synthesis of selenoketone-platinum complexes 3a-3c was achieved by reacting selenoketones 4 with (η 2 -ethylene)bis(triphenylphosphine)platinum(0) (1). 1,1,3,3-Tetramethylindan-2-selone-platinum complex 3b was determined by X-ray crystallographic analysis to be an η 2 -selenoketone-platinum complex. Interestingly, only one isomer of selenofenchone-platinum complex 3c was formed by this reaction.
Reaction of Seleno- or Thiofenchone with Propiolic Acid: Wagner-Meerwein Rearrangement
作者:Kentaro Okuma、Hiroyuki Matsui、Yuichi Mori
DOI:10.1002/hc.21181
日期:2014.11
A reaction of selenofenchone with propiolicacid in refluxing chloroform produced 1,3-oxaselenin-6-one, which further reacted with acid to afford the ring-opened product. A reaction of 1,3-oxathiin-6-one prepared from thiofenchone with trifluoroacetic acid gave a Wagner–Meerwein rearranged product. In the presence of AlCl3, thiofenchone reacted with methyl propiolate to afford the corresponding rearranged
reported. The reaction of dimagnesium salts of ketone hydrazones with diselenium dichloride affords an intermediate tentatively assigned as tetraselenides, which are converted into selenoketones by heating in the presence of tributylamine. A comparative study on the reactions of 1,1,3,3-tetramethyl-2-indanselone and the corresponding thioketone with Grignard and organolithium reagents have been carried