M. Oda et al., AN EFFICIENT SYNTHETIC METHOD FOR BETA-CYCLOLAVANDULAL AND ITS CORRESPONDING ALCOHOL, Recueil des travaux chimiques des Pays-Bas, 115(10), 1996, pp. 438-440
3,3-Dimethylcyclohexanone (5) was efficiently converted to methyl beta
-cyclolavandulate (6) in 74% yield in three steps, one of which includ
ed the preparation of beta-methyl alpha,beta-unsaturated esters by cou
pling lithium dimethylcuprate with enol phosphates of beta-oxo esters.
Reduction of 6 with LiAlH4 gave beta-cyclolavandulol (2) in 94% yield
and oxidation of 2 with pyridinium chlorochromate in the presence of
molecular sieves afforded the title aldehyde quantitatively.