Diastereomerically and enantiomerically pure decahydro-6-isoquinolone derivative 7 (>99% de, 97% ee) was obtained from the Michael addition product 3. Interestingly, aldehyde 7 reacted with a number of different Grignard reagents to give the secondary alcohols 9 in good yields as single diastereomers. This result can be explained by taking the Felkin-Anh model into account.
1. Die Reaktion des Cyclononatetraenids (I) mit dem Acetat (II) bzw. mit dem Dihalogenether (VII) bei tiefen Temp· liefert anstelle der erwarteten Cyclononatetraene (III) bzw. (VIII) ‐ aus denen mit K‐tert.‐butylat die Nonafulvene (VI) erhältlich sein sollten ‐ die Verbindungen (IV) (nachfolgendes mehrtägiges Erhitzen → (V)) bzw. (IX).
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.