188802-36-0Relevant academic research and scientific papers
Julia-Colonna asymmetric epoxidation reactions under non-aqueous conditions: Rapid, highly regio- and stereo-selective transformations using a cheap, recyclable catalyst
Allen, Joanne V.,Bergeron, Sophie,Griffiths, Matthew J.,Mukherjee, Shubhasish,Roberts, Stanley M.,Williamson, Natalie M.,Wu, L. Eduardo
, p. 3171 - 3179 (2007/10/03)
The asymmetric oxidation of some enones (Table 1), selected dienones 3-5, and a trienone 13 is accomplished using poly-L-leucine or poly-D-leucine and urea hydrogen peroxide under non-aqueous conditions. One of the resultant epoxy ketones 6 has been converted into the δ-lactones 19 and 22.
Highly Stereoselective Synthesis of Conjugated Polyenes via a Homocoupling Reaction of Unsaturated Silanes
Babudri, Francesco,Cicciomessere, Angela R.,Farinola, Gianluca M.,Fiandanese, Vito,Marchese, Guiseppe,et al.
, p. 3291 - 3298 (2007/10/03)
A new method for the synthesis of conjugated polyenes containing up to eight double bonds with all-E configuration is reported.The procedure is based upon a homocoupling reaction of dienyl-, trienyl, or tetraenylsilanes, promoted by PdCl2 in methanol and in the presence of LiCl and CuCl2.Configurational and conformational assignments were rigorously made on the basis of NMR spectra.The compounds obtained represent a novel interesting class of symmetrically substituted polyenes with potential optical and electrooptical properties.By changing the solvent, the homocoupling process can be switched to the halogenation of the silyl-substituted terminal double bond, thus leading to polyenyl halides.
