Journal
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
Volume 2022, Issue 43, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.202201002
Keywords
Bis-allyl alcohol; Cascade reaction; Crabtree's catalyst; Enone moieties; Synthetic methods
Categories
Funding
- New Energy and Industrial Technology Development Organization (NEDO) [JPNP20004]
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This study presents a synthetic method to produce E-selective or multi-substituted enones under reducing conditions through an Ir-catalyzed cascade reaction, resulting in the desired product with high diastereoselectivity. The results also suggest a hypothesis of the reaction mechanism.
Enone compounds are well-known as useful building blocks that can be converted into a variety of valuable compounds. This study describes a synthetic method to synthesize E-selective or multi-substituted enones by an Ir-catalyzed cascade reaction under reducing conditions. We found that the cascade reaction, including reduction/isomerization/dehydration, proceeds by treating bis-allyl alcohol with Crabtree's catalyst in a hydrogen atmosphere, which forms the desired product with high diastereoselectivity. We investigated acceptable catalysts to the reaction and the synthesis of enone using di-, tri- and tetrasubstituted olefin substrates. Additionally, the given results suggested a hypothesis of reaction mechanism.
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