Lithium tri-s-butylborohydride → 5-Bromo-1-methoxy-3-methyl-8-(1-methylethoxy)naphthalene

Participants

Reaction Steps

To a 0° C. cold solution of 7.60 g (19.6 mmol) 1-bromo-7-bromomethyl-4-isopropoxy-5-methoxy-naphthalene in 150 mL dry dichloromethane, 20.0 mL (20.0 mmol) of a 1M L-selectride-solution was added under Ar. After 2 h, further 2.50 mL (2.50 mmol) 1M L-selectride-solution was added. After that the solvent was removed in vacuo and the residue was filtered over a short silica gel column (petroleum/acetone, 30:1). After removal of the solvent in vacuo, the residue was recrystallized from acetone to give 5.90 g (98%) of 4 as colorless needles (m.p. 78° C.).

Provenance & Evidence