2-Methyl-2-pentenal → 4-Methyl-7-ethyl-3-nonen-5-ol

Participants

Reaction Steps

A Grignard reagent, prepared by reacting 11.4 g (0.47 g atom) of magnesium in 100 ml of ether and 77.6 g (0.47 mol) of 1-bromo-2-ethylbutane in 400 ml of ether, is reacted with 38.4 g (0.39 mol) of 2-methyl-2-pentenal in a manner analogous to Example 5. Fractional distillation of the crude product (79.8 g) over a 15 cm Widmer column gives 29.9 g (40.3%) of olfactorily good 4-methyl-7-ethyl-3-nonen-5-ol of boiling point 105°-106° C./12 mm Hg.

Provenance & Evidence