14847-51-9Relevant articles and documents
Selectivity enhancement of aromatic halogenation reactions at the micellar interface: Effect of highly ionic media
Samant, Bhupesh S.,Bhagwat, Sunil S.
scheme or table, p. 1039 - 1044 (2012/10/18)
Halogenation (iodination and bromination) of various aromatic compounds has been studied in micellar media in order to observe the effect on regioselectivity and conversion of the reaction. The addition of surfactant causes a change in the chemical shifts of the aromatic proton resonance of phenol which proves the orientation of the aromatic compound on the micellar surface. However, increase in ionic strength of the reaction media affects the selectivity of reaction by disturbing this spatial orientation of the aromatic compound in the micelle. Selectivity towards particular isomers is dependent on the concentration of the surfactant. In bromination of chlorobenzene (deactivated aromatic compound) enhancement in selectivity and conversion towards the para isomer has been observed.
A practical highly selective oxybromination of phenols with dioxygen
Menini, Luciano,Parreira, Luciana A.,Gusevskaya, Elena V.
, p. 6401 - 6404 (2008/02/12)
A simple, low cost and highly selective method for the synthesis of mono-bromophenols from phenol and electron-rich phenolic compounds has been developed. Bromide ions are used as halogenating agents, dioxygen as a final oxidant, and Cu(OAc)2 as a catalyst.
Biphenyl sulfonamides as dual angiotensin endothelin receptor antagonists
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, (2008/06/13)
Novel biphenyl sulfonamide compounds which are combined angiotensin and endothelin receptor antagonists are claimed along with methods of using such compounds in the treatment of conditions such as hypertension and other diseases, as well as pharmaceutica