Download PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... A series of isochromans were oxidized and brominated by using 1.2 equiv of CuBr 2 in CH 3 CN at reflux to give the corresponding bromo benzaldehydes in moderate yields. A plausible mechanism for this transformation has been suggested. ... Strategies for the oxidation isochroman to ...