Continuous Pd-Catalyzed Carbonylative Cyclization Using Iron Pentacarbonyl as a CO Source
作者:Pavol Lopatka、Martin Markovič、Peter Koóš、Steven V. Ley、Tibor Gracza
DOI:10.1021/acs.joc.9b02453
日期:2019.11.15
continuous flowcarbonylationreaction using iron pentacarbonyl as source of CO. The described transformation using this surrogate was designed for use in commonly accessible flow equipment. Optimized conditions were applied to a scalable synthesis of the natural compound isolated from perianal glandular pheromone secretion of the African civet cat. In addition, a flowPd-catalyzedcarbonylation of aryl
Palladium-Catalyzed Stereoselective Cyclization of <i>in Situ</i> Formed Allenyl Hemiacetals: Synthesis of Rosuvastatin and Pitavastatin
作者:Pierre A. Spreider、Bernhard Breit
DOI:10.1021/acs.orglett.8b01156
日期:2018.6.1
A diastereoselective palladium-catalyzed cyclization of allenyl hemiacetals is described. It permits the selective synthesis of 1,3-dioxane derivatives, precursors for syn-configured 1,3-diols which make an appearance in all of the statin representatives. The reaction allows the total synthesis of Rosuvastatin and Pitavastatin in a straightforward fashion.
Preparation of Optically Active Allylic Hydroperoxy Alcohols and 1,3-Diols by Enzyme-Catalyzed Kinetic Resolution and Photooxygenation of Chiral Homoallylic Alcohols
作者:Waldemar Adam、Chantu R. Saha-Möller、Katharina S. Schmid
DOI:10.1021/jo9915630
日期:2000.3.1
photooxygenation of the racemic homoallylic alcohols 1 gave the racemic hydroperoxy alcohols 2, which have subsequently been kinetically resolved by horseradish peroxidase (HRP); alternatively, first the lipase-catalyzed resolution afforded the opticallyactive homoallylic alcohols 1 and subsequent photooxygenation led to the enantiomerically enriched hydroperoxy alcohols 2.