N-Heterocyclic Carbene-Catalyzed (4 + 2) Cycloaddition/Decarboxylation of Silyl Dienol Ethers with α,β-Unsaturated Acid Fluorides
摘要:
Herein we report the first all-carbon N-heterocyclic carbene-catalyzed (4 + 2) cycloaddition. The reaction proceeds with alpha,beta-unsaturated acid fluorides and silyl dienol ethers and produces 1,3-cyclohexadienes with complete diastereocontrol (dr > 20:1) while demonstrating a new type of reaction cascade exploiting alpha,beta-unsaturated acyl azoliums.
Enabling the Development of N-Heterocyclic Carbene (NHC) Catalyzed Reactions: Practical Methods for the Preparation of 1-Acyl-2-Alkylcycloalkenes from Cycloalkanones
Aliphatic Friedel-Crafts reactions. Part VII. Preparation of αβ- and βγ-unsaturated ketones from substituted cyclohexenes
作者:J. K. Groves、N. Jones
DOI:10.1039/j39680002898
日期:——
The yield of βγ-unsaturatedketone obtained by acylation of 1-methylcyclohexene under various conditions is reported. A series of 1-acyl-2-alkylcyclohexenes has been prepared by base-catalysed isomerisation of some initial acylation products.