42086-54-4Relevant academic research and scientific papers
Desymmetrization of meso-Dibromocycloalkenes through Copper(I)-Catalyzed Asymmetric Allylic Substitution with Organolithium Reagents
Goh, Shermin S.,Guduguntla, Sureshbabu,Kikuchi, Takashi,Lutz, Martin,Otten, Edwin,Fujita, Makoto,Feringa, Ben L.
supporting information, p. 7052 - 7055 (2018/06/01)
The highly regio- and enantioselective (up to >99:1 dr, up to 99:1 er) desymmetrization of meso-1,4-dibromocycloalk-2-enes using asymmetric allylic substitution with organolithium reagents to afford enantioenriched bromocycloalkenes (ring size of 5 to 7)
Stereoselective halogenations of alkenes and alkynes in ionic liquids
Chiappe, Cinzia,Capraro, Dario,Conte, Valeria,Pieraccini, Daniela
, p. 1061 - 1063 (2007/10/03)
(matrix presented) Room-temperature ionic liquids, 1-butyl-3-methylimidazolium hexafluorophosphate, 1-butyl-3-methylimidazolium tetrafluoroborate, 1-butyl-3-methylimidazolium bromide, and 1-butyl-3-methylimidazolium chloride, are used as "green" recyclabl
Bromination of Cyclohexa-1,3-diene and (R,S)-Cyclohexa-3,5-diene-1,2-diol
Han, Xinghua,Khedekar, Rajashree N.,Masnovi, John,Baker, Ronald J.
, p. 5245 - 5250 (2007/10/03)
The configuration of 1,2,3,4-tetrabromocyclohexane (mp 90°C), 5a, has been established as 1,2t,3t,4c by an X-ray crystallographic determination. The structures of two of three dibromocyclohexenes (3a, 3b, and 3c) have been reassigned on the basis of NMR e
An Investigation of the Retro Diels-Alder Reaction as a Method for the Generation of Diatomic Sulfur
Gilchrist, Thomas L.,Wood, Jane E.
, p. 9 - 16 (2007/10/02)
The cyclic disulfides 2,3-dithiabicyclooct-5-ene 5, 1,4-dihydro-2,3-benzodithin 6 and hexahydro-5,8-epoxy-2,3-benzodithiin 7 have been prepared by oxidation of the corresponding dithiols.Each of these compounds has been subjected to vapour phase pyrolysis in order to determine whether a retro Diels-Alder reaction occurs, leading to the formation of diatomic sulfur (S2) and a diene.Compounds 5 and 7 both appeared to decompose in this way; in each case the expected diene was detected in the pyrolysate together with sulfur (S8).Attempts to intercept S2 and thus to obtain direct evidence for its formation were not successful.The benzodithiin 6 underwent an analogous loss of sulfur on vapour phase pyrolysis, but only as a minor reaction pathway, and this decomposition pathway was not detectable in solution pyrolyses.Solution pyrolysis of 6 in the presence of N-phenylmaleinimide gave N-phenyl-2,3-naphthalimide 21 in low yield. cis-Cyclopentene-3,5-dithiol 9 has also been prepared but no evidence could be obtained for the formation of disulfide 4 on oxidation.Reaction of the dithiol 9 with aldehydes and ketones in the presence of acids led to the formation of adducts (such as 12 and 13 from acetone) which were rapidly interconverted in acidic media.
