Application of 117482-84-5,Some common heterocyclic compound, 117482-84-5, name is 3-Chloro-4-fluorobenzonitrile, molecular formula is C7H3ClFN, 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.
3.49 g (20 mmol) 3-Boc-amino-propylamine in 5 ml DMF are combined with 2.75 ml (25 mmol) NMM. After the addition of 3.11 g (20 mmol) 3-chloro-4-fluoro-benzonitrile the mixture is stirred for 3.5 hours at ambient temperature under a nitrogen atmosphere, heated to 105 C. for 20 minutes and extracted with ethyl acetate. The combined organic phases are washed with water and sat. sodium chloride solution, dried over magnesium sulphate and evaporated down i. vac. The residue is further reacted without any more purification. Yield: 5.50 g (89%) C15H20N3O2 (309.80) Mass spectrum: (M+H)+=310/312 (chlorine isotope) Rf value: 0.40 (silica gel; petroleum ether/ethyl acetate=2:1)
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 3-Chloro-4-fluorobenzonitrile, its application will become more common.
Reference:
Patent; Boehringer Ingelheim International GmbH; US2005/203078; (2005); A1;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts