boron trifluoride diethyl etherate in dichloromethane T=-13 - -10°C; 2.3 h;

potassium hydroxide in ethanol

1.1: n-butyllithium / hexane; diethyl ether / 0.5 h / -78 °C / |Inert atmosphere 1.2: 0.5 h / -78 °C / |Inert atmosphere 1.3: |Inert atmosphere 2.1: sodium sulfate; silica gel / hexane; tetrahydrofuran; diethyl ether / 0.17 h / |Inert atmosphere View Scheme

(2,6-t-Bu2-4-Me-C6H2O)2AlMe in dichloromethane T=-78°C; 1 h; various organoaluminum reagents; Product distribution;

(i) BF3-Et2O, (ii) Na, liq. NH3, Et2O, (iii) (heating); Multistep reaction;

(i) BF3-Et2O, (ii) H2, Pd-C, EtOH; Multistep reaction;

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