Results 91 to 100 of about 6,084 (222)

Rapid assembly of polycyclic structures via sigmatropic rearrangement of s-propargyl xanthates [PDF]

open access: yes, 2012
International audienceUpon heating in chlorobenzene, propargyl xanthates yield the corresponding 4,5-bis(alkylidene)-1,3-dithiolan-2-ones which are trapped by unactivated olefins in an intramolecular Diels-Alder cycloaddition yielding interesting ...
Harrington, Ryan M.   +2 more
core   +3 more sources

Protonation of ferrocene in the gas phase [PDF]

open access: yes, 1994
Hydrogen-deuterium exchange, proton and deuteron transfer, and collision-induced dissociation experiments involving protonated ferrocene, [Fe(c-C5H5)2]H+, and isotopically labeled analogues have been carried out using a Fourier transform ion cyclotron ...
Hop, C.E.C.A., McMahon, T.B.
core   +1 more source

Novel Synthesis and Structures of Tris-Annelated Benzene Donors for the Electron-Density Elucidation of the Classical Mills−Nixon Effect [PDF]

open access: yes, 1998
A versatile method for the high-yield synthesis of various tris-, bis-, and mono-annelated benzenes (as well as cyclooctatetraene) is based on the Pd-catalyzed coupling of three (or four) ethylenic units comprised of α,β-dibromoalkenes and α‘-alkenyl ...
Kochi, Jay K.   +3 more
core   +1 more source

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