反应详情

To a solution of tert-butyl 2-chloro-4-(prop-1-en-2-yl)benzoate (200 mg, 0.79 mmol) in methanol (20 mL) was added platinum(IV) oxide (20 mg). The resultant reaction mixture was stirred at room temperature for 24 hours under hydrogen atmosphere. Insoluble matters were removed using celite, and the filtrate was concentrated in vacuo to give tert-butyl 2-chloro-4-isopropylbenzoate (150 mg, 74.4%) as a white solid which was used in the next step directly. LRMS (M+H+) m/z: calcd 255.11. found 255 1H NMR (300 MHz, CD3OD) δ 7.67 (d, J=8.1 Hz, 1H), 7.36 (d, J=1.8 Hz, 1H), 7.28 (dd, J1=8.1 Hz, J2=1.8 Hz, 1H), 2.98 (m, 1H), 1.63 (s, 9H), 1.29 (d, J=6.9 Hz, 6H).

1. customThe resultant reaction mixture
2. customInsoluble matters were removed
3. concentrationthe filtrate was concentrated in vacuo