Palladium-Catalyzed Oxidative Amination of Alkenes: Improved Catalyst Reoxidation Enables the Use of Alkene as the Limiting Reagent
作者:Michelle M. Rogers、Vasily Kotov、Jaruwan Chatwichien、Shannon S. Stahl
DOI:10.1021/ol701903r
日期:2007.10.1
Palladium-catalyzed methods for intermolecular aerobic oxidative amination of alkenes have been identified that are compatible with the use of alkene as the limiting reagent. These procedures, which enhance the utility of this reaction with alkenes that are not commercially available, are demonstrated with substrates bearing dialkyl ether, carboxyester, epoxide, and silyl ether groups.
New Route to 4-Aminocyclopent-2-en-1-ols: Synthesis and Enantioselective Rearrangement of 4-Amino-substituted Cyclopentene Oxides
作者:Stephen Barrett、Peter O'Brien、H.Christian Steffens、Timothy D Towers、Matthias Voith
DOI:10.1016/s0040-4020(00)00911-x
日期:2000.12
nucleoside analogue synthesis is described. The approach involves the stereoselective preparation of cis 4-amino-substituted cyclopentene oxides and subsequent chiral base-mediated rearrangement to the corresponding allylic alcohols. Full details on the synthesis and stereoselectivity of epoxidation of 4-amino-substituted cyclopentenes are presented.
Compounds of formula (I), which are useful as CSF-1R inhibitors, are provided. Also provided are pharmaceutical compositions and kits comprising said compounds, as well as methods and uses pertaining to said compounds.
Highly diastereoselective Heck–Matsuda reaction with pyrazolyl diazonium salts
作者:F. Bellina、F. Berti、S. M. Bertozzi、T. Bandiera、F. Bertozzi
DOI:10.1039/d3nj01724a
日期:——
The Heck–Matsuda (HM) reaction is a powerful synthetic approach cut out for C–C bonds formation under mild conditions. We demonstrated that pyrazolyl diazonium salts are suitable reagents in this protocol, allowing us to deliver highly substituted cyclopentenols and cyclopentenamines with an excellent degree of diastereoselectivity and a control of enantioselectivity.