Formylation and dichloromethylation as alternative directions of rieche reaction. A novel to the synthesis of sterically hindered aromatic dialdhydes
作者:Alexander P. Yakubov、Dmitry V. Tsyganov、Leonid I. Belen'kii、Mikhail M. Krayushkin
DOI:10.1016/s0040-4020(01)90166-8
日期:1993.4
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
已经发现了Rieche反应的先前未知的方向:在三氯化铝存在下,用二氯甲基甲基醚将1,3,5-三甲基苯,间二甲苯和杜伦烯甲酰化,并且在较小程度上,在四氯化钛的存在下,除醛以外还得到各自的亚苄基二氯化物。已经提供了一种合成位阻芳族二醛的新方法,该方法包括将单醛转化成相应的亚苄基二氯化物,将后者的Rieche甲酰化,以及水解形成的二氯甲基醛。