1.1
Reagents:
Butyllithium
Solvents:
Tetrahydrofuran
;
1 h, -78 °C
1.2
Reagents:
Trimethyl borate
;
1 h, -78 °C; -78 °C → rt; overnight, rt
1.3
Reagents:
Hydrochloric acid
Solvents:
Water
;
1 h, rt

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