Abstract
| - Ab initio MO and experimental π-selectivities ofhydride additions to 4-oxatricyclo[5.2.1.02,6]decan-10-one and4-oxatricyclo[5.2.1.02,6]dec-8-en-10-one are described. Theinteractions of σC1-C2 and σC6-C7 with π*CO, on one hand,and those of σC1-C9 and σC7-C8 with π*CO, on the other hand,support anti-selectivities for both. This is in full accordancewith the experiments. The arguments that are based onelectrostatic interactions and electron donation from the ringoxygen do not apply.
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