反应 #2982914
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openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US07939533B2
反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: To a solution of 10.0 g (48.7 mmol) 2-bromo-6-chlorotoluene and 11.3 ml (48.7 mmol) triisopropyl borate in 90 ml dry THF were added dropwise 30 ml (49 mmol) of a 1.6 M solution on n-butyllithium in hexanes at −78° C. under argon. After 45 min the reaction mixture was allowed to warm to room temperature. The reaction was quenched by addition of 5 ml water and the solvent was evaporated in vacuo. Addition of 1 M aqueous hydrochloric acid solution was followed by extraction with four portions of dichloromethane. The combined organic extracts were dried over sodium sulfate and concentrated in vacuo. Crystallisation from heptane gave 5.08 g (61%) of the title compound as a white solid. The reaction was quenched by addition of 5 ml water the solvent was evaporated in vacuo Addition of 1 M aqueous hydrochloric acid solution was followed by extraction with four portions of dichloromethane The combined organic extracts were dried over sodium sulfate concentrated in vacuo Crystallisation from heptane
来源 ID: ord-a407ae54af7f4e53b49fa2480e980722