490039-72-0Relevant articles and documents
Straightforward access to ethyl 3-aminofuropyridine-2-carboxylates from 1-chloro-2-cyano- or 1-hydroxy-2-cyano-substituted pyridines
Cailly, Thomas,Lemaitre, Stephane,Fabis, Frederic,Rault, Sylvain
, p. 3247 - 3251 (2008/04/03)
The conditions of the synthesis of the four regioisomers of ethyl 3-aminofuropyridine-2-carboxylate are described and discussed in detail. The starting materials are either 1-chloro-2-cyanopyridines or 1-cyano-2- hydroxypyridines. Georg Thieme Verlag Stuttgart.
Synthesis of ortho-substituted cyanopyridines through lithio intermediate trapping
Cailly, Thomas,Fabis, Frédéric,Lema?tre, Stéphane,Bouillon, Alexandre,Rault, Sylvain
, p. 135 - 137 (2007/10/03)
Ortholithiation of 4-cyanopyridine using 2,2,6,6-tetramethylpiperidide (LiTMP) and trapping the lithio intermediate with electrophiles represents an efficient and straightforward access to ortho-substituted-4-cyanopyridines. The cyano group can be used as an ortho-directing group and allows the preparation of 3-halogeno-4-cyanopyridines. Reactivity of 2- and 3-cyanopyridines is also investigated and seems to give similar results.
Carbopalladation of nitriles: Synthesis of 2,3-diarylindenones and polycyclic aromatic ketones by the Pd-catalyzed annulation of alkynes and bicyclic alkenes by 2-iodoarenenitriles
Pletnev, Alexandre A.,Tian, Qingping,Larock, Richard C.
, p. 9276 - 9287 (2007/10/03)
2-Iodobenzonitrile, its derivatives, and various heterocyclic analogues undergo palladium(O)-catalyzed annulation onto diarylacetylenes or bicyclic alkenes to afford 2,3-diarylindenones and polycyclic aromatic ketones in very good to excellent yields. This reaction represents one of the first examples of the addition of an organopalladium moiety to the carbon-nitrogen triple bond of a nitrile. The reaction is compatible with a number of functional groups. A reaction mechanism, as well as a model accounting for the electronic effects of substituents on the aromatic ring of the nitrile, is proposed.