Non‐Induced, Highly Diastereoselective Intramolecular Ene Reactions of 1,7‐Dienes to trans‐1,2‐Disubstituted Cyclohexanes

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Abstract
The terminology of stereoselective synthesis is rapidly coming to resemble the legendary Tower of Babel. “Induced” and “non‐induced diastereoselective” are the most recent newcomers. Whether these unquestionably useful terms will find acceptance is a matter for the future to decide. They were introduced in order to explain the title reaction in which 1,2‐disubstituted cyclohexanes with a trans: cis selectivity of > 99 : 1 are formed.