A previously unknown direction of Rieche reaction has been found: formylation of mesitylene, m-xylene, and durene with dichloromethyl methyl ether in the presence of aluminium trichloride and, to lesser extent, of titanium tetrachloride give the respective benzylidene dichlorides besides aldehydes. A novel approach to the synthesis of sterically hindered aromatic dialdehydes has been offered which involves the transformation of a ...
[Chan, Yi-Tsu; Li, Xiaopeng; Soler, Monica; Wang, Jin-Liang; Wesdemiotis, Chrys; Newkome, George R. Journal of the American Chemical Society, 2009 , vol. 131, # 45 p. 16395 - 16397]