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Yne‐allenes bearing both a C—C triple bond and an allene unit are a class of focal substrates in organic synthesis, in view of their structure diversity, high reactivity and intermediate variety in the past years. Engaging yne‐allenes in numerous annulation cascades provides efficient and direct accesses to elaborate functionalized polycyclic molecular architectures in a convergent manner. There are...
Molecular scaffolds endowed with all‐carbon quaternary stereocenter are ubiquitous in natural products and significant bioactive molecules. However, efficient construction of this type of structure units is full of challenge due to their congested chemical environment. Herein, we report a new gold(I) self‐relay catalysis merging [3,3]‐sigmatropic rearrangement/Nazarov cyclization with allylic alkylation...
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