Pyrrolidine(thi)ones Substituted by Heterocyclic Substituents in The 3-Position
申请人:FRORMANN Sven
公开号:US20080293749A1
公开(公告)日:2008-11-27
Pyrrolidine(thi)one compounds substituted by heterocyclic substituents in the 3-position, their preparation and use in pharmaceutical compositions, in particular as immunomodulators for treatment and/or inhibition of inflammatory and autoimmune diseases and haematological-oncological diseases.
advantages of our methodology include an increased synthesis speed, very mild conditions giving access to hitherto unknown or highly reactive classes of isocyanides, rapid access to large numbers of functionalized isocyanides, increased yields, high purity, proven scalability over 5 orders of magnitude, increased safety and less reaction waste resulting in a highly reduced environmental footprint. For example
Investigation on the photoreactions of nitrate and nitrite ions with selected azaarenes in water
作者:Toralf Beitz、Wolfgang Bechmann、Rolf Mitzner
DOI:10.1016/s0045-6535(98)00188-x
日期:1999.1
spectrum of oxidized products corresponded to the one got in the photoreactions of azaarenes with hydrogen peroxide. The formation of several oxidation and nitration products of the pyridine ring with its low electron density was explained by the reaction of excited states of azaarenes. The photoreactions with nitrite ions only led to the formation of oxidized and nitrated products. Nitroso products were not
A PPTS (pyridinium p‐toluenesulfonate)‐catalyzed bicyclization reaction of 2‐isocyanobenzaldehydes as 1,5‐dielectrophiles with various amines has been developed. The reaction not only provides a simple and efficient strategy for the assembly of structurally diverse fused quinazoline derivatives from readily available substrates under metal‐free and mild conditions in a single step with only water and