2.06-2.01(m,1H),1.94-1.86(m,1H),1.81-1.73(m,1H),1.45(s,9H).13C NMR(101MHz,CDCl3)δ169.7,153.7,146.7,133.0,114.4,111.5,81.4,76.8,54.7,52.9,45.5,31.2,28.1,22.3.
实施例2
用1b代替实施例1中的1a,其他条件同实施例1,实验结果见表1。.
谱图解析数据3b
1H NMR(400MHz,CDCl3)δ8.00(d,J=5.0Hz,1H),7.39-7.28(m,6H),6.99(d,J=7.2Hz,1H),6.44(t,J=6.2Hz,1H),4.30(t,J=6.9Hz,1H),3.94(d,J=13.0Hz,1H),3.77(d,J=9.5Hz,1H),3.64(d,J=14.2Hz,2H),3.49(d,J=14.7Hz,1H),3.35(d,J=12.9Hz,1H),2.39-2.30(m,1H),2.18-2.07(m,1H),2.01-1.92(m,2H).13C NMR(101MHz,CDCl3)δ153.70,146.25,137.77,133.18,129.03,128.45,127.34,115.09,111.43,78.61,56.24,53.70,45.90,32.22,29.71,22.45,14.14.
实施例3
用1c代替实施例1中的1a,2c代替实施例1中的2a其他条件同实施例1,实验结果见表1。
谱图解析数据3c
1H NMR(400MHz,CDCl3)δ8.10(s,1H),7.71(d,J=7.3Hz,1H),7.29-7.24(m,2H),7.17(dd,J=14.0,7.3Hz,2H),6.63(d,J=6.3Hz,1H),5.56(s,1H),4.96(dd,J=12.9,4.7Hz,1H),4.38(d,J=17.1Hz,1H),4.13(d,J=7.3Hz,2H),4.01(d,J=16.8Hz,1H),3.24(s,1H),3.20-3.15(m,1H),3.06(t,J=11.2Hz,1H),2.78(d,J=15.8Hz,1H),1.27(s,1H),1.24-1.19(m,3H).13C NMR(101MHz,CDCl3)δ171.0,155.2,146.5,137.2,135.5,129.1,127.9,126.9,115.2,113.9,74.1,60.6,29.5,29.2,27.9,27.0,22.6,14.5.
实施例4
用2d代替实施例3中的2c,其他条件同实施例3,实验结果见表1。
谱图解析数据3d
1H NMR(400MHz,CDCl3)δ7.03(d,J=7.4Hz,1H),6.46(d,J=7.4Hz,1H),4.51(dd,J=8.9,5.6Hz,1H),4.21(q,J=7.2Hz,2H),3.98(d,J=15.0Hz,1H),3.87(d,J=15.0Hz,1H),3.73-3.67(m,1H),3.59-3.52(m,1H),3.37(s,2H),2.24(dt,J=12.2,6.1Hz,1H),2.06(d,J=6.2Hz,1H),1.97-1.89(m,1H),1.83-1.74(m,1H),1.29(t,J=7.1Hz,3H).13C NMR(101MHz,CDCl3)δ170.3,153.5,148.3,135.4,112.2,110.4,61.0,54.3,52.0,45.7,31.1,22.2,14.2.
实施例5
用2e代替实施例4中的2d,其他条件同实施例4,实验结果见表1。
谱图解析数据3e
1H NMR(400MHz,CDCl3)δ7.01(dd,J=23.6,7.4Hz,1H),6.41(dd,J=50.4,7.4Hz,1H),4.51(q,J=8.0Hz,1H),4.26-4.17(m,2H),4.00(d,J=15.1Hz,1H),3.91-3.81(m,1H),3.71(t,J=9.7Hz,1H),3.62-3.51(m,1H),3.36(d,J=12.7Hz,2H),2.29-2.17(m,1H),2.12-1.98(m,1H),1.98-1.82(m,2H),1.81-1.75(m,1H),1.29(q,J=6.1Hz,4H),0.91(d,J=44.9Hz,2H).13C NMR(101MHz,CDCl3)δ170.4,153.6,148.3,135.4,112.2,110.4,61.0,60.9,54.3,52.0,51.9,45.7,31.1,22.3,22.2,14.2.
表1
Claims (3)
1.一种1,2,3,4-四氢吡啶并[2,3-D]嘧啶衍生物的合成方法,所述产物具有式I所示的结构:
R选自苯基、氯原子、溴原子、环丙基等;R1是氢原子,R2则为甲基;R1和R2也可以共同是环戊烷、环庚烷等;R3可以是丙酸乙酯、丙酸叔丁酯等某酸某酯,也可以是苯基、炔基、异丙基等;R4可以是氢原子、甲基、苯基、苄基等。其特征在于,在烘箱干燥的反应管中加入烟醛衍生物2(1.0当量,0.1mmol)、三氟乙醇(TFE)(2mL)和伯胺化合物1(2.0当量,0.20mmol)。反应混合物在室温或60℃下剧烈搅拌,并通过TLC进行监测。消耗完2后,将反应混合物真空浓缩,并对残余物进行快速柱色谱纯化,得到产物3。其化学过程见反应式II:
2.根据权利要求1所述的制备方法,所述的1,2摩尔比值为2∶1。
3.根据权利要求1所述的制备方法,其特征在于:所述溶剂为2,2,2-三氟乙醇,反应温度为室温或60℃,反应时间为6-12小时。
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