A zwitterionic mechanism accounts for the variety of reactions of t-butylcyanoketen with activated olefins. SINCE Moore's' report that the stable yet active t-butylcyanoketen (TBCK) may be produced easily, it has been used by many investigators to study additions to olefins, and the results support a concerted mechanism in some cases2 and a zwitterionic mechanism in others., Orbital correspondence analysis in maximum symmetry (OCAMS) suggests that [2 + 21 cycloaddition between non-polar olefins
Die kondensierten Cyclohexenone (I) liefern unter Wanderung der Doppelbindung die entsprechenden Ketale (II), die bei der reduktiven Ozonolyse zu den Dioxo‐Verbindungen (III) führen und weiter zu Carbinolen (IV) reduziert werden können, aus denen die Cyclohexenone (V) zugänglich sind.
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