CN108558923A - Application of the anilino- lithium in catalysis ketone and borine hydroboration - Google Patents

Application of the anilino- lithium in catalysis ketone and borine hydroboration Download PDF

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Publication number
CN108558923A
CN108558923A CN201810336699.7A CN201810336699A CN108558923A CN 108558923 A CN108558923 A CN 108558923A CN 201810336699 A CN201810336699 A CN 201810336699A CN 108558923 A CN108558923 A CN 108558923A
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CN
China
Prior art keywords
ketone
borine
hydroboration
lithium
anilino
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Application number
CN201810336699.7A
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Chinese (zh)
Inventor
薛明强
朱章野
徐晓娟
颜丹丹
郑煜
沈琪
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Suzhou University
Zhangjiagang Institute of Industrial Technologies Soochow University
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Suzhou University
Zhangjiagang Institute of Industrial Technologies Soochow University
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Priority to CN201810336699.7A priority Critical patent/CN108558923A/en
Publication of CN108558923A publication Critical patent/CN108558923A/en
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F5/00Compounds containing elements of Groups 3 or 13 of the Periodic Table
    • C07F5/02Boron compounds
    • C07F5/04Esters of boric acids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/02Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • B01J31/0234Nitrogen-, phosphorus-, arsenic- or antimony-containing compounds
    • B01J31/0235Nitrogen containing compounds
    • B01J31/0252Nitrogen containing compounds with a metal-nitrogen link, e.g. metal amides, metal guanidides

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)

Abstract

The application of anilino- lithium of the present invention, and in particular to anilino- lithium is in catalysis ketone and the efficient application in borine hydroboration;Under anhydrous and oxygen-free environment, in atmosphere of inert gases, borine is added in the reaction bulb by dehydration and deoxidation processing, catalyst aniline base lithium is then added, is uniformly mixed, adds ketone, hydroboration occurs, is exposed in air and terminates reaction, obtain borate;The ketone is aliphatic ketone.Catalyst disclosed by the invention has preferable universality for the aliphatic ketone of different structure, and the boric acid ester compound to obtain different substituents structure provides more selections.

Description

Application of the anilino- lithium in catalysis ketone and borine hydroboration
Technical field
The application of anilino- lithium of the present invention, and in particular to anilino- lithium is in catalysis ketone and borine hydroboration Efficient application.
Technical background
For the hydroboration of equivalent catalysis of carbonyl class compound, obtained borate ester product is hydrolyzed, It is the very effective method of synthol in contemporary Synthetic Organic Chemistry.The product boric acid ester compound of hydroboration, no But it can be used as polymeric additive, gasoline additive, fire retardant, bactericidal agent use, it is also possible to make special surfactant, moisten Oil additive and motor vehicle brake fluid etc., application range is very extensive.Therefore, for the hydroboration research of unsaturated bond, All have great importance for modern industry and Synthetic Organic Chemistry, is widely paid close attention to so as to cause researcher.
Various catalyst have been used for the hydroboration of ketone, especially in recent years, about this kind of reaction It reports many.Since under no catalysts conditions, the hydroboration of carbonyls is difficult to occur.So for this one kind The research emphasis of reaction exactly develops efficient catalyst system and catalyzing.But the catalyst system and catalyzing reported at present, catalyst are all opposite Costliness or reaction condition are more harsh.
Although belonging to carbonyls, ketone and aldehyde have different reaction properties, this is common sense, and the prior art exists simultaneously Using keto-aldehyde as raw material, but only there is a situation where a kind of raw materials to react;Electron donating group can weaken the electropositive of carbonyl carbon, to cut The nucleophilic addition activity of weak carbonyl, aromatic aldehyde is since conjugation reduces carbonyl activity, to different the position of substitution, different electronic effects Aromatic compound and fatty compound have and larger react difference.So developing efficient catalytic ketone under new temperate condition Hydroboration catalyst system and catalyzing it is particularly urgent.
Invention content
The goal of the invention of the present invention is to provide the application of anilino- lithium, i.e., using anilino- lithium be effective catalyst be catalyzed ketone and The application of hydroboration occurs for borine;The anilino- lithium chemical formula is:PhNHLi, chemical structural formula are as follows:
To achieve the above object of the invention, the technical solution adopted by the present invention is:Anilino- lithium is anti-in catalysis ketone and borine hydroboration Application in answering;The ketone is aliphatic ketone.
The invention also discloses the methods of anilino- lithium catalysis ketone and borine generation hydroboration, include the following steps:
Under anhydrous and oxygen-free environment, under atmosphere of inert gases, borine is added in the reaction bulb by dehydration and deoxidation processing, then adds Enter anilino- lithium, be uniformly mixed, add ketone, hydroboration occurs.
The present invention further discloses a kind of preparation method of borate, includes the following steps:
Under anhydrous and oxygen-free environment, in atmosphere of inert gases, borine is added in the reaction bulb by dehydration and deoxidation processing, then adds Enter catalyst aniline base lithium, be uniformly mixed, add ketone, hydroboration occurs, is exposed in air and terminates reaction, obtain boron Acid esters;The ketone is aliphatic ketone.
In above-mentioned technical proposal, the aliphatic ketone is selected from methyl isopropyl ketone, 4- heptanone;The borine is selected from pinacol Borine;The dosage of the catalyst is the 0.2-0.3% of ketone mole, and the molar ratio of ketone and borine is 1: 1.1, hydroboration Temperature be room temperature, the reaction time be 30-40 minutes.
Above-mentioned technical proposal can indicate as follows:
R1, R2Come from raw ketone.
Due to the application of the above technical scheme, the present invention has the following advantages compared with prior art:
1. present invention firstly discovers that anilino- lithium, which extremely can efficiently be catalyzed methyl isopropyl ketone, 4- heptanone and borine, occurs boron Hydrogenation provides new scheme to prepare borate with borine generation hydroboration using carbonyls.
2. high (the catalyst use of catalytic activity that hydroboration occurs with borine for anilino- lithium catalysis ketone disclosed by the invention Amount is only 0.2-0.3 %), reaction condition is mild (room temperature), and the reaction time is short (30 ~ 40 min), and reaction yield is high, reaction letter Single controllable, post-processing is simple, and reaction uses solvent-free system, reduces the pollution to environment.
3. catalyst disclosed by the invention has preferable universality for the aliphatic ketone of different structure, taken to obtain difference More selections are provided for the boric acid ester compound of based structures.
Specific implementation mode
The present invention is described further with reference to embodiment:
Embodiment one:Anilino- lithium is catalyzed methyl isopropyl ketone and pinacol borine hydroboration
In the reaction bulb by dehydration and deoxidation processing, the lower tetrahydrofuran solution that 40ul anilino- lithiums are added of argon gas protection (0.05M) (0.2 mol% dosages) is then added 0.1596 mL borines with syringe, is uniformly mixed, then be added with syringe 0.1072 mL methyl isopropyl ketones, mixture are stirred at room temperature, and after reacting 30 min, nuclear-magnetism yield is 99%, is subtracted later Pressure removes a small amount of tetrahydrofuran and excessive borine to get to corresponding pinacol borate.1H NMR (400 MHz, CDCl3) δ 3.94 (p, J = 6.2 Hz, 1H, OCH), 1.66 (dq, J = 13.5, 6.8 Hz, 1H, CH3CH), 1.25 (s, 12H, CH3), 1.14 (d, J = 6.3 Hz, 3H, CH3), 0.91-0.85 (m, 6H, CHCH3). 13C NMR (101 MHz, CDCl3) δ 82.34 (OC), 75.40 (OCH), 34.25 (OCHCH), 24.50 (d, J = 7.4 Hz, CH3), 19.30 (CH3), 18.10 (CH3), 17.74 (CH3)。
Embodiment two:Anilino- lithium is catalyzed 4- heptanone and pinacol borine hydroboration
In the reaction bulb by dehydration and deoxidation processing, the lower tetrahydrofuran solution that 60ul anilino- lithiums are added of argon gas protection (0.05M) (0.3 mol% dosages) is then added 0.1596 mL borines with syringe, is uniformly mixed, then be added with syringe 0.1398 mL4- heptanone, mixture are stirred at room temperature, and after reacting 40 min, nuclear-magnetism yield is 99%, are removed under reduced pressure later few The tetrahydrofuran of amount and excessive borine are to get to corresponding pinacol borate.1H NMR (400 MHz, CDCl3) δ 4.03 (td, J = 8.0, 3.9 Hz, 1H, CH), 1.51 – 1.31 (m, 8H, CH2), 1.24 (s, 12H, CH3), 0.90 (t, J = 7.1 Hz, 6H, CH3). 13C NMR (101 MHz, CDCl3) δ 81.82 (OC), 73.55 (OCH), 38.18 (CH2), 23.97 (CH3), 18.10 (CH3), 13.48 (CH3)。
Anilino- lithium is replaced with to the amido lithium compound of formula I, it is virtually impossible to obtain product, yield is less than 8%.
Present invention firstly discovers that anilino- lithium can be catalyzed the hydroboration of ketone with high catalytic activity, and have Very wide substrate usage range.Cheap catalyst and lower catalyst amount, mild catalytic condition are work Industry application provides possibility.

Claims (10)

1. anilino- lithium is in catalysis ketone and the application in borine hydroboration;The ketone is aliphatic ketone.
2. application according to claim 1, which is characterized in that the hydroboration includes the following steps:
Under anhydrous and oxygen-free environment, under atmosphere of inert gases, borine is added in the reaction bulb by dehydration and deoxidation processing, then adds Enter anilino- lithium, be uniformly mixed, add ketone, hydroboration occurs.
3. application according to claim 1, which is characterized in that the aliphatic ketone is selected from methyl isopropyl ketone, 4- heptanone; The borine is selected from pinacol borine.
4. application according to claim 1, which is characterized in that the dosage of the anilino- lithium is the 0.2- of ketone mole 0.3%, the molar ratio of ketone and borine is 1: 1.1.
5. application according to claim 1, which is characterized in that the temperature of hydroboration is room temperature, and the time is 30-40 points Clock.
6. a kind of preparation method of borate, includes the following steps:
Under anhydrous and oxygen-free environment, in atmosphere of inert gases, borine is added in the reaction bulb by dehydration and deoxidation processing, then adds Enter catalyst aniline base lithium, be uniformly mixed, add ketone, hydroboration occurs, is exposed in air and terminates reaction, obtain boron Acid esters;The ketone is aliphatic ketone.
7. the preparation method of borate according to claim 6, which is characterized in that the aliphatic ketone is selected from isopropyl methyl first Ketone, 4- heptanone.
8. the preparation method of borate according to claim 6, which is characterized in that the borine is selected from pinacol borine.
9. the preparation method of borate according to claim 6, which is characterized in that the dosage of the catalyst is ketone mole 0.2-0.3%, the molar ratio of ketone and borine is 1: 1.1.
10. the preparation method of borate according to claim 6, which is characterized in that the temperature of hydroboration is room temperature, when Between be 30-40 minutes.
CN201810336699.7A 2018-04-16 2018-04-16 Application of the anilino- lithium in catalysis ketone and borine hydroboration Withdrawn CN108558923A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109503318A (en) * 2018-12-24 2019-03-22 苏州大学 A method of alcoholic compound is prepared by the non-catalytic reaction of aliphatic carboxylic acid
WO2019200521A1 (en) * 2018-04-17 2019-10-24 南通纺织丝绸产业技术研究院 Application of anilino lithium in catalyzing hydroboration of carbonyl compound and borane

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106749372A (en) * 2016-12-07 2017-05-31 厦门大学 A kind of preparation method of organic boronic ester compounds
CN107501309A (en) * 2017-09-01 2017-12-22 南京林业大学 A kind of condensate Schiff base rare-earth ytterbium iodide and its preparation method and application

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106749372A (en) * 2016-12-07 2017-05-31 厦门大学 A kind of preparation method of organic boronic ester compounds
CN107501309A (en) * 2017-09-01 2017-12-22 南京林业大学 A kind of condensate Schiff base rare-earth ytterbium iodide and its preparation method and application

Non-Patent Citations (1)

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Title
DEBABRATA MUKHERJEE: "Alkali Metal hydridotriphenylborates [(L)M][HBPh3](M=Li,Na,K):Chemoselective Catalysts for Carbonyl and CO2 Hydroboration", 《J.A.C.S》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019200521A1 (en) * 2018-04-17 2019-10-24 南通纺织丝绸产业技术研究院 Application of anilino lithium in catalyzing hydroboration of carbonyl compound and borane
CN109503318A (en) * 2018-12-24 2019-03-22 苏州大学 A method of alcoholic compound is prepared by the non-catalytic reaction of aliphatic carboxylic acid

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