M. Y. Belikov, S. V. Fedoseev, O. V. Ershov
Sep 7, 2016
Citations
0
Influential Citations
16
Citations
Journal
Tetrahedron Letters
Abstract
Abstract The rearrangement of 4-oxobutane-1,1,2,2-tetracarbonitriles to give the penta-1,3-diene-1,1,3-tricarbonitrile moiety, accompanied by elongation of the carbon chain via introduction of the cyano group carbon atom to the carbon skeleton, is described. The rearrangement in acetic acid in the presence of ammonium acetate allows the synthesis of 2-(3-cyano-7a-hydroxy-5,6,7,7a-tetrahydro-1 H -indol-2(4 H )-ylidene)malononitriles, which are structural analogs of practically significant tricyanofuran (TCF) and tricyanopyrrole (TCP) acceptors for donor–acceptor chromophores.