Cyclic acetal groups at the position 8 of the cis-bicyclo| 3.3. 0| octane system may act as regio-and stereoselective control elements, respectively, in hydroboration and oxymercuration reactions. Whereas the regioselectivity observed in hydroborations must be ascribed to homoallylic inductive effects, and leads predominantly to exo, 1, 3-bifunctional relationships, the effect of acetal group in oxymercuration is mainly stereoselective due to ...
![(3aS,6aS)-5',5'-dimethyl-3,3a,4,6a-tetrahydro-2H-spiro[pentalene-1,2'-[1,3]dioxane]结构式](https://image.chemsrc.com/caspic/280/92485-80-8.png)
