694-90-6Relevant academic research and scientific papers
An efficient protocol for the synthesis of brominated norbornene, norbornadiene, and benzonorbornadiene
Essiz, Selcuk
, p. 319 - 322 (2019)
An efficient protocol for the synthesis of 2-bromonorbornene, 2-bromonorbornadiene, 2-bromoben- zonor-bornadiene, 2,3-dibromonorbornene, 2,3-dibromonorbornadiene, and 2,3-dibromobenzonorbornadiene in good yields has been developed. 1,2-Dibromotetrachloroethane is used as the brominating agent for these reactions. The results are discussed in comparison with alternative methods in the literature.
Palladium-catalyzed hydrophenylation of bicyclic alkenes
Mayo, Peter,Tam, William
, p. 9527 - 9540 (2007/10/03)
Palladium-catalyzed hydrophenylation reactions of bicyclic alkenes were investigated. These reactions were found to be completely chemo- and stereoselective, giving only exo products on the less substituted double bonds of bicyclic alkenes in moderate to good yields. For unsymmetrical bicyclic alkenes, regioselectivities of 52:48 to 100:0 were observed with various substituents on the bicyclic alkenes.
Trisannelated Benzenes by Cyclotrimerization of Bromostannylalkenes
Durr, Richard,Cossu, Sergio,Lucchini, Vittorio,Lucchi, OttorinoDe
, p. 2805 - 2807 (2007/10/03)
Keywords: aromaticity; C-C coupling; cyclotrimerizations; synthetic methods; tin
DEOXYGENATION OF ALDEHYDES AND KETONES; A NEW GENERAL REACTION OF DIBROMOCARBENE AND DIBROMOCARBONYL YLIDES
Huan, Zhenwei,Landgrebe, John A.,Peterson, Kimberly
, p. 2829 - 2832 (2007/10/02)
The treatment of a variety of aldehydes and ketones with phenyl(tribromomethyl)mercury results in the production of carbon monoxide from the deoxygenation of the carbonyl group by dibromocarbene.
Dibromocarbonyl Ylides. Deoxygenation of Aldehydes and Ketones by Dibromocarbene
Huan, Zhenwei,Landgrebe, John A.,Peterson, Kimberly
, p. 4519 - 4523 (2007/10/02)
The reaction of phenyl(tribromomethyl)mercury (4) with benzaldehyde-α-13C results in benzal-α-13C bromide and CO.The generality of this deoxygenation was shown by treatment of other aldehydes and ketones with mercurial 4 (1.8:1, benzene, 80 deg C, 4 h): , Ph (46), Et (35), i-Pr (39), t-Bu (19); Ph, Ph (6), Ph, Me (15), Me, Me (16), Et, n-Bu (19), Me, c-C3H5 (20), c-C3H5, c-C3H5 (20), cyclohexanone (38), cyclopentanone (19), norcamphor (46).Additional products in selected cases include (for acetophenone) α-bromostyrene, (for cyclohexanone) 1-bromocyclohexene and 1,1-dibromocyclohexane, (for norcamphor) 2,2-dibromonorbornane, 1,2-dibromonorbornane, 2-bromo-2-norbornene and 1-bromonorbornene, and (for pivaldehyde) 1,1-dibromo-2,2-dimethylpropane.The yields of CO from the treatment of a series of benzaldehydes with mercurial 4 (1.8:1 benzene, 80 deg C, 20 h) are given in parentheses: ArCHO (percent CO), 4-MeO (81), 4-Me (61), 3-Me (55), H (50), 4-F (46), 3-MeO (58), 4-Cl (46), 4-Br (47), 3-Cl (34), 3,4-Cl2 (27).A Hammett-type correlation of log (yield)/(yield)0 vs. ? gave ρ = -0.50 (r = 0.94).
