CN108276433B - 一种酯的硼氢化方法 - Google Patents
一种酯的硼氢化方法 Download PDFInfo
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- 150000002148 esters Chemical class 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000006197 hydroboration reaction Methods 0.000 title claims abstract description 20
- 229910000071 diazene Inorganic materials 0.000 claims abstract description 49
- 238000006243 chemical reaction Methods 0.000 claims abstract description 40
- LZPWAYBEOJRFAX-UHFFFAOYSA-N 4,4,5,5-tetramethyl-1,3,2$l^{2}-dioxaborolane Chemical compound CC1(C)O[B]OC1(C)C LZPWAYBEOJRFAX-UHFFFAOYSA-N 0.000 claims abstract description 25
- 150000002681 magnesium compounds Chemical class 0.000 claims abstract description 25
- 239000003054 catalyst Substances 0.000 claims abstract description 9
- 239000002904 solvent Substances 0.000 claims abstract description 5
- UHOVQNZJYSORNB-MZWXYZOWSA-N benzene-d6 Chemical group [2H]C1=C([2H])C([2H])=C([2H])C([2H])=C1[2H] UHOVQNZJYSORNB-MZWXYZOWSA-N 0.000 claims description 38
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 12
- RXGUIWHIADMCFC-UHFFFAOYSA-N 2-Methylpropyl 2-methylpropionate Chemical compound CC(C)COC(=O)C(C)C RXGUIWHIADMCFC-UHFFFAOYSA-N 0.000 claims description 8
- WNZQDUSMALZDQF-UHFFFAOYSA-N 2-benzofuran-1(3H)-one Chemical compound C1=CC=C2C(=O)OCC2=C1 WNZQDUSMALZDQF-UHFFFAOYSA-N 0.000 claims description 8
- SESFRYSPDFLNCH-UHFFFAOYSA-N benzyl benzoate Chemical compound C=1C=CC=CC=1C(=O)OCC1=CC=CC=C1 SESFRYSPDFLNCH-UHFFFAOYSA-N 0.000 claims description 8
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 4
- 229960002903 benzyl benzoate Drugs 0.000 claims description 4
- JJTUDXZGHPGLLC-UHFFFAOYSA-N lactide Chemical compound CC1OC(=O)C(C)OC1=O JJTUDXZGHPGLLC-UHFFFAOYSA-N 0.000 claims description 4
- VIMXTGUGWLAOFZ-UHFFFAOYSA-N ethyl 2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropane-1-carboxylate Chemical compound CCOC(=O)C1C(C=C(C)C)C1(C)C VIMXTGUGWLAOFZ-UHFFFAOYSA-N 0.000 claims description 3
- QSUANHXENVRFDN-UHFFFAOYSA-N ethyl 2-thiophen-2-ylacetate Chemical compound CCOC(=O)CC1=CC=CS1 QSUANHXENVRFDN-UHFFFAOYSA-N 0.000 claims description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- DXBULVYHTICWKT-UHFFFAOYSA-N ethyl 6-bromohexanoate Chemical compound CCOC(=O)CCCCCBr DXBULVYHTICWKT-UHFFFAOYSA-N 0.000 claims description 2
- UORVGPXVDQYIDP-UHFFFAOYSA-N borane Chemical compound B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 claims 2
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- 239000000758 substrate Substances 0.000 abstract description 4
- 238000006555 catalytic reaction Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000011777 magnesium Substances 0.000 description 18
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 13
- 229910052749 magnesium Inorganic materials 0.000 description 13
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- 239000013078 crystal Substances 0.000 description 10
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 9
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 8
- 238000001914 filtration Methods 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000005160 1H NMR spectroscopy Methods 0.000 description 6
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- NXPHGHWWQRMDIA-UHFFFAOYSA-M magnesium;carbanide;bromide Chemical compound [CH3-].[Mg+2].[Br-] NXPHGHWWQRMDIA-UHFFFAOYSA-M 0.000 description 5
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- 238000001228 spectrum Methods 0.000 description 3
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- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
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- 238000003786 synthesis reaction Methods 0.000 description 2
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910010084 LiAlH4 Inorganic materials 0.000 description 1
- 239000012448 Lithium borohydride Substances 0.000 description 1
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- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- PZKRHHZKOQZHIO-UHFFFAOYSA-N [B].[B].[Mg] Chemical compound [B].[B].[Mg] PZKRHHZKOQZHIO-UHFFFAOYSA-N 0.000 description 1
- WKRNVFHOUWJZMX-UHFFFAOYSA-N adamantane azide Chemical compound C12CC3CC(CC(C1)C3)C2.[N-]=[N+]=[N-] WKRNVFHOUWJZMX-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001540 azides Chemical class 0.000 description 1
- DMLAVOWQYNRWNQ-UHFFFAOYSA-N azobenzene Chemical compound C1=CC=CC=C1N=NC1=CC=CC=C1 DMLAVOWQYNRWNQ-UHFFFAOYSA-N 0.000 description 1
- 150000001718 carbodiimides Chemical class 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
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- WDPIZEKLJKBSOZ-UHFFFAOYSA-M green s Chemical compound [Na+].C1=CC(N(C)C)=CC=C1C(C=1C2=CC=C(C=C2C=C(C=1O)S([O-])(=O)=O)S([O-])(=O)=O)=C1C=CC(=[N+](C)C)C=C1 WDPIZEKLJKBSOZ-UHFFFAOYSA-M 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 150000002527 isonitriles Chemical class 0.000 description 1
- 239000012280 lithium aluminium hydride Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- PKMBLJNMKINMSK-UHFFFAOYSA-N magnesium;azanide Chemical class [NH2-].[NH2-].[Mg+2] PKMBLJNMKINMSK-UHFFFAOYSA-N 0.000 description 1
- -1 methyl compound Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
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- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical group 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
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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
- C07F3/00—Compounds containing elements of Groups 2 or 12 of the Periodic Table
- C07F3/003—Compounds containing elements of Groups 2 or 12 of the Periodic Table without C-Metal linkages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/18—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony as complexing atoms, e.g. in pyridine ligands, or in resonance therewith, e.g. in isocyanide ligands C=N-R or as complexed central atoms
- B01J31/1805—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony as complexing atoms, e.g. in pyridine ligands, or in resonance therewith, e.g. in isocyanide ligands C=N-R or as complexed central atoms the ligands containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C249/00—Preparation of compounds containing nitrogen atoms doubly-bound to a carbon skeleton
- C07C249/02—Preparation of compounds containing nitrogen atoms doubly-bound to a carbon skeleton of compounds containing imino groups
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C251/00—Compounds containing nitrogen atoms doubly-bound to a carbon skeleton
- C07C251/02—Compounds containing nitrogen atoms doubly-bound to a carbon skeleton containing imino groups
- C07C251/04—Compounds containing nitrogen atoms doubly-bound to a carbon skeleton containing imino groups having carbon atoms of imino groups bound to hydrogen atoms or to acyclic carbon atoms
- C07C251/10—Compounds containing nitrogen atoms doubly-bound to a carbon skeleton containing imino groups having carbon atoms of imino groups bound to hydrogen atoms or to acyclic carbon atoms to carbon atoms of an unsaturated carbon skeleton
- C07C251/12—Compounds containing nitrogen atoms doubly-bound to a carbon skeleton containing imino groups having carbon atoms of imino groups bound to hydrogen atoms or to acyclic carbon atoms to carbon atoms of an unsaturated carbon skeleton being acyclic
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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
- C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
- C07F5/02—Boron compounds
- C07F5/025—Boronic and borinic acid compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
- B01J2531/02—Compositional aspects of complexes used, e.g. polynuclearity
- B01J2531/0213—Complexes without C-metal linkages
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
- B01J2531/02—Compositional aspects of complexes used, e.g. polynuclearity
- B01J2531/0238—Complexes comprising multidentate ligands, i.e. more than 2 ionic or coordinative bonds from the central metal to the ligand, the latter having at least two donor atoms, e.g. N, O, S, P
- B01J2531/0241—Rigid ligands, e.g. extended sp2-carbon frameworks or geminal di- or trisubstitution
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
- B01J2531/20—Complexes comprising metals of Group II (IIA or IIB) as the central metal
- B01J2531/22—Magnesium
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Abstract
本发明公开了一种酯的硼氢化方法:在无水无氧条件下,将β‑二亚胺一价镁化合物溶于溶剂中,加入频哪醇硼烷,再加入酯,室温反应10min。本发明的酯的硼氢化方法,催化剂β‑二亚胺一价镁化合物催化酯与频哪醇硼烷反应的活性高,底物普适性宽,反应催化效率高,产物得率高。
Description
技术领域
本发明涉及硼氢化技术领域,具体涉及一种酯的硼氢化方法。
背景技术
在有机合成中,将酯转化成醇是一种重要的反应。主要有三种方法,一是酯与氢化物反应,二是金属催化剂催化酯与氢气反应,三是金属催化剂催化酯的硅氢化或者硼氢化反应。方法一主要用到LiAlH4和LiBH4。这种方法有很明显的缺点,比如选择性差,容易发生火灾等。方法二也同样有很多缺点,比如需要高温高压,选择性差等[Dupau P.,TranD.M.L.,Gaillard S.,RenaudJ.L.Angew.Chem.,Int.Ed.,2014,53,13004;Tan X.,WangY.,Liu Y.,Wang F.,Shi L.;Lee K.H.,Lin Z.,Lv H.,Zhang X.Org.Lett.,2015,17,454;Pritchard J.,Filonenko G.A.;Putten R.V.,HensenE.J.M.,PidkoE.A.Chem.Soc.Rev.,2015,44,3808;Biermann U.,Friedt W.,Lang S.,Luhs W.,Machmuller G.,MetzgerJ.O.,KlaasM.R.,Schafer H.J.,Schneider M.P.Angew.Chem.,Int.Ed.,2000,39,2206]。由于前两种方法缺点较多,所以,方法三得到了广泛的关注。金属催化剂催化酯的硅氢化反应在上个世纪九十年代就开始研究。主要用到的金属催化剂为过渡金属,如钛,钒,锌,钼,钌,铑,钯等[ S.Das,K.,Junge K.,Beller M.Chem.Eur.J.,2011,17,7414;Fernandez-Salas J.A.,Manzini S.,Nolan S.P.Chem.Commun.,2013,49,9758;LamplandN.L.,Pindwal A.,Neal S.R.Schlauderaff S.,Ellern A.,Sadow A.D.Chem.Sci.,2015,6,6901]。相比于酯的硅氢化反应,酯的硼氢化反应比较少,且催化剂主要是主族金属镁。一是2014年,Sadow等用三齿配体合成了镁的甲基化合物,催化了多种酯的硼氢化反应[Mukherjee D.,Ellern A.,Sadow A.D.Chem.Sci.,2014,5,959]。二是2016年,Okuda等用镁的硼化物高效的催化了酯硼氢化反应[Mukherjee D.,Shirase S.,Spaniol T.P.,Mashima K.,Okuda J.Chem.Commun.,2016,52,13155]。三是2017年,Nembenna等用镁的氨基化合物作为催化剂,催化了许多酯的硼氢化反应[Barman M.K.,Baishya A.,NembennaS.Dalton Trans.,2017,46,4152]。
另一方面,一价镁化合物在有机和无机合成中被广泛应用[Jones C.,NatureReviews Chemistry,2017,1,59]。一价镁化合物可作为双中心双电子的还原剂。例如偶氮苯(PhN=NPh)、碳化二亚胺(CyN=C=NCy)、环辛四烯(COT)和蒽等嵌入一价镁化合物中的Mg—Mg键中。一价镁化合物也可用于不饱和有机底物的N—N和C—C键的偶联反应,如金刚烷叠氮化物与一价镁发生首个由主族金属引发叠氮化合物的N—N偶联反。一价镁化合物与异氰酸酯、腈化物和异腈化物都可发生C—C偶联反应,生成一系列结构新颖的新化合物[Bonyhady S.J.,Green S.P.,Jones C.,Nembenna S.,Stasch A.Angew.Chem.,Int.Ed.2009,48,2973]。
现有报道的有关一价镁化合物的应用都是化学计量的,但是一价镁化合物催化量的应用尚没有报道。
发明内容
发明目的:针对现有技术中存在的不足,本发明的目的是提供一种酯的硼氢化方法,反应催化效率高,反应的活性高,底物普适性宽,产物得率高。
技术方案:为实现上述发明目的,本发明采用的技术方案是:
一种酯的硼氢化方法,反应中所使用的催化剂为β-二亚胺一价镁化合物,所述的β-二亚胺一价镁化合物的结构式如下:
所述的酯的硼氢化方法,在无水无氧条件下,将β-二亚胺一价镁化合物溶于溶剂中,加入频哪醇硼烷,再加入酯,室温反应10min。
所述的酯的硼氢化方法,酯与β-二亚胺一价镁化合物的摩尔比为20:1。
所述的酯包括:乙酸乙酯、异丁酸异丁酯、6-溴己酸乙酯、丙交脂、甲基丙烯酸甲酯、2,2-二甲基-3-(2-甲基-1-丙烯基)环丙烷羧酸乙酯、苯甲酸苄酯、苯酞、2-噻酚乙酸乙酯、天然丙位癸内酯。
所述的溶剂为C6D6。
一种所述β-二亚胺一价镁化合物的制备方法,包括以下步骤:
(1)无水无氧条件下、单口反应管中,将β-二亚胺配体溶于乙醚溶液中,-80~-40℃,甲基溴化镁逐滴加入上述溶液,室温反应8~24h。得到β-二亚胺镁的溴化物;其中β-二亚胺配体、甲基溴化镁的摩尔比为1:1-1.2;其反应式如下:
(2)无水无氧条件下、单口反应管中,β-二亚胺镁的溴化物溶于甲苯溶液中,转移至钠镜,反应3~5d,过滤,浓缩,得到黄色晶体为β-二亚胺一价镁化合物。其中β-二亚胺镁的溴化物、金属钠摩尔比为1:5-20;其反应式如下:
有益效果:与现有技术相比,本发明的制备方法,反应过程简单易操作,实验中所需物品毒性小,安全环保,产物易提纯、得率高,且在室温下可以储存。β-二亚胺一价镁化合物能够有效的催化酯的硼氢化反应,反应催化效率高,反应的活性高,底物普适性宽,产物得率高。
具体实施方式
下面结合实施例对本发明作进一步说明。以下实施例中,过滤、抽干、萃取、浓缩、冷冻结晶、分离等操作步骤属于现有技术,本领域技术人员可以根据实际产物的性质予以选择。
实施例1
β-二亚胺镁的溴化物的制备,过程如下:
在无水无氧下,单口反应管中,β-二亚胺配体3.27mmol溶于25mL乙醚溶液中,-80℃,甲基溴化镁3.92mmol逐滴加入上述溶液,室温反应24h。过滤,固体抽干,滤液浓缩至5mL,得到无色晶体,固体和晶体质量为1.42g,产率为90%。M.p.271-273℃。核磁共振谱:1HNMR(600MHz,C6D6):δ6.99-6.91(m,6H,Ar-H),4.88(s,1H,CH),3.12(s,4H,OCH2CH3),2.65(s,6H,CH3),2.08(s,6H,CH3),1.55(s,6H,NCCH3),0.48(s,6H,OCH2CH3)ppm.13C{1H}NMR(151MHz,C6D6):δ168.87(NCCH3),147.75,131.57,129.56,124.76(Ar-C),95.31(=CH),65.96(OCH2CH3),23.52(OCH2CH3),21.09(NCCH3),18.89,13.15(CH3)ppm.
实施例2
β-二亚胺镁的溴化物的制备,过程如下:
在无水无氧下,单口反应管中,β-二亚胺配体3.27mmol溶于25mL乙醚溶液中,-60℃,甲基溴化镁3.60mmol逐滴加入上述溶液,室温反应15h。过滤,固体抽干,滤液浓缩至5mL,得到无色晶体,固体和晶体质量为1.46g,产率为92%。M.p.271-273℃。核磁共振谱:1HNMR(600MHz,C6D6):δ6.99-6.91(m,6H,Ar-H),4.88(s,1H,CH),3.12(s,4H,OCH2CH3),2.65(s,6H,CH3),2.08(s,6H,CH3),1.55(s,6H,NCCH3),0.48(s,6H,OCH2CH3)ppm.13C{1H}NMR(151MHz,C6D6):δ168.87(NCCH3),147.75,131.57,129.56,124.76(Ar-C),95.31(=CH),65.96(OCH2CH3),23.52(OCH2CH3),21.09(NCCH3),18.89,13.15(CH3)ppm.
实施例3
β-二亚胺镁的溴化物的制备,过程如下:
在无水无氧下,单口反应管中,β-二亚胺配体3.27mmol溶于25mL乙醚溶液中,-40℃,甲基溴化镁3.27mmol逐滴加入上述溶液,室温反应15h。过滤,固体抽干,滤液浓缩至5mL,得到无色晶体,固体和晶体质量为1.49g,产率为94%。M.p.271-273℃。核磁共振谱:1HNMR(600MHz,C6D6):δ6.99-6.91(m,6H,Ar-H),4.88(s,1H,CH),3.12(s,4H,OCH2CH3),2.65(s,6H,CH3),2.08(s,6H,CH3),1.55(s,6H,NCCH3),0.48(s,6H,OCH2CH3)ppm.13C{1H}NMR(151MHz,C6D6):δ168.87(NCCH3),147.75,131.57,129.56,124.76(Ar-C),95.31(=CH),65.96(OCH2CH3),23.52(OCH2CH3),21.09(NCCH3),18.89,13.15(CH3)ppm.
实施例4
β-二亚胺一价镁化合物制备,过程如下:
在无水无氧下,单口反应管中,β-二亚胺镁的溴化物2.83mmol溶于30mL甲苯溶液中,转移至14.15mmol钠镜中,反应5d。过滤,滤液浓缩至2mL,得到黄色晶体[{(XylNacnac)Mg}2],质量为0.56g,产率为60%。M.p.177-179℃。核磁共振谱:1H NMR(600MHz,C6D6):δ7.03(d,JH-H=7.2Hz,8H,Ar-H),6.97(t,JH-H=7.2Hz,4H,Ar-H),4.77(s,2H,CH),1.91(s,24H,CH3),1.50(s,12H,NCCH3)ppm.13C{1H}NMR(151MHz,C6D6):166.31(NCCH3),148.04,131.81,128.46,124.15(Ar-C),95.36(=CH),23.13(NCCH3),19.31(CH3)ppm.
实施例5
β-二亚胺一价化合物镁制备,过程如下:
在无水无氧下,单口反应管中,β-二亚胺镁的溴化物2.83mmol溶于30mL甲苯溶液中,转移至28.3mmol钠镜中,反应4d。过滤,滤液浓缩至2mL,得到黄色晶体[{(XylNacnac)Mg}2],质量为0.54g,产率为59%。M.p.177-179℃。核磁共振谱:1H NMR(600MHz,C6D6):δ7.03(d,JH-H=7.2Hz,8H,Ar-H),6.97(t,JH-H=7.2Hz,4H,Ar-H),4.77(s,2H,CH),1.91(s,24H,CH3),1.50(s,12H,NCCH3)ppm.13C{1H}NMR(151MHz,C6D6):166.31(NCCH3),148.04,131.81,128.46,124.15(Ar-C),95.36(=CH),23.13(NCCH3),19.31(CH3)ppm.
实施例6
β-二亚胺一价镁化合物制备,过程如下:
在无水无氧下,单口反应管中,β-二亚胺镁的溴化物2.83mmol溶于30mL甲苯溶液中,转移至56.6mmol钠镜中,反应3d。过滤,滤液浓缩至2mL,得到黄色晶体[{(XylNacnac)Mg}2],质量为0.56g,产率为60%。M.p.177-179℃。核磁共振谱:1H NMR(600MHz,C6D6):δ7.03(d,JH-H=7.2Hz,8H,Ar-H),6.97(t,JH-H=7.2Hz,4H,Ar-H),4.77(s,2H,CH),1.91(s,24H,CH3),1.50(s,12H,NCCH3)ppm.13C{1H}NMR(151MHz,C6D6):166.31(NCCH3),148.04,131.81,128.46,124.15(Ar-C),95.36(=CH),23.13(NCCH3),19.31(CH3)ppm.
实施例7
β-二亚胺一价镁化合物催化乙酸乙酯与频哪醇硼烷的反应,过程如下:
在手套箱中,在装有0.5mL C6D6的核磁管中依次加入β-二亚胺一价镁化合物0.05mmol,乙酸乙酯1mmol与频哪醇硼烷2mmol,然后将其移出手套箱,反应10min,通过核磁谱图得出产率99%。
实施例8
β-二亚胺一价镁化合物催化异丁酸异丁酯与频哪醇硼烷的反应,过程如下:
在手套箱中,在装有0.5mL C6D6的核磁管中依次加入β-二亚胺一价镁化合物0.05mmol,异丁酸异丁酯1mmol与频哪醇硼烷2mmol,然后将其移出手套箱,反应10min,通过核磁谱图得出产率99%。
实施例9
β-二亚胺一价镁化合物催化6-溴己酸乙酯与频哪醇硼烷的反应,过程如下:
在手套箱中,在装有0.5mL C6D6的核磁管中依次加入β-二亚胺一价镁化合物0.05mmol,6-溴己酸乙酯1mmol与频哪醇硼烷2mmol,然后将其移出手套箱,反应10min,通过核磁谱图得出产率99%。
实施例10
β-二亚胺一价镁化合物催化丙交脂与频哪醇硼烷的反应,过程如下:
在手套箱中,在装有0.5mL C6D6的核磁管中依次加入β-二亚胺一价镁化合物0.05mmol,丙交脂1mmol与频哪醇硼烷2mmol,然后将其移出手套箱,反应10min,通过核磁谱图得出产率99%。
实施例11
β-二亚胺一价镁化合物催化甲基丙烯酸甲酯与频哪醇硼烷的反应,过程如下:
在手套箱中,在装有0.5mL C6D6的核磁管中依次加入β-二亚胺一价镁化合物0.05mmol,甲基丙烯酸甲酯1mmol与频哪醇硼烷2mmol,然后将其移出手套箱,反应10min,通过核磁谱图得出产率99%。
实施例12
β-二亚胺一价镁化合物催化2,2-二甲基-3-(2-甲基-1-丙烯基)环丙烷羧酸乙酯与频哪醇硼烷的反应,过程如下:
在手套箱中,在装有0.5mL C6D6的核磁管中依次加入β-二亚胺一价镁化合物0.05mmol,2,2-二甲基-3-(2-甲基-1-丙烯基)环丙烷羧酸乙酯1mmol与频哪醇硼烷2mmol,然后将其移出手套箱,反应10min,通过核磁谱图得出产率99%。
实施例13
β-二亚胺一价镁化合物催化苯甲酸苄酯与频哪醇硼烷的反应,过程如下:
在手套箱中,在装有0.5mL C6D6的核磁管中依次加入β-二亚胺一价镁化合物0.05mmol,苯甲酸苄酯1mmol与频哪醇硼烷2mmol,然后将其移出手套箱,反应10min,通过核磁谱图得出产率99%。
实施例14
β-二亚胺一价镁化合物催化苯酞与频哪醇硼烷的反应,过程如下:
在手套箱中,在装有0.5mL C6D6的核磁管中依次加入β-二亚胺一价镁化合物0.05mmol,苯酞1mmol与频哪醇硼烷2mmol,然后将其移出手套箱,反应10min,通过核磁谱图得出产率99%。
实施例15
β-二亚胺一价镁化合物催化2-噻酚乙酸乙酯与频哪醇硼烷的反应,过程如下:
在手套箱中,在装有0.5mL C6D6的核磁管中依次加入β-二亚胺一价镁化合物0.05mmol,2-噻酚1mmol与频哪醇硼烷2mmol,然后将其移出手套箱,反应10min,通过核磁谱图得出产率99%。
实施例16
β-二亚胺一价镁化合物催化天然丙位癸内酯与频哪醇硼烷的反应,过程如下:
在手套箱中,在装有0.5mL C6D6的核磁管中依次加入β-二亚胺一价镁化合物0.05mmol,天然丙位癸内酯1mmol与频哪醇硼烷2mmol,然后将其移出手套箱,反应10min,通过核磁谱图得出产率99%。
Claims (4)
2.根据权利要求1所述的酯的硼氢化方法,其特征在于,在无水无氧条件下,将β-二亚胺一价镁化合物溶于溶剂中,加入频哪醇硼烷,再加入酯,室温反应10min。
3.根据权利要求2所述的酯的硼氢化方法,其特征在于,酯与β-二亚胺一价镁化合物的摩尔比为20:1。
4.根据权利要求2所述的酯的硼氢化方法,其特征在于,所述的溶剂为C6D6。
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