Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 796600-15-2, name is 2-Chloro-4-fluoro-3-methylbenzonitrile, A new synthetic method of this compound is introduced below., Recommanded Product: 2-Chloro-4-fluoro-3-methylbenzonitrile
Example 22-Chloro-4-[[(lS,2R)-2-hydroxy-2-methyl-cyclopentyl]amino]-3-methyl-benzonitrilebsoluteIn a sealed pressure vessel, a mixture of 2-chloro-4-fluoro-3-methyl-benzonitrile (1.2 g, 7.08 mmol), (lR,2S)-2-amino-l-methyl-cyclopentanol (1.63 g, 14.2 mmol) and lithium carbonate (1.10 g, 14.9 mmol) in DMSO (14.4 mL) and water (1.4 mL) is heated at 130 C overnight. After allowing the reaction to cool to room temperature, the mixture is diluted with EtOAc and washed twice with 1 N hydrochloric acid. The organic phase isconcentrated under reduced pressure and purified using radial chromatography eluting with EtOAc/hexanes (20 to 50% EtOAc/hexanes gradient). The resulting residue is repurified using radial chromatography with 1% methanol/dichloromethane. The isolated product is recrystallized with ether/hexanes, collected by filtration, and dried under reduced pressure to yield the title compound as a white solid (450 mg, 24%). A second crop (84 mg) is also isolated. LC-ES/MS m/z (35C1/37C1) 265/267 (M+l). 1H NMR (400 MHz, DMSO-d6) delta 1.16 (s, 3H), 1.71-1.73 (m, 5H), 2.12-2.13 (m, 1H), 2.14 (s, 3H), 3.46-3.50 (m, 1H), 4.93 (s, 1H), 5.26-5.30 (m, 1H), 6.63 (d, J= 8.8 Hz, 1H), 7.47 (d, J= 8.6 Hz, 1H). Chiral HPLC showed the material had an enantiomeric excess of 67%. The enantiomeric excess is determined by SFC on a CHIRALPAK AS-H (4.6 x 150 mm, 5 mupiiota) column using 20% ethanol/carbon dioxide. Flow rate: 5 mL/min. Detection: 225 nm. Isomer 1 (title compound):TR = 1.39 min; Isomer 2: TR = 1.99 min. The absolute stereochemistry of Isomer 1 (1S,2R) is known by correlation of retentions times with Isomer 1 and Isomer 2 as described inExample 3.The enantioenriched material (534 mg) is dissolved in methanol (5.5 mL) and purified in 500 mu?. injections by SFC on a CHIRALPAK AS-H (2.1 x 25 cm, 5 muiotaeta) column using 20% ethanol/carbon dioxide. Flow rate: 70 mL/min. Detection: 225 nm. The title compound is isolated as the first eluting peak, Isomer 1 (326 mg) in 99% enantiomeric excess. The enantiomeric excess is determined by SFC as described above.
The synthetic route of 796600-15-2 has been constantly updated, and we look forward to future research findings.