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The transition metal catalyzed hydrogenation of alkenes is a well‐developed technology used on lab scale as well as on large scales in the chemical industry. Site‐ and chemoselective mono‐hydrogenations of polarized conjugated dienes remain challenging. Instead, stoichiometric main‐group hydrides are used rather than H2. As part of an effort to develop a scalable route to prepare geranylacetone, we...
The first total synthesis of a tetracyclic marine pyridinium alkaloid hinged on recent advances in chemoselectivity management: While many classical methods failed to afford the perceptively simple pyridine‐containing core of the target, nickel/iridium photoredox dual catalysis allowed the critical C−C bond to be formed in good yield. Likewise, ring closing alkyne metathesis (RCAM) worked well in...
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