| Identification | Back Directory | [Name]
(R,E)-5-([1,1'-biphenyl]-4-yl)-4-((tert-butoxycarbonyl)aMino)-2-Methylpent-2-enoic acid | [CAS]
1012341-48-8 | [Synonyms]
E)-5-([1
(R,E)-5-([1,1'-BiphenyL
)-4-((tert-butoxycarbonyL
LCZ696(valsartan + sacubitril) impurity 30
(R,E)-5-(biphenyl-4-yl)-4-(tert-butoxycarbonylamino)
5-Biphenyl-4-yl-4-tert-butoxycarbonylamino-2-methyl-pent-2-enoic acid
1'-biphenyl]-4-yl)-4-((tert-butoxycarbonyl)aMino)-2-Methylpent-2-enoic acid
(R,E)-5-(biphenyl-4-yl)-4-(tert-butoxycarbonylamino)-2-methylpent-2-enoic acid
(R,E)-5-([1,1'-biphenyl]-4-yl)-4-((tert-butoxycarbonyl)aMino)-2-Methylpent-2-enoic acid
(2E,4R)-5-{[1,1'-biphenyl]-4-yl}-4-{[(tert-butoxy)carbonyl]amino}-2-methylpent-2-enoic acid
(E,4r)-2-methyl-4-[(2-methylpropan-2-yl)oxycarbonylamino]-5-(4-phenylphenyl)pent-2-enoic acid
(R, E) -5-([1,1'-Biphenyl] -4-yl) -4-((tert-butoxycarbonyl) amino) -2-methyl-2-pentenoic acid
(2E,4R)-5-[1,1'-biphenyl]-4-yl-4-[[(1,1-dimethylethoxy)carbonyl]amino]-2-methyl-2-Pentenoic acid
2-Pentenoic acid, 5-[1,1'-biphenyl]-4-yl-4-[[(1,1-dimethylethoxy)carbonyl]amino]-2-methyl-, (2E,4R)-
(2E,4R)-5-[1,1'-Biphenyl]-4-yl-4-[[(1,1-dimethylethoxy)carbonyl]amino]-2-methyl-2-pentenoic acid AHU83
(R,E)-5-([1,1'-Biphenyl]-4-yl)-4-((tert-butoxycarbonyl)amino)-2-methylpent-2-enoic acid (LCZ696 Impurity)
LCZ696 intermediates，(R,E)-5-([1,1'-biphenyl]-4-yl)-4-((tert- butoxycarbonyl)aMino)-2-Methylpent- 2-enoic acid
(R,E)-5-([1,1'-biphenyl]-4-yl)-4-((tert-butoxycarbonyl)aMino)-2-Methylpent-2-enoic acid###1012341-48-8 enantioMer | [EINECS(EC#)]
695-654-2 | [Molecular Formula]
C23H27NO4 | [MDL Number]
MFCD28386950 | [MOL File]
1012341-48-8.mol | [Molecular Weight]
381.465 |
| Chemical Properties | Back Directory | [Melting point ]
188 - 191°C | [Boiling point ]
595.6±50.0 °C(Predicted) | [density ]
1.132±0.06 g/cm3(Predicted) | [vapor pressure ]
8.4-839.931Pa at 20℃ | [storage temp. ]
Sealed in dry,Room Temperature | [solubility ]
DMSO (Slightly), Methanol (Slightly) | [form ]
Solid | [pka]
4.67±0.19(Predicted) | [color ]
White to Off-White | [InChI]
InChI=1S/C23H27NO4/c1-16(21(25)26)14-20(24-22(27)28-23(2,3)4)15-17-10-12-19(13-11-17)18-8-6-5-7-9-18/h5-14,20H,15H2,1-4H3,(H,24,27)(H,25,26)/b16-14+/t20-/m0/s1 | [InChIKey]
JXTNUXJSXXIIFE-VISDOYDDSA-N | [SMILES]
C(O)(=O)/C(/C)=C/[C@H](NC(OC(C)(C)C)=O)CC1=CC=C(C2=CC=CC=C2)C=C1 | [LogP]
2.2-3.6 at 25℃ and pH2.5-7 |
| Hazard Information | Back Directory | [Uses]
(R,E)-5-([1,1-Biphenyl]-4-yl)-4-((tert-butoxycarbonyl)aMino)-2-methylpent-2-enoic Acid is used in preparation of sacubitril intermediate using Nickel Salt catalyst. | [Synthesis]
The general procedure for the synthesis of (R,E)-5-([1,1'-biphenyl]-4-yl)-4-((tert-butoxycarbonyl)amino)-2-methyl-2-pentenoic acid from ethyl (4R)-5-([1,1'-biphenyl]-4-yl)-4-((tert-butoxycarbonyl)amino)-2-methyl-2-pentenoic acid was as follows:
Step 1: 800 g of 95% ethanol and 400 g of pure water were mixed, compound I (1.3 mol) and lithium hydroxide (0.1833 mol) were added, and the reaction was held at reflux for 1 hour at 80 °C. After completion of the reaction, it was cooled to room temperature, activated carbon was added, heated to 42 °C and then continued to raise the temperature to 80 °C reflux. Incubate at room temperature for 2 hours.
Step 2: The reaction mixture was thermally filtered and aqueous citric acid was added to the filtrate to terminate the reaction. Subsequently, the mixture was heated at reflux at 80°C for 1 hour and cooled to room temperature to crystallize. The crystals were collected by filtration and dried to give 55.4 g of dry Compound II in 79.05% molar yield and 99.20% purity. | [References]
[1] Patent: EP1903027, 2008, A1. Location in patent: Page/Page column 17
[2] Patent: CN106431993, 2017, A. Location in patent: Paragraph 0039; 0045; 0051; 0057
[3] Patent: CN106631903, 2017, A. Location in patent: Paragraph 0031; 0032; 0033
[4] Patent: CN106946742, 2017, A. Location in patent: Paragraph 0011 |
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