Miyaura反应制取硼酸酯失败，试试这个方法

layers were separated. The aqueous layer was extracted with EtOAc (2×100 mL). The combined organic layers were washed with brine, dried (Na2SO4) and concentrated at reduced pressure to yield the product as a colorless oil (5.96 g, 25.5 mmol, 95%). The NMR-spectroscopic data were in agreement with published data: 3 1 H NMR (300 MHz, CDCl3): δ=1.33 (s, 12H, 4×CCH3), 3.82 (s, 3H, OMe), 6.90 (m, 2H, 3ʼ-H, 5ʼ-H), 7.76 ppm (m, 2H, 2ʼ-H, 4ʼ-H).

【 European Journal of Organic Chemistry , 2019, 6697 - 6701】

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