The cooperative Lewis- and Brønsted acid catalysis enables a multicomponent synthesis of 3(2H)-furanones from 1,3-diynes, alkyl glyoxylates and water, in which a highly chemo-, regio- and stereoselective alkyne-carbonyl cross metathesis of 1,3-diynes has been developed and suggested as the initial step of the annulation.
Kitamura, Tsugio; Tanaka, Toshimasa; Taniguchi, Hiroshi, Journal of the Chemical Society. Perkin transactions I, 1991, # 11, p. 2892 - 2893
作者:Kitamura, Tsugio、Tanaka, Toshimasa、Taniguchi, Hiroshi、Stang, Peter J.
DOI:——
日期:——
Synthesis of (<i>E</i>)-1,2-Divinyl-1,2-diethynylethene (DVDEE) via the Palladium-Catalyzed Reaction of Conjugated Diynes. A New Building Block for Molecular Scaffolding
作者:Drexel H. Camacho、Shinichi Saito、Yoshinori Yamamoto
DOI:10.1021/ja017626p
日期:2002.2.1
Conjugated diynes undergo dimerization in the presence of acetic acid and catalytic amounts of Pd(PPh3)4. The unprecedented reaction gives a novel chromophore containing the (E)-1,2-divinyl-1.2-diethynylethene (DVDEE) module, which is a potentially viable building block for acetylenic scaffolding.