Regioselective hydration of alkynones by palladium catalysis
作者:Katsuharu Imi、Kumiko Imai、Kiitiro Utimoto
DOI:10.1016/s0040-4039(00)96302-0
日期:1987.1
Diketones are regioselectively prepared from alkynyl ketones under mild conditions by palladium catalysis; 5-heptyn-2-one and 2-(2-nonynyl)cyclohexanone give 1,4-dikektones whereas 2-(2-heptynyl)cyclopentanone and 5,6-didehydroprostaglandin E2 methyl ester afford 1,5-diketones.
Studies Targeting Ryanodol Result in an Annulation Reaction for the Synthesis of a Variety of Fused Carbocycles
作者:Rajdip Karmakar、Arnold L. Rheingold、Glenn C. Micalizio
DOI:10.1021/acs.orglett.9b02278
日期:2019.8.2
described to access a range of polycyclic and highly oxygenated carbocycles. First developed in an approach to the synthesis of ryanodol, metallacycle-mediated annulative diketone–alkyne coupling defines a framework for realization of new retrosynthetic relationships for complex molecule synthesis. In addition to demonstrating this reaction in the context of forging distinct carbocyclic systems, including
A Facile Construction of Bi- or Tricyclic Skeletons by Nickel-Catalyzed Stereoselective Cyclization of Alkynylcycloalkanone
作者:Nozomi Saito、Yasuyuki Sugimura、Yoshihiro Sato
DOI:10.1021/ol101329d
日期:2010.8.6
A nickel-catalyzed intramolecular cyclization of alkynylalkanone in the presence of Et(3)SiH using an NHC ligand produced various carbo- and heterocycles In a stereoselective manner. The reaction would proceed via formation of oxanickelacycle followed by sigma-bond metathesis with silane to give a bi- or tricyclic compound.
IMI, KATSUHARU;IMAI, KUMIKO;UTIMOTO, KIITIRO, TETRAHEDRON LETT., 28,(1987) N 27, 3127-3130