672-57-1, 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. 672-57-1, name is 1-Chloro-2-iodo-4-(trifluoromethyl)benzene, A new synthetic method of this compound is introduced below.
1 4-(2-Chloro-5-trifluoromethylphenyl)-1-fluoro-2-fluoromethyl-3-butyn-2-ol A mixture of 4-chloro-3-iodobenzotrifluoride (63.3 g), 1-fluoro-2-fluoromethyl-3-butyn-2-ol (28.8 g), triethylamine (26.2 g), cuprous iodide (0.38 g), bis(triphenylphosphine)palladium chloride (1.40 g) and N,N-dimethylformamide (100 ml) was stirred under a nitrogen atmosphere under heating at 80 C. for 1.5 hours. To the reaction mixture, 2 N HCl and a hexane/ethyl acetate mixed solvent (3/1) were added and the insoluble matter was filtered off with Celite; following extraction with a hexane/ethyl acetate mixed solvent (3/1), the resulting organic layers were combined, washed with a saturated aqueous solution of sodium chloride, dried with anhydrous sodium sulfate and concentrated under reduced pressure; the resulting residue was purified by distillation to give 4-(2-chloro-5-trifluoromethylphenyl)-1-fluoro-2-fluoromethyl-3-butyn-2-ol (44.5 g) having a boiling point of 105-107 C./1 mmHg. 1H-NMR (CDCl3) delta: 2.70-3.00(1H, m), 4.52-4.71(4H, m), 7.54-7.56(2H, m), 7.76(1H, t, J=0.7 Hz)
The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.
Reference:
Patent; Chugai Seiyaku Kabushiki Kaisha; US6455708; (2002); B1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com