AlMe 3 (2.0 M in toluene, 5.00 cm 3 , 10.0 mmol) was slowly added by syringe to a stirred solution of Et 3 N (1.50 cm 3 , 10.8 mmol) in toluene (10 cm 3 ) at room temperature. All volatiles were then removed under dynamic vacuum at room temperature to afford colorless crystals of the product (1.690 g, 97.5 %). The same volatility considerations as with py-AlMe 3 apply.