Electric Literature of 2106-18-5, These common heterocyclic compound, 2106-18-5, name is 2-(Trifluoromethoxy)fluorobenzene, its 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 20: 4-[2-FLUORO-3-(TRIFLUOROMETHOXY)PHENYL]-1-PROPYLPIPERIDIN-4-OL To a solution of 1-fluoro-2-(trifluoromethoxy)benzene (1.22 g, 6.77 mmol) in dry tetrahydrofurane (30 ml) at-78 C, under nitrogen, lithium diisopropylamide (2.5 M in hexane, 3.0 ml, 7.45 mmol) was added dropwise. The mixture was stirred for 1 h after which a solution of newly distilled 4-propyl-1-piperidone (0.96 g, 6.77 mmol) in dry tetrahydrofuran (20 ml) was added drop wise. The resulting mixture was stirred at-78 C for 30 min and then brought to ambient temperature. Water (100 ml) was added and the mixture was extracted with ethylacetate (3×100 ml). The combined organic phases was dried (MgS04), filtered and evaporated to dryness. The oily residue was purified by flash column chromatography (ethylacetate/methanol, 1: 1) to give the title compound (0.83 g). MS m/z (rel. intensity, 70 eV) 321 (M+, 5), 293 (14), 292 (bp), 274 (25), 207 (10).
Statistics shows that 2-(Trifluoromethoxy)fluorobenzene is playing an increasingly important role. we look forward to future research findings about 2106-18-5.
Reference:
Patent; A. CARLSSON RESEARCH AB; WO2005/121092; (2005); A1;,
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