78811-30-0Relevant articles and documents
Phenyltelluroacrylonitriles and phenylselenoacrylonitriles as precursors of (Z)-α-phenylseleno-α,β-unsaturated aldehydes, β-amino-α-phenylselenonitriles and Diels-Alder adducts
Silveira, Claudio C,Perin, Gelson,Braga, Antonio L,Dabdoub, Miguel J,Jacob, Raquel G
, p. 5953 - 5959 (2007/10/03)
Reaction of cyanomethylphosphonate with aryl selenenyl (or tellurenyl) halides and aldehydes, under basic conditions, provides α-phenylseleno or α-phenyltelluro acrylonitriles in good yields. Reaction of the α-phenylseleno acrylonitriles with dienes furnishes the corresponding adducts while reaction with amines furnishes α-phenylseleno-β-amino nitriles. Selective reduction of the cyano group with DIBAL-H results in the α-phenylseleno-α,β-unsaturated aldehydes.
Construction of Five-Membered Rings by Michael Addition-Radical Cyclization
Clive, Derrick L.J.,Boivin, Taryn L.B.,Angoh, A. Gaeetan
, p. 4943 - 4953 (2007/10/02)
Enamines react with Michael acceptors 8-10 to produce ketones that, on treatment with lithium acetylides, afford hydroxy acetylenes 3.These compounds then undergo radical cyclization when treated with triphenyltin hydride and AIBN.The products 6 are forme
