In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 118684-31-4 as follows. name: tert-Butyl (3-(hydroxymethyl)phenyl)carbamate
[3-(2′,4′-Difluoro-biphenyl-4-yloxymethyl)-phenyl]-carbamic acid tert-butyl esterTo 10 mL of dry CH2Cl2 under argon, in an ice bath, was added 2′,4′-difluoro-biphenyl-4-ol (206 mg, 1.0 mmol) and triphenylphosphine resin (1.1 meq/g, 1.36 g, 1.5 mmol). The mixture was stirred for 20 min and DIAD (295 uL, 1.5 mmol) was added. The reaction was stirred an additional 5 min at ice bath temperature and [3-(2′,4′-difluoro-biphenyl-4-yloxymethyl)-phenyl]-carbamic acid tert-butyl ester (223 mg, 1.0 mmol) and triethylamine (209 uL, 1.5 mmol) were added. The mixture was stirred at ice bath temperature for 20 min and allowed to warm slowly to RT and stirred overnight. The reaction mixture was filtered, concentrated and purified by flash chromatography with a gradient of 0-10% ethyl acetate in hexanes to yield 235.4 mg (57%) of [3-(2′,4′-difluoro-biphenyl-4-yloxymethyl)-phenyl]-carbamic acid tert-butyl ester. 1H-NMR (CDCl3) delta ppm 1.52 (s, 2H), 6.51 (br. S, 1H), 6.82-6.98 (m, 2H), 7.03 (d, J=8.7 Hz, 2H), 7.08-7.17 (m, 1H), 7.28-7.39 (m, 3H), 7.42 (d, j=8.7 Hz, 2H), 7.50 (s, 1H).
According to the analysis of related databases, 118684-31-4, the application of this compound in the production field has become more and more popular.
Reference:
Patent; Hoffmann-La Roche Inc.; US7939569; (2011); B1;,
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