Conjugated cyclic enones react smoothly in water with a variety of aldehydes (Baylis-Hillman reaction) in the presence of surfactants above their critical micelle concentrations (CMC).
Total Synthesis of (±)-2-<i>O</i>-Methylneovibsanin H
作者:Annette P.-J. Chen、Craig M. Williams
DOI:10.1021/ol801117e
日期:2008.8.21
The totalsynthesis of (+/-)-2- O-methylneovibsanin H was achieved in 12 steps. An acid-catalyzed, one-pot, four-step cascade reaction was key to the concise totalsynthesis, lending support to the proposed biosynthesis.
Construction of the Cyclovibsanin Core via a Biogenetically Modeled Approach
作者:David P. Tilly、Craig M. Williams、Paul V. Bernhardt
DOI:10.1021/ol051897d
日期:2005.11.1
[reaction: see text] Construction of the 15-O-methylcyclovibsanin B core was achieved expediently in eight linear steps utilizing a biogeneticallymodeled approach.
Synthetic studies towards the novel neurotrophic diterpenoids neovibsanins A and B: construction of the ABC core
作者:Goverdhan Mehta、Bilal Ahmad Bhat
DOI:10.1016/j.tetlet.2009.03.040
日期:2009.5
A concise, general approach to the tricyclic furo-furan-based corestructure present in the bioactive natural products neovibsanins A and B, from readily available Baylis–Hillman adducts, is delineated.
Cyclic Enones as Substrates in the Morita-Baylis-Hillman Reaction: Surfactant Interactions, Scope and Scalability with an Emphasis on Formaldehyde
作者:Brett D. Schwartz、Achim Porzelle、Kevin S. Jack、Jonathan M. Faber、Ian R. Gentle、Craig M. Williams
DOI:10.1002/adsc.200800739
日期:2009.5
Abstractmagnified imageTraditionally, cyclic enones and formalin are reactants notorious for displaying problematic behaviour (i.e., poor solubility and low yields) under Morita–Baylis–Hillman (MBH) reaction conditions. The body of research presented herein focuses on the use of surfactants in water as a solvent medium that offers a resolution to many of the issues associated with the MBH reaction. Reaction scope, scalability and small angle X‐ray scattering have been studied to assist with the understanding of the reaction mechanism and industrial application. A comparison against known literature methods for reaction scale‐up is also discussed.