Synthesis and Reactivity of Bicyclo[3.2.1]octanoid-Derived Cyclopropanes
作者:John R. Goodell、Jennifer L. Poole、Aaron B. Beeler、Jeffrey Aubé、John A. Porco
DOI:10.1021/jo2018922
日期:2011.12.2
Photochemical oxa-di-π-methane rearrangement of bicyclo[3.2.1]octanoid scaffolds affords multifunctional, donor–acceptor cyclopropanes. A related photochemical reaction of an iminium ether substrate uncovered an unprecedented aza-di-π-methane rearrangement of a β,γ-unsaturated iminium. Donor–acceptor cyclopropanes have been evaluated as substrates for reactions generating several new chemotypes.
Development of an Automated Microfluidic Reaction Platform for Multidimensional Screening: Reaction Discovery Employing Bicyclo[3.2.1]octanoid Scaffolds
作者:John R. Goodell、Jonathan P. McMullen、Nikolay Zaborenko、Jason R. Maloney、Chuan-Xing Ho、Klavs F. Jensen、John A. Porco、Aaron B. Beeler
DOI:10.1021/jo901073v
日期:2009.8.21
All automated, silicon-based microreactor system has been developed for rapid, low-volume, multidimensional reaction screening. Use of the microfluidic platform to identify transformations of densely functionalized bicyclo[3.2.1]octanoid scaffolds will be described.
Reaction Discovery Using Microfluidic-Based Multidimensional Screening of Polycyclic Iminium Ethers
作者:Jennifer L. Treece、John R. Goodell、David Vander Velde、John A. Porco、Jeffrey Aubé
DOI:10.1021/jo100087h
日期:2010.3.19
Polycyclic iminium ethers are ambident electrophilic intermediates that react with a range of nucleophiles in a highly condition-dependent manner to afford densely functionalized lactams. In an effort to expand the scope of reactivity and assist in the generation of new chemotypes from these intermediates, several iminium ethers were Subjected to reaction screening using an automated microfluidics reaction platform. Application of tills approach led to the discovery of several interesting reaction pathways involving the iminium ether intermediates that will be described.
Multidimensional Screening and Methodology Development for Condensations Involving Complex 1,2-Diketones
Multidimensional reaction screening with complex cycloheptane-1,2-diones is described. The studies resulted in the discovery of regioselective Lewis acid mediated condensation reactions with substituted ureas, and a diastereoselective hydrogenation process that proceeds through an interesting isomerization of allylpalladium hydride.
Multidimensional Reaction Screening for Photochemical Transformations as a Tool for Discovering New Chemotypes
作者:Véronique I. Martin、John R. Goodell、Oscar J. Ingham、John A. Porco、Aaron B. Beeler
DOI:10.1021/jo500190b
日期:2014.5.2
We have developed an automated photochemical microfluidics platform that integrates a 1 kW high-pressure Hg vapor lamp and allows for analytical pulse flow or preparative continuous flow reactions. Herein, we will discuss the use of this platform toward the discovery of new chemotypes through multidimensional reaction screening. We will highlight the ability to discretely control wavelengths with optical