CN100389118C - C2-symmetrical bis ruthenium Diphosphine Ligand only with surface chirality - Google Patents
C2-symmetrical bis ruthenium Diphosphine Ligand only with surface chirality Download PDFInfo
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Abstract
The present invention relates to a C2-symmetrical ruthenocene diphosphine ligand with only planar chiralty, which belongs to the technical field of chemical industry. The ligand is a C2-symmetric diphosphine ligand with only planar chiralty. The ligand can be applied in various metal catalyzed asymmetrical reactions such as asymmetrical cyclopropane reactions, allyl substitution reactions, the hydrogenation reactions of functionalized or non-functionalized alkene and imine compounds, etc. The ligand has the advantages of high reactivity and high stereo selectivity. The structural formula of the ligand is disclosed in the drawing, wherein the R is R=-Me or-Et.
Description
Technical field
The present invention relates to a kind of part of chemical technology field, specifically is a kind of C
2-symmetric two luxuriant nail biphosphine ligands with face chirality.
Technical background
The rapid rise of chiral drug industry mainly has benefited from the very big development that method of asymmetric synthesis is learned research, and conversely, chiral drug industry has promoted the research that method of asymmetric synthesis is learned again.The asymmetry catalysis organic synthesis is that obtaining chipal compounds the most effective also is one of best method.In the asymmetry catalysis organic synthesis, the key that can reach the high enantioselectivity of high reaction activity is the structure of chiral phosphine ligand.Therefore the exploitation of chiral phosphine ligand is the priority research areas that academia and industrial community are paid close attention to always.
1996, Zhang Wanbin and Ikeda merit group synthesized first and have only had face chirality C
2-symmetrical ferrocene P, the P-part, and successfully it is applied in the allyl substitution reaction, obtained optical yield up to 94%e.e.
As C
2-symmetry axis chiral ligand, in asymmetric catalysis, the size of the interfacial angle that chiral ligand and metal-complexing form influences the key factor of asymmetric induction in the catalyzed reaction often.The small conversion of this angle may greatly influence the stereoselectivity of asymmetric catalysis.Can infer, exactly can be for the part of ferrocene class by the conversion metallocene, regulating the distance of two cyclopentadiene interannulars, thereby formed interfacial angle (torsional angle) when changing part and metal-complexing finally changes the chirality field of catalyzed reaction.The present invention is under the guidance of this notion, and design has synthesized the novel C that only has the face chirality
2-symmetric two luxuriant nail biphosphine ligands are by investigating the influence of the right title catalytic effect of interfacial angle in the face chirality, to filter out the new catalyst with high catalytic activity and wide universality.
Find through literature search, do not find identical with theme of the present invention or similar bibliographical information so far as yet prior art.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of C is provided
2-symmetric the bis ruthenium Diphosphine Ligand with face chirality makes it can filter out the face chirality ligand with better asymmetry catalysis effect.
The present invention is achieved by the following technical solutions, C of the present invention
2-symmetric bis ruthenium Diphosphine Ligand with face chirality, its structural formula is as follows:
Wherein R is-Me, or-Et.
In the part of the present invention, the R on the diphenylphosphine ortho position is alkoxy carbonyl or alkoxyl group methylene radical.Alkyl in the alkoxyl group is methyl or ethyl.
Part face chirality of the present invention is S, the S configuration.
C of the present invention
2-symmetric the bis ruthenium Diphosphine Ligand with face chirality is to make by the following method: with C
2-symmetric (S)-(S)-I; 1 ' two (diphenylphosphino)-2; 2 '-two [(S)-4-Yi Bing oxazolin base] ruthenocene is a raw material; hydrolysis is amino with oxazoline open loop and protection under the trifluoroacetic acid effect, and being undertaken after transesterify or the reduction again by corresponding sodium alkoxide then, alkylation can obtain target compound.
Institute of the present invention synthetic part be only have a face chirality and C
2-symmetrical biphosphine ligand.Such part can be applicable in the asymmetric reaction of various metal catalytics, as asymmetric cyclopropanization reaction, allyl substitution reaction, functionalized or the alkene of non-functionalization and the hydrogenation of imine compound etc., have very high reactive behavior and stereoselectivity, have application promise in clinical practice.
Embodiment
Embodiment one:
1, the preparation of carboxylic acid amide esters (2)
(S)-(S)-1,1 '-two (diphenylphosphino)-2,2 '-two [(S)-and 4-Yi Bing oxazolin base] (1.65g 2mmol) is dissolved in tetrahydrofuran (THF) (40mL) to ruthenocene, add successively then entry (2mL), trifluoroacetic acid (3.8mL, 49.4mmol), anhydrous sodium sulphate Na
2SO
4(18.8g), the suspension stirred overnight at room temperature is filtered, steaming desolventizes, resistates be dissolved in methylene dichloride (40mL) add successively then pyridine (7.2mL, 89mmol), acetic anhydride (12.0mL, 76.4mmol), stirred overnight at room temperature, mixture is with methylene dichloride (80mL) dilution, respectively with dilute hydrochloric acid (10%), water, saturated common salt water washing, anhydrous magnesium sulfate drying, steaming desolventize target product 1.65g, y=82.8%.
1H?NMR(400MHz，CDCl
3)：δ7.34-7.14(m，20H，ArH)，6.59-6.58(brs，2H，NH)，5.39(brs，2H，RcH)，4.83(brs，2H，RcH)，4.39-4.34(dd，J＝4Hz，15.6，2H，OCH)，4.05-4.01(dd，J＝3.6Hz，11.2Hz，2H，OCH)，3.90(m，2H，NCH)，3.82(brs，2H，FCH)，2.18-2.17(m，2H，Me
2CH)，2.16(s，6H，COCH
3)，1.02-1.00(d，J＝8.8Hz，6H，CH
3)，0.99-0.97(d，J＝8.8Hz，6H，CH
3).
2, ' two (diphenylphosphino)-2, (S)-(S)-1,1, the preparation of 2 '-two (methoxycarbonyl) two luxuriant nails (1)
Carboxylic acid amide esters (0.30g 0.32mmol) is dissolved in tetrahydrofuran (THF) (8mL), then under room temperature to wherein add by sodium (0.3g, 40equiv.) and the sodium methoxide solution that makes of methyl alcohol (10mL), stirred overnight at room temperature.Transferring pH with the methanol solution of 25% (v/v) acetic acid is neutrality, boil off solvent, dissolve with methylene dichloride (20mL), after water, saturated common salt water washing, anhydrous magnesium sulfate drying, except that after desolvating, resistates column chromatography (ethyl acetate/petroleum ether=1: 6), get light green solid 0.17g, y=71.5%
1H?NMR(400MHz，CDCl
3)：δ7.34-7.17(m，20H，ArH)，5.42-5.41(brs，2H，FcH)，4.70-4.67(t，J＝5.2Hz，2H，FcH)，3.87(brs，2H，FcH)，3.70(s，6H，OCH
3).
Embodiment two:
1, the preparation of carboxylic acid amide esters (2)
(S)-(S)-1,1 '-two (diphenylphosphino)-2,2 '-two [(S)-and 4-Yi Bing oxazolin base] (1.65g 2mmol) is dissolved in tetrahydrofuran (THF) (40mL) to ruthenocene, add successively then entry (2mL), trifluoroacetic acid (3.8mL, 49.4mmol), anhydrous sodium sulphate Na
2SO
4(18.8g), the suspension stirred overnight at room temperature is filtered, steaming desolventizes, resistates be dissolved in methylene dichloride (40mL) add successively then pyridine (7.2mL, 89mmol), acetic anhydride (12.0mL, 76.4mmol), stirred overnight at room temperature, mixture is with methylene dichloride (80mL) dilution, respectively with dilute hydrochloric acid (10%), water, saturated common salt water washing, anhydrous magnesium sulfate drying, steaming desolventize target product 1.65g, y=82.8%.
1H?NMR(400MHz，CDCl
3)：δ7.34-7.14(m，20H，ArH)，6.59-6.58(brs，2H，NH)，5.39(brs，2H，RcH)，4.83(brs，2H，RcH)，4.39-4.34(dd，J＝4Hz，15.6，2H，OCH)，4.05-4.01(dd，J＝3.6Hz，11.2Hz，2H，OCH)，3.90(m，2H，NCH)，3.82(brs，2H，FCH)，2.18-2.17(m，2H，Me
2CH)，2.16(s，6H，COCH
3)，1.02-1.00(d，J＝8.8Hz，6H，CH
3)，0.99-0.97(d，J＝8.8Hz，6H，CH
3).
2, (S)-(S)-I, 1 ' two (diphenylphosphino)-2, the preparation of 2 '-two (ethoxy carbonyl) ruthenocene
Carboxylic acid amide esters (0.335g 0.36mmol) is dissolved in tetrahydrofuran (THF) (20mL), then under room temperature to wherein add by sodium (0.6g, 70equiv.) and the alcohol sodium solution that makes of ethanol (40mL), stirred overnight at room temperature.Transferring pH with the methanol solution of 25% (v/v) acetic acid is neutrality, boil off solvent, dissolve with methylene dichloride (20mL), after water, saturated common salt water washing, anhydrous magnesium sulfate drying, except that after desolvating, resistates column chromatography (ethyl acetate/petroleum ether=1: 6), get light green solid 0.19g, y=73.7%
1H?NMR(400MHz，CDCl
3)：δ7.30-7.16(m，20H，ArH)，5.42-5.41(brs，2H，FcH)，4.78-4.79(t，J＝2.4Hz，2H，FcH)，4.24-4.08(m，4H，OCH
2)，3.84-3.83(brs，2H，FcH)，.1.13-1.10(s，6H，CH
3).
Embodiment three:
1, the preparation of carboxylic acid amide esters (2)
(S)-(S)-1,1 '-two (diphenylphosphino)-2,2 '-two [(S)-and 4-Yi Bing oxazolin base] (1.65g 2mmol) is dissolved in tetrahydrofuran (THF) (40mL) to ruthenocene, add successively then entry (2mL), trifluoroacetic acid (3.8mL, 49.4mmol), anhydrous sodium sulphate Na
2SO
4(18.8g), the suspension stirred overnight at room temperature is filtered, steaming desolventizes, resistates be dissolved in methylene dichloride (40mL) add successively then pyridine (7.2mL, 89mmol), acetic anhydride (12.0mL, 76.4mmol), stirred overnight at room temperature, mixture is with methylene dichloride (80mL) dilution, respectively with dilute hydrochloric acid (10%), water, saturated common salt water washing, anhydrous magnesium sulfate drying, steaming desolventize target product 1.65g, y=82.8%.
1H?NMR(400MHz，CDCl
3)：δ7.34-7.14(m，20H，ArH)，6.59-6.58(brs，2H，NH)，5.39(brs，2H，RcH)，4.83(brs，2H，RcH)，4.39-4.34(dd，J＝4Hz，15.6，2H，OCH)，4.05-4.01(dd，J＝3.6Hz，11.2Hz，2H，OCH)，3.90(m，2H，NCH)，3.82(brs，2H，FCH)，2.18-2.17(m，2H，Me
2CH)，2.16(s，6H，COCH
3)，1.02-1.00(d，J＝8.8Hz，6H，CH
3)，0.99-0.97(d，J＝8.8Hz，6H，CH
3).
2, (S)-(S)-I, 1 ' two (diphenylphosphino)-2, the preparation of 2 '-dihydroxymethyl ruthenocene
To the tetrahydrochysene lithium aluminium (46mg that is suspended in tetrahydrofuran (THF) (8mL), 6equiv.) add carboxylic acid amide esters (188mg in the system, 0.2mmol) tetrahydrofuran (THF) (2mL) solution, stir 2-3h under the room temperature, carefully with saturated metabisulfite solution quencher, dilute with the long-pending ethyl ester ethyl ester of triploid then under the ice-water bath, system is successively with 10% hydrochloric acid soln, saturated sodium bicarbonate solution, saturated common salt water washing, anhydrous sodium sulfate drying, the resistates column chromatography behind the evaporate to dryness gets product glycol 110mg, y=89.5%.
1H?NMR(400MHz，CDCl
3)：δ7.43-7.22(m，20H，Ar-H)，4.96(b，2H，RcH)，4.48(d，J＝12.8Hz，2H，-OCH
2)，4.23(b，2H，RcH)，4.05(d，J＝12.8Hz，-OCH
2)，3.92(b，2H，RcH)，3.34(b，2H，-OH).
3, (S)-(S)-I, 1 ' two (diphenylphosphino)-2, the preparation of 2 '-two (methoxymethyl) ruthenocene
Glycol (14mg, 0.022mmol) be dissolved in add among the DMF (5mL) sodium hydroxide (5mg, 6equiv.) and Me
2SO
4(8.4 μ L) reacts 8h between 20-50 ℃, system is diluted with methylene dichloride, and with washing, saturated common salt washing, anhydrous magnesium sulfate drying boils off solvent respectively, and the resistates column chromatography gets target compound 12.4mg, y=82%.
1H?NMR(400MHz，CDCl
3)：δ7.34-7.22(m，20H，Ar-H)，4.83(b，2H，RcH)，4.33-4.29(dd，J＝2.8，11.2Hz，2H，-OCH
2)，4.25(b，2H，RcH)，4.05(d，J＝11.2Hz，-OCH
2)，3.83(b，2H，RcH)，3.17(s，6H，-OCH
3).
Embodiment four:
1, the preparation of carboxylic acid amide esters (2)
(S)-(S)-1,1 '-two (diphenylphosphino)-2,2 '-two [(S)-and 4-Yi Bing oxazolin base] (1.65g 2mmol) is dissolved in tetrahydrofuran (THF) (40mL) to ruthenocene, add successively then entry (2mL), trifluoroacetic acid (3.8mL, 49.4mmol), anhydrous sodium sulphate Na
2SO
4(18.8g), the suspension stirred overnight at room temperature is filtered, steaming desolventizes, resistates be dissolved in methylene dichloride (40mL) add successively then pyridine (7.2mL, 89mmol), acetic anhydride (12.0mL, 76.4mmol), stirred overnight at room temperature, mixture is with methylene dichloride (80mL) dilution, respectively with dilute hydrochloric acid (10%), water, saturated common salt water washing, anhydrous magnesium sulfate drying, steaming desolventize target product 1.65g, y=82.8%.
1H?NMR(400MHz，CDCl
3)：7.34-7.14(m，20H，ArH)，6.59-6.58(brs，2H，NH)，5.39(brs，2H，RcH)，4.83(brs，2H，RcH)，4.39-4.34(dd，J＝4Hz，15.6，2H，OCH)，4.05-4.01(dd，J＝3.6Hz，11.2Hz，2H，OCH)，3.90(m，2H，NCH)，3.82(brs，2H，FCH)，2.18-2.17(m，2H，Me
2CH)，2.16(s，6H，COCH
3)，1.02-1.00(d，J＝8.8Hz，6H，CH
3)，0.99-0.97(d，J＝8.8Hz，6H，CH
3).
2, (S)-(S)-I, 1 ' two (diphenylphosphino)-2, the preparation of 2 '-dihydroxymethyl ruthenocene
To the tetrahydrochysene lithium aluminium (46mg that is suspended in tetrahydrofuran (THF) (8mL), 6equiv.) add carboxylic acid amide esters (188mg in the system, 0.2mmol) tetrahydrofuran (THF) (2mL) solution, stir 2-3h under the room temperature, carefully with saturated metabisulfite solution quencher, dilute with the long-pending ethyl ester ethyl ester of triploid then under the ice-water bath, system is successively with 10% hydrochloric acid soln, saturated sodium bicarbonate solution, saturated common salt water washing, anhydrous sodium sulfate drying, the resistates column chromatography behind the evaporate to dryness gets product glycol 110mg, y=89.5%.
1H?NMR(400MHz，CDCl
3)：δ7.43-7.22(m，20H，Ar-H)，4.96(b，2H，RcH)，4.48(d，J＝12.8Hz，2H，-OCH
2)，4.23(b，2H，RcH)，4.05(d，J＝12.8Hz，-OCH
2)，3.92(b，2H，RcH)，3.34(b，2H，-OH).
3, (S)-(S)-I, 1 ' two (diphenylphosphino)-2, the preparation of 2 '-two (ethoxyl methyl) ruthenocene
Glycol (33mg, 0.05mmol) be dissolved in add among the DMF (10mL) sodium hydroxide (12mg, 6equiv.) and Et
2SO
4(14.2 μ L 3equiv.), react 8h between 20-50 ℃, system is diluted with methylene dichloride, and with washing, saturated common salt washing, anhydrous magnesium sulfate drying boils off solvent respectively, and the resistates column chromatography gets target compound 27.9mg, y=78%.
1H?NMR(400MHz，CDCl
3)：δ7.51-7.19(m，20H，Ar-H)，4.83(b，2H，RcH)，4.35-4.32(dd，J＝11.6，2Hz，2H，RcCH
2)，4.26(b，2H，RcH)，4.10(d，J＝11.6Hz，2H，RcH)，3.82(b，2H，RcH)，3.40-3.24(m，4H，OCH
2)，0.89(t，J＝6.8，6H，-CH
3).
Claims (1)
1. C
2-symmetric the bis ruthenium Diphosphine Ligand with face chirality is characterized in that its structural formula is as follows:
Wherein R is-Me, or-Et.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100274098A CN100389118C (en) | 2006-06-08 | 2006-06-08 | C2-symmetrical bis ruthenium Diphosphine Ligand only with surface chirality |
| PCT/CN2007/001824 WO2007140717A1 (en) | 2006-06-08 | 2007-06-08 | C2-symmetrical ruthenocene diphosphine ligands only with surface chirality and their manufacture. |
| US12/303,767 US8507705B2 (en) | 2006-06-08 | 2007-06-08 | C2-symmetrical ruthenocene diphosphine ligands only with surface chirality and their manufacture |
| JP2009513539A JP5208928B2 (en) | 2006-06-08 | 2007-06-08 | C2-ruthenocene bisphosphine ligand having only symmetric planar chirality and its synthesis method |
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|---|---|---|---|
| CNB2006100274098A CN100389118C (en) | 2006-06-08 | 2006-06-08 | C2-symmetrical bis ruthenium Diphosphine Ligand only with surface chirality |
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| JP5208928B2 (en) * | 2006-06-08 | 2013-06-12 | 上海交通大学 | C2-ruthenocene bisphosphine ligand having only symmetric planar chirality and its synthesis method |
| CN101143818A (en) * | 2007-09-27 | 2008-03-19 | 上海交通大学 | Enantioselectivity reversion method for allyl substitution reaction catalyzed by Pd |
| CN102951981A (en) * | 2011-08-22 | 2013-03-06 | 上海交通大学 | Asymmetric hydrogenation method for ketone compound |
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Non-Patent Citations (6)
| Title |
|---|
| Highly diasteroslective....... Wanbin Zhang et al.Tetrahedron:Asymmetry,Vol.7 No.2. 1996 |
| Highly diasteroslective....... Wanbin Zhang et al.Tetrahedron:Asymmetry,Vol.7 No.2. 1996 * |
| Lithiation and Phosphorylation. Jaiwook Park et al.Tetrahedron Letters,Vol.36 No.40. 1995 |
| Lithiation and Phosphorylation. Jaiwook Park et al.Tetrahedron Letters,Vol.36 No.40. 1995 * |
| Synthesis of novel....... C.Bolm et al.Journal of Organometallic Chemistry,Vol.624 . 2001 |
| Synthesis of novel....... C.Bolm et al.Journal of Organometallic Chemistry,Vol.624 . 2001 * |
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