Structure of 16642-93-6
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CAS No. : | 16642-93-6 |
Formula : | C10H7NO2 |
M.W : | 173.17 |
SMILES Code : | O=C(O)/C=C/C1=CC=CC(C#N)=C1 |
MDL No. : | MFCD00182407 |
InChI Key : | WEYFZKRRQZYAJI-SNAWJCMRSA-N |
Pubchem ID : | 13370798 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
81% | General procedure: 3-Cyanobenzaldehyde (11a) or 4-cyanobenzaldehyde (11b) (15 mmol) and malonic acid (30 mmol) were dissolved in pyridine (30 mL). Piperidine (3.0 mmol) was added and the reaction was heated for 4 h at 100 C. The reaction was cooled to room temperature and 5 M HCl (25 mL) was added slowly. The resulting white precipitate was collected by filtration, washed with water and dried to give (E)-3-cyanocinnamic acid (12a) or (E)-4-cyanocinnamic acid (12b) in yields of 81% and 78%, respectively. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide;palladium on charcoal; In water; | (c) 3-(3-Cyanophenyl)propanoic acid A solution of 3-cyano-cinnamic acid (11.5 g) in water (200 ml) and 2M sodium hydroxide solution (35 ml) was hydrogenated at 60 psi over 10% palladium on charcoal for 1.5 hours. The catalyst was filtered off and the filtrate was acidified with 2M hydrochloric acid to precipitate the product as a white solid, m.p. 103 C. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sulfuric acid;Reflux; | General procedure: According to method I [2a, 3a, 6a, 9a,10a,12a,13a]: 15 mmols ofcinnamic acid were dissolved in 20 ml of dried methanol and 0.5 mlof concentrated sulfuric acid was added. Mixturewas refluxed from7 to 17 h. Next, the solvent was evaporated, residue was extractedwith 40 ml of ethyl acetate and washed with 0.5% NaOH and brine.Organic layer was dried with anhydrous sodium sulfate and solventwas evaporated again. When necessary, product was crystallizedfrom ethanol with addition of active carbon. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
72% | The title compound (68.4 mg, 72%) was prepared as in Example 20 using trans-3-(3-cyano-phenyl)-acrylic acid in place of trans-3-thiophen-3-yl-acrylic acid. 1H NMR (500 MHz, CDCl3): 8.05 (s, 1H), 7.58 (d, J=15.5 Hz, 1H), 7.53-7.48 (m, 3H), 7.40-7.37 (m, 1H), 7.28-7.20 (m, 6H), 6.75-6.73 (m, 1H), 6.20 (d, J=15.5 Hz, 1H), 4.73-4.69 (m, 1H), 4.23-4.13 (m, 2H), 3.45 (s, 2H), 3.37-3.26 (m, 2H), 2.89 (br s, 2H), 2.25 (s, 3H), 2.15-2.10 (m, 2H), 1.88-1.77 (m, 2H), 1.55-1.44 (m, 2H). MS: exact mass calculated for C32H32N4O2, 504.25; m/z found, 505.2 [M+H]+, 527.2 [M+Na]+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
50% | The title compound (61 mg, 50%) was prepared as in Example 52, using trans-3-(3-cyano-phenyl)-acrylic acid in place of trans-3-(4-chloro-phenyl)-acrylic acid. 1H NMR (500 MHz, CDCl3): 8.04 (s, 1H), 7.59 (d, J=15.5 Hz, 1H), 7.53-7.49 (m, 3H), 7.40-7.37 (m, 1H), 7.20-7.19 (m, 1H), 6.78-6.73 (m, 1H), 6.2 (d, J=15.5 Hz, 1H), 4.72 (br s, 1H), 4.22-4.11 (m, 2H), 3.34-3.24 (m, 2H), 2.96 (br s, 1H), 2.30-2.24 (m, 5H), 2.08-1.86 (m, 6H), 1.71-1.44 (m, 10H), 1.07-1.03 (m, 2H). MS: exact mass calculated for C32H38N4O2, 510.30; m/z found, 511.2 [M+H]+, 533.3 [M+Na]+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Step 1 (E)-3-(3-Cyanophenyl)acrylic Acid 11.3 g of (E)-3-(3-cyanophenyl)acrylic acid were synthesised as described for (E)-3-(4-(methanesulfonyloxy)phenyl)acrylic acid, using3-cyanobenzaldehyde (commercially available at Aldrich) instead of methanesulfonic acid 4-formylphenyl ester. 1H-NMR (DMSO-d6) δ 6.70 (d, 1 H); 7.60 (m, 2 H); 7.85 (d, 1 H); 8.05 (d, 1 H); 8.25 (s, 1 H); 12.50 (br, 1 H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Step 2 220 mg of the title compound were synthesised as described for (E)-3-(4-bromophenyl)-1-((S)-2-((pyrrolidin-1-yl)methyl)pyrrolidin-1-yl)propenone, using (E)-3-(3-cyanophenyl)acrylic acid instead of (E)-4-bromocinnamic acid. 1H-NMR (as trifluoroacetic acid salt, CDCl3) δ 1.90 (m, 1 H); 2.00-2.30 (m, 7 H); 3.05-3.20 (m, 2 H); 3.25 (m, 1 H); 3.65 (m, 1 H); 3.70-3.90 (m, 3 H); 4.15 (m, 1 H); 4.50 (m, 1 H); 6.75 (d, 1 H); 7.55 (t, 1 H); 7.65 (d, 1 H); 7.70 (d, 1 H); 7.75 (d, 1 H); 7.85 (s, 1 H). HPLC method A: elution at 7.37 min. MS: calc. for [M+H]+: 310; found:. 310. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Example 48 (General Procedure (A)) 3-[(E)-3-Oxo-3-((S)-2-((piperidin-1-yl)methyl)pyrrolidin-1-yl)propenyl]benzonitrile 370 mg of the title compound were synthesised as described for (E)-3-(4-bromophenyl)-1-((S)-2-((pyrrolidin-1-yl)methyl)pyrrolidin-1-yl)propenone, using (E)-3-(3-cyanophenyl)acrylic acid instead of (E)-4-bromocinnamic acid and 1-(((S)-pyrrolidin-2-yl)methyl)piperidine instead of (S)-2-((pyrrolidin-1-yl)methyl)pyrrolidine. 1H-NMR (CDCl3, 2 sets of signals) δ 1.40 (m, 2 H); 1.55 (m, 4 H); 1.85-2.15 (m, 4 H); 2.15-2.55 (m, 5 H); 2.65 (m, 1 H); 3.60 and 3.75 (both m, together 2 H); 4.15 and 4.40 (both m, together 1 H); 6.75 and 7.05 (both d, together 1 H); 7.50 (t, 1 H); 7.60-7.75 (m, 4 H); 7.85 (d, 1 H). HPLC method B: elution at 3.10 min. MS: calc. for [M+H]+: 324; found: 324. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
4.35 g (99%) | With lithium hydroxide monohydrate; In tetrahydrofuran; | Part A. Preparation of trans-3-cyanocinnamic acid. To a solution of methyl trans-3-cyanocinnamate (4.74 g, 25.3 mmol) in 100 mL of tetrahydrofuran and 50 mL of H2 O at room temperature was added lithium hydroxide monohydrate (2.65 g, 63.2 mmol). The resulting mixture was allowed to stir for 16 h. The tetrahydrofuran was removed in vacuo and the residue was diluted with saturated aqueous NaHCO3 and washed with hexane. The organic layer was discarded. The aqueous layer was acidified and extracted with ethyl acetate. The organics were washed with brine, dried over MgSO4 and concentrated in vacuo to afford 4.35 g (99%) of the title compound. 1 H NMR (CDCl3): δ 8.21 (s, 1H), 8.02 (d, 1H), 7.85 (d, 1H), 7.62 (t, 1H), 7.61 (d, 1H), 6.73 (d, 1H). |
4.35 g (99%) | With lithium hydroxide monohydrate; In tetrahydrofuran; | Part A. Preparation of trans-3-cyanocinnamic acid. To a solution of methyl trans-3-cyanocinnamate from Example 1, Part A, (4.74 g, 25.3 mmol) in 100 mL of tetrahydrofuran and 50 mL of H2 O at room temperature was added lithium hydroxide monohydrate (2.65 g, 63.2 mmol). The resulting mixture was allowed to stir for 16 h. The tetrahydrofuran was removed in vacuo and the residue was diluted with saturated aqueous NaHCO3 and washed with hexane. The organic layer was discarded. The aqueous layer was acidified and extracted with ethyl acetate. The organics were washed with brine, dried over MgSO4 and concentrated in vacuo to afford 4.35 g (99%) of the title compound. 1 H NMR (CDCl3): δ 8.21 (s, 1H), 8.02 (d, 1H), 7.85 (d, 1H), 7.62 (t, 1H), 7.61 (d, 1H), 6.73 (d, 1H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1.43 g (93%) | With hydrogenchloride; sodium borohydrid; triethylamine; In tetrahydrofuran; water; | Part B. Preparation of trans-3-cyanocinnamyl alcohol. To a solution of trans-<strong>[16642-93-6]3-cyanocinnamic acid</strong> (1.66 g, 9.6 mmol) in 100 mL of tetrahydrofuran at -15 C. was added triethylamine (1.3 mL, 9.6 mmol) and isobutylchloroformate (1.3 mL, 9.6 mmol). The mixture was stirred for 15 minutes and then was filtered into another flask and cooled to -15 C. Sodium borohydride (0.73 g, 19.2 mmol) was added in 2 mL of H2 O and the mixture was allowed to stir at -15 C. for 20 minutes and then at room temperature for 1 h. The reaction was quenched with 10% aqueous HCl and the solvent was removed in vacuo. The residue was diluted with ethyl acetate, washed with brine, dried over MgSO4 and concentrated in vacuo to afford 1.43 g (93%) of the title compound. 1 H NMR (CDCl3): δ 7.59 (s, 1H), 7.57 (d, 1H), 7.49 (d, 1H), 7.40 (t, 1H), 6.60 (d, 1H), 6.40 (dt, 1H), 4.35 (m, 2H), 2.23 (broad s, 1H). |
1.43 g (93%) | With hydrogenchloride; sodium borohydrid; triethylamine; In tetrahydrofuran; water; | Part B. Preparation of trans-3-cyanocinnamyl alcohol. To a solution of trans-<strong>[16642-93-6]3-cyanocinnamic acid</strong> (1.66 g, 9.6 mmol) in 100 mL of tetrahydrofuran at -15 C was added triethylamine (1.3 mL, 9.6 mmol) and isobutylchloroformate (1.3 mL, 9.6 mmol). The mixture was stirred for 15 minutes and then was filtered into another flask and cooled to -15 C. Sodium borohydride (0.73 g, 19.2 mmol) was added in 2 mL of H2O and the mixture was allowed to stir at -15 C for 20 minutes and then at room temperature for 1 h. The reaction was quenched with 10% aqueous HCl and the solvent was removed in vacuo. The residue was diluted with ethyl acetate, washed with brine, dried over MgSO4 and concentrated in vacuo to afford 1.43 g (93%) of the title compound. 1H NMR (CDCl3): δ 7.59 (s, 1H), 7.57 (d, 1H), 7.49 (d, 1H), 7.40 (t, 1H), 6.60 (d, 1H), 6.40 (dt, 1H), 4.35 (m, 2H), 2.23 (broad s, 1H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; potassium carbonate;palladium; In water; | To 200 ml of a solution of 20.0 g potassium carbonate in 250 ml water, 15 g of <strong>[16642-93-6]3-cyanocinnamic acid</strong> was added; the resulting mixture was heated until all the acid was in solution. The solution was cooled and filtered and rinsed with water to 250 ml total volume. Then 0.95 g of 10% palladium on carbon was added and the solution was hydrogenated at 8.5 psi for two hours. The reaction mixture was filtered, and then acidified to a pH of about 1 by the dropwise addition of concentrated hydrochloric acid, being careful to avoid too much foaming. The mixture was chilled in an ice bath and filtered to collect the precipitated product acid. The precipitate was rinsed several times with cold water and dried overnight, to give 13 g of the above-identified product as a solid, melting point 95 C. |
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