Tong Guo-tong
2009
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Journal
Chemistry World
Abstract
The 4-(N-methyl-N-substituted) aminobenzaldehydes were synthesized by the new Vilsmeier reaction of N-methyl-N-substituted aniline with DMF and BTC,and ethyl acetate was used as solvent.The yields of the title compounds were 85%~90% and the purity was more than 99%.The reaction conditions were optimized:mole ratio of N-methyl-N-substituted aniline∶DMF∶BTC=1∶1.2∶0.4,reaction temperature was 75~80℃,reaction time was 5 h.The structure of the products were characterized by IR and()~1H NMR spectroscopy.