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A convenient preparation of (1 R,2S,3R,4S)-3-(neopentyloxy)isoborneol (= (1 R,2S,3R,4S)-3-(2,2-dimethylpropoxy)-I ,7,7-trimethylbicyclo[2.2.l]heptan-2-ol; la), a valuable chirdl auxiliary, is described. The synthesis iiivolves six steps starting from the readily available camphorquinone ( 5 ) and gives l a in 48% overall yield. The key step is the chemoselective hydrolysis of the less hindered 3,3-dioxolane moiety in the camphorquinone diacetal 4.