Reference of 7073-69-0 ,Some common heterocyclic compound, 7073-69-0, molecular formula is C9H11BrO, 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.
C. 3,3-dimethyl-3H-benzo[c][1,2]oxaborol-1-ol To a solution of 2-(2-bromo-phenyl)-propan-2-ol (4.0 g, 18.6 mmol, prepared as described in Egan, W. et al. J. Am. Chem. Soc., 1971, 93, 6205) in 60 mL of anhydrous THF under argon at -78 C. was slowly added n-butyl lithium (15 mL, 2.5 M). The mixture was stirred at -78 C. for 2 h, and then triisopropylborate (5.5 mL, 24.2 mmol) was added to the mixture. The mixture was allowed to warm to room temperature and stirred at room temperature for 12 h. The mixture was then cooled to 0 C. and hydrochloric acid (10 mL, 1N) was added to the mixture until pH was <5. The mixture was then stirred at room temperature for 1 h. The two layers were separated. The aqueous layer was extracted twice with ethyl acetate. The organic layers were combined, dried with anhydrous sodium sulfate and filtered. The filtrate was concentrated under reduced pressure to afford a yellow oil. The oil was purified by chromatography (silica, EtOAc: hexanes,1:3) to afford a white solid (1.16 g, 40%). 1H NMR (400 MHz, CDCl3) delta (ppm): 7.53 (m, 1H), 7.36 (m, 2H), 7.28 (m, 1H), 1.62 (s, 3H), 1.61 (s, 3H).
In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles. 7073-69-0, 2-(2-Bromophenyl)propan-2-ol, other downstream synthetic routes, hurry up and to see.
Reference:
Patent; Cheung, Wing S.; Parks, Daniel J.; Parsons, William H.; Patel, Sharmila; Player, Mark R.; US2008/146637; (2008); A1;,
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