Schnell ans Ziel: Aza‐Diels‐Alder‐Reaktionen von Aminal‐Olefinen mit Azadienen führen auf schnellem Weg zu Spirochinazolin‐Alkaloiden mit Indolinsystemen. Dieser Ansatz kam auch in den Totalsynthesen der Titelverbindungen (siehe Bild) zur Anwendung.
Allenes have become an important class of compounds for the purposes of organic synthesis, medicinal chemistry, and materials science, therefore, methods for the efficient synthesis of allenes from easily available starting materials are highly desirable. This article discusses the preparation procedure of (R)‐4‐Cyclohexyl‐2,3‐butadien‐1‐ol
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