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CAS No. : | 222978-02-1 | MDL No. : | MFCD08236861 |
Formula : | C8H6FNO | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | WLQHJQUGYACADR-UHFFFAOYSA-N |
M.W : | 151.14 | Pubchem ID : | 11829631 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P280-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302 | Packing Group: | N/A |
GHS Pictogram: |
* 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 |
---|---|---|
In water; N,N-dimethyl-formamide; | Step C Preparation of 2-fluoro-4-hydroxymethylbenzonitrile 4-Bromo-3-fluorobenzyl alcohol (20 g, 0.097 mol) was dissolved in DMF (100 mL) and then placed under high vacuum for 15 min. The solution was then purged with Ar for 15 min. While purging continued, zinc cyanide (8 g, 0.068 mol) and the catalyst, Pd[(PPh3)]4, (5.63 g, 0.0049 mol) were added. The reaction mixture was heated at 95 C. under Ar for 18 h, then cooled to ambient temperature and added to H2O. The mixture was extracted with EtOAc, then washed with 1M HCl, H2O, brine, and dried (Na2SO4). Filtration and concentration to dryness gave the title compound as a white solid after chromatography (silica gel, hexane: EtOAc, 6.5:3.5. 1H NMR (CDCl3) delta 7.61 (t, 1H, J=8 Hz), 7.23-7.29 (m, 2H), 4.80 (d, 2H, J=6 Hz), 1.93 (t, 1H, J=6 Hz). | |
In water; N,N-dimethyl-formamide; | Step C Preparation of 2-fluoro-4-hydroxymethylbenzonitrile 4-Bromo-3-fluorobenzyl alcohol (20 g, 0.097 mol) was dissolved in DMF (100 mL) then placed under high vacuum for 15 min. The solution was then purged with Ar for 15 min. While purging continued, zinc cyanide (8 g, 0.068 mol) and the catalyst, Pd[(PPh3)]4, (5.63 g, 0.0049 mol) were added. The reaction mixture was heated at 95 C. under Ar for 18 h, then cooled to ambient temperature and added to H2O. The mixture was extracted with EtOAc, then washed with 1M HCl, H2O, brine, and dried (Na2SO4). Filtration and concentration to dryness gave the title compound as a white solid after chromatography (silica gel, hexane: EtOAc, 6.5:3.5). 1H NMR (CDCl3) delta7.61 (t, 1H, J=8 Hz), 7.23-7.29 (m, 2H), 4.80 (d, 2H, J=6 Hz), 1.93 (t, 1H, J=6 Hz). | |
In water; N,N-dimethyl-formamide; | Step C: Preparation of 2-fluoro-4-hydroxymethylbenzonitrile 4-Bromo-3-fluorobenzyl alcohol (20 g, 0.097 mol), prepared as described in Step B, was dissolved in DMF (100 mL) then placed under high vacuum for 15 min. The solution was then purged with Ar for 15 min. While purging continued, zinc cyanide (8 g, 0.068 mol) and the catalyst, Pd[(PPh3)]4, (5.63 g, 0.0049 mol) were added. The reaction mixture was heated at 95 C. under Ar for 18 h, then cooled to ambient temperature and added to H2O. The mixture was extracted with EtOAc, then washed with 1M HCl, H2O, brine, and dried (Na2SO4). Filtration and concentration to dryness gave the title compound as a white solid after chromatography (silica gel, hexane: EtOAc, 6.5:3.5). 1H NMR (CDCl3) delta7.61 (t, 1H, J=8 Hz), 7.23-7.29 (m, 2H), 4.80 (d, 2H, J=6 Hz), 1.93 (t, 1H, J=6 Hz). |
In water; N,N-dimethyl-formamide; | Step C Preparation of 2-Fluoro-4-hydroxymethylbenzonitrile 4-Bromo-3-fluorobenzyl alcohol (20 g, 0.097 mol) was dissolved in DMF (100 mL) then placed under high vacuum for 15 min. The solution was then purged with Ar for 15 min. While purging continued, zinc cyanide (8 g, 0.068 mol) and the catalyst, Pd[(PPh3)]4, (5.63 g, 0.0049 mol) were added. The reaction mixture was heated at 95 C. under Ar for 18 h, then cooled to ambient temperature and added to H2O. The mixture was extracted with EtOAc, then washed with 1M HCl, H2O, brine, and dried (Na2SO4). Filtration and concentration to dryness gave the title compound as a white solid after chromatography (silica gel, hexane: EtOAc, 6.5:3.5). 1H NMR (CDCl3) delta 7.61 (t, lH, J=8 Hz), 7.23-7.29 (m, 2H), 4.80 (d, 2H, J=6Hz), 1.93 (t, 1H, J=6 Hz). | |
In water; N,N-dimethyl-formamide; | Step C: Preparation of 2-fluoro-4-hydroxymethylbenzonitrile 4-Bromo-3-fluorobenzyl alcohol(20 g, 0.097 mol) was dissolved in DMF (100 mL) and then placed under high vacuum for 15 min. The solution was then purged with Ar for 15 min. While purging continued, zinc cyanide (8 g, 0.068 mol) and the catalyst, Pd[(PPh3)]4, (5.63 g, 0.0049 mol) were added. The reaction mixture was heated at 95 C. under Ar for 18 h, then cooled to ambient temperature and added to H2O. The mixture was extracted with EtOAc, then washed with 1 M HCl, H2O, brine, and dried (Na2SO4). Filtration and concentration to dryness gave the title compound as a white solid after chromatography (silica gel, hexane: EtOAc, 6.5:3.5). 1H NMR (CDCl3) d 7.61 (t, 1H, J=8 Hz), 7.23-7.29 (m, 2H), 4.80 (d, 2H, J=6 Hz), 1.93 (t, 1H, J=6 Hz). | |
In water; N,N-dimethyl-formamide; | Step C Preparation of 2-Fluoro-4-hydroxymethylbenzonitrile 4-Bromo-3-fluorobenzyl alcohol (20 g, 0.097 mol) was dissolved in DMF (100 mL) and then placed under high vacuum for 15 min. The solution was then purged with Ar for 15 min. While purging continued, zinc cyanide (8 g, 0.068 mol) and the catalyst, Pd[(PPh3)]4, (5.63 g, 0.0049 mol) were added. The reaction mixture was heated at 95 C. under Ar for 18 h, then cooled to ambient temperature and added to H2O. The mixture was extracted with EtOAc, then washed with 1M HCl, H2O, brine, and dried (Na2SO4). Filtration and concentration to dryness gave the title compound as a white solid after chromatography (silica gel, hexane: EtOAc, 6.5:3.5. 1H NMR (CDCl3) d 7.61 (t, 1H, J=8 Hz), 7.23-7.29 (m, 2H), 4.80 (d, 2H, J=6 Hz), 1.93 (t, 1H, J=6 Hz). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Pd(PPh3)4; In N,N-dimethyl-formamide; | Step J Preparation of 4-Cyano-3-fluorobenzyl Alcohol To a degassed solution of the product from Step I (11.4 g, 55.6 mmol) in 100 mL of DMF was added Zn(CN)2 (3.92 g, 33.4 mmol) and Pd(PPh3)4 (5.1 g, 4.45 mmol). The reaction was stirred at 90 C. overnight, cooled to room temperature, and concentrated in vacuo. Purification of this material by silica gel chromatography (50% EtOAc/hexane) provided the titled product as a light yellow solid. |
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