445-14-7,Some common heterocyclic compound, 445-14-7, name is 2-Amino-4-chlorobenzotrifluoride, molecular formula is C7H5ClF3N, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
Example 5 3-((5-chloro-2-(trifluoromethyl)phenyl)ethvnyl)-5-(l-(piperidin-4-yl)-lH-pyrazol-4- yl)-lH-pyrrolor2,3-b1pyridine Step 1) 2-bromo-4-chloro-l-(trifluoromethyl)benzene To a stirred solution of 40percent HBr (2.20 mL, 15.34 mmol) in 0 (2 mL) was added 2-amino-4- chlorobenzotrifluoride (0.50 g, 2.56 mmol) at 0 ¡ãC. Then a solution of sodium nitrite (0.21 g, 3.07 mmol) in H20 (2 mL) was added dropwise at 0 ¡ãC. The mixture was stirred at 0 ¡ãC for a further 0.5 hours, a solution of cuprous bromide (0.63 g, 4.35 mmol) in 40percent HBr (2.20 mL, 15.34 mmol) and H20 (3 mL) was added. The mixture was stirred at 75 ¡ãC for 3 hours, then cooled to rt, and extracted with EtOAc (40 mL x 4). The combined organic phases were washed with brine (80 mL x 2), dried over anhydrous Na2S04 and concentrated in vacuo to give the title compound as a yellow liquid (0.76 g, 100percent). GC -MS: 257.9.
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 2-Amino-4-chlorobenzotrifluoride, its application will become more common.
Reference:
Patent; CALITOR SCIENCES, LLC; SUNSHINE LAKE PHARMA CO., LTD.; XI, Ning; LI, Xiaobo; ZHOU, Shiqing; WO2014/89280; (2014); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics