Bredt's rule. A derivative of bicyclo[4,2,1]non-1(8)-ene
Abstract
The bicyclo[4,2,1]nonanols (II; R1= H, R2= OH; R1= OH, R2= H) are obtained by reduction of the lactone (I) with lithium hydrido-t-butoxyaluminate, and dehydrochlorination of the chloride (II; R1= H, R2= Cl) with collidine affords the bridgehead olefin (V).