反应详情

Methylamine (2.35 mL of an 8.03 M solution in ethanol, 18.8 mmol) in 5 mL of methylene chloride was added under nitrogen dropwise over 5 minutes to a mixture of 5-bromo-6-methoxy-naphthalene-2-carbaldehyde (1.00 g, 3.77 mmol), prepared in the previous step, and 3 g of anhydrous MgSO4 in 20 mL of methylene chloride at room temperature. After the addition the reaction was stirred at room temperature for 21 h (overnight). The reaction was filtered and the filtrate concentrated under reduced pressure to give (5-bromo-6-methoxy-naphthalen-2-ylmethylene)-methyl-amine (1.05 g, 100%) as a light tan solid, mp 105-107° C.

1. additionAfter the addition the reaction
2. filtrationThe reaction was filtered
3. concentrationthe filtrate concentrated under reduced pressure